Here is a consolidate summary of all the rifle cartridges that are currently recognized by SAAMI. The purpose of this is to provide a quick glance of cartridge specs for the curious mind.
- The SAAMI Maximum Average Pressure (MAP) is listed in both the Copper Units of Pressure (CUP) and the Pounds per Square Inch (PSI).
- Some cartridges do not have either a PSI or CUP listed, and these values are omitted.
- Cartridges with +P Pressures, list both the standard and +P Pressure.
- The trim to length is equivalent to the minimum case length.
- COAL stands for Cartridge Overall Length, and is the measurement from case head to bullet tip.
- The source of this information is the SAAMI Manuel
- Last Updated 3-11-2021
6x45mm
MAP (PSI) – 55,000
Headspace – Shoulder @ .330
Headspace Dim – 1.4636 to 1.4736
Max Case Length – 1.760
Trim to Length – 1.730
COAL – 2.215 to 2.260
Head Diameter – .378
Bullet Diameter – .2435 to .2405
6mm Remington
MAP (CUP) – 52,000
MAP (PSI) – 65,000
Headspace – Shoulder @ .375
Headspace Dim – 1.7767 to 1.7867
Max Case Length – 2.233
Trim to Length – 2.213
COAL – 2.730 to 2.825
Head Diameter – .473
Bullet Diameter – .2435 to .2405
6mm Creedmoor
MAP (PSI) – 62,000
Headspace – Shoulder @ .400
Headspace Dim – 1.5410 to 1.5510
Max Case Length – 1.920
Trim to Length – 1.900
COAL – 2.550 to 2.800
Head Diameter – .472
Bullet Diameter – .2434 to .2404
6mm Advanced Rifle Cartridge (ARC)
MAP (PSI) – 52,000
Headspace – Shoulder @ .350
Headspace Dim – 1.1901 to 1.2001
Max Case Length – 1.490
Trim to Length – 1.470
COAL – 2.135 to 2.260
Head Diameter – .441
Bullet Diameter – .2433 to .2403
6mm GT
MAP (PSI) – 62,000
Headspace – Shoulder @ .375
Headspace Dim – 1.357 to 1.364
Max Case Length – 1.725
Trim to Length – 1.705
COAL – 2.515 to 2.640
Head Diameter – .471
Bullet Diameter – .2433 to .2403
6.5 Creedmoor
MAP (PSI) – 62,000
Headspace – Shoulder @ .400
Headspace Dim – 1.551 to 1.541
Max Case Length – 1.920
Trim to Length – 1.900
COAL – 2.700 to 2.825
Head Diameter – .473
Bullet Diameter – .2644 to .2614
6.5 Grendel
MAP (PSI) – 52,000
Headspace – Shoulder @ .350
Headspace Dim – 1.2301 to 1.2201
Max Case Length – 1.520
Trim to Length – 1.500
COAL – 2.135 to 2.260
Head Diameter – .441
Bullet Diameter – .2643 to .2613
6.5×55 Swedish
MAP (CUP) – 46,000
MAP (PSI) – 51,000
Headspace – Shoulder @ .365
Headspace Dim – 1.7834 to 1.7934
Max Case Length – 2.165
Trim to Length – 2.145
COAL – 3.150 to 2.750
Head Diameter – .4803
Bullet Diameter – .2642 to .2612
6.5×284 Norma
MAP (PSI) – 58,000
Headspace – Shoulder @ .3850
Headspace Dim – 1.8350 to 1.8450
Max Case Length – 1.2170
Trim to Length – 1.2.150
COAL – 2.874 to 3.228
Head Diameter – .4728
Bullet Diameter – .2642 to .2612
6.5-300 Weatherby Magnum
MAP (PSI) – 65,000
Headspace – Belted
Headspace Dim – .219 to .211
Max Case Length – 2.825
Trim to Length – 2.805
COAL – 3.450 to 3.600
Head Diameter – .5315
Bullet Diameter – .2644 to .2613
6.5 Precision Rifle Cartridge (PRC)
MAP (PSI) – 65,000
Headspace – Shoulder @ .420
Headspace Dim – 1.6486 to 1.6586
Max Case Length – 2.030
Trim to Length – 2.010
COAL – 2.755 to 2.955
Head Diameter – .532
Bullet Diameter – .2644 to .2614
6.5 Weatherby Rebated Precision Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .400
Headspace Dim – 2.209 to 2.219
Max Case Length – 2.570
Trim to Length – 2.550
COAL – 3.200 to 3.340
Head Diameter – .473
Bullet Diameter – .2643 to .2613
6.8mm Remington SPC
MAP (PSI) – 55,000
Headspace – Shoulder @ .3600
Headspace Dim – 1.3560 to 1.3460
Max Case Length – 1.6864
Trim to Length – 1.6664
COAL – 2.000 to 2.260
Head Diameter – .422
Bullet Diameter – .2780 to .2750
6.8 Western
MAP (PSI) – 65,000
Headspace – Shoulder @ .445
Headspace Dim – 1.6460 to 1.6560
Max Case Length – 2.020
Trim to Length – 2.000
COAL – 2.755 to 2.955
Head Diameter – .535
Bullet Diameter – .2780 to .2750
6.8 True Velocity Composite
MAP (PSI) – 65,000
Headspace – Shoulder @ .392
Headspace Dim – 1.884 to 1.777
Max Case Length – 2.685
Trim to Length – N/A
COAL – 2.685 to 2.810
Head Diameter – .473
Bullet Diameter – .2780 to .2750
This is a Composite (Plastic) case and should be considered non-reloadable
7mm Mauser (7×57)
MAP (CUP) – 46,000
MAP (PSI) – 51,000
Headspace – Shoulder @ .375
Headspace Dim – 1.8047 to 1.7947
Max Case Length – 2.235
Trim to Length – 2.215
COAL – 3.065 to 2.850
Head Diameter – .473
Bullet Diameter – .2845 to .2815
7mm Remington Magnum
MAP (CUP) – 52,000
MAP (PSI) – 61,000
Headspace – Belted
Headspace Dim – .220 to .227
Max Case Length – 2.500
Trim to Length – 2.480
COAL – 3.290 to 3.150
Head Diameter – .532
Bullet Diameter – .2845 to .2815
7mm Remington Short Action Ultra Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .4600
Headspace Dim – 1.5990 to 1.6090
Max Case Length – 2.035
Trim to Length – 2.015
COAL – 2.450 to 2.825
Head Diameter – .534
Bullet Diameter – .2845 to .2815
7mm Remington Ultra Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .420
Headspace Dim – 2.4742 to 2.4842
Max Case Length – 2.850
Trim to Length – 2.830
COAL – 3.450 to 3.600
Head Diameter – .534
Bullet Diameter – .2845 to .2815
7mm Shooting Times Westerner
MAP (CUP) – 53,000
MAP (PSI) – 65,000
Headspace – Belted
Headspace Dim – .220 to .227
Max Case Length – 2.850
Trim to Length – 2.830
COAL – 3.450 to 3.600
Head Diameter – .532
Bullet Diameter – .2845 to .2815
7mm Weatherby Magnum
MAP (PSI) – 65,000
Headspace – Belted
Headspace Dim – .220 to .224
Max Case Length – 2.549
Trim to Length – 2.537
COAL – 3.100 to 3.360
Head Diameter – .5315
Bullet Diameter – .2843 to .2813
7mm Winchester Short Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .4450
Headspace Dim – .1.7640 to 1.7740
Max Case Length – 2.100
Trim to Length – 2.080
COAL – 2.560 to 2.860
Head Diameter – .535
Bullet Diameter – .2845 to .2815
7mm-08 Remington
MAP (CUP) – 52,000
MAP (CUP) – 61,000
Headspace – Shoulder @ .400
Headspace Dim – .1.630 to 1.640
Max Case Length – 2.035
Trim to Length – 2.015
COAL – 2.530 to 2.800
Head Diameter – .473
Bullet Diameter – .2845 to .2815
7×64 Brenneke
MAP (CUP) – 50,500
Headspace – Shoulder @ .375
Headspace Dim – 2.1057 to 2.0957
Max Case Length – 2.5197
Trim to Length – 2.4997
COAL – 3.150 to 3.307
Head Diameter – .4705
Bullet Diameter – .2854 to .2825
7-30 Waters
MAP (CUP) – 40,000
MAP (PSI) – 45,000
Headspace – Rim
Headspace Dim – .063 to .070
Max Case Length – 2.040
Trim to Length – 2.020
COAL – 2.480 to 2.550
Head Diameter – .506
Bullet Diameter – .2845 to .2815
7.62x39mm
MAP (CUP) – 50,000
MAP (PSI) – 45,000
Headspace – Shoulder @ .3622
Headspace Dim – 1.252 to 1.262
Max Case Length – 1.528
Trim to Length – 1.513
COAL – 2.150 to 2.200
Head Diameter – .447
Bullet Diameter – .311 to .309
8mm Mauser (8×57)
MAP (CUP) – 37,000
MAP (PSI) – 35,000
Headspace – Shoulder @ .392
Headspace Dim – 1.8743 to 1.8843
Max Case Length – 2.240
Trim to Length – 2.220
COAL – 2.815 to 3.250
Head Diameter – .476
Bullet Diameter – .323 to .320
8mm Remington Magnum
MAP (CUP) – 54,000
MAP (PSI) – 65,000
Headspace – Belt
Headspace Dim – .220 to .227
Max Case Length – 2.850
Trim to Length – 2.830
COAL – 3.450 to 3.600
Head Diameter – .535
Bullet Diameter – .3235 to .3205
9.3x62mm
MAP (PSI) -57,500
Headspace – Shoulder @ .420
Headspace Dim – .2.0880 to 2.0980
Max Case Length – 2.453
Trim to Length – 2.433
COAL – 3.291
Head Diameter – .470
Bullet Diameter – .366 to .363
17 Hornet
MAP (PSI) – 50,000
Headspace – Rim
Headspace Dim – .065 to .072
Max Case Length – 1.3500
Trim to Length – 1.3300
COAL – 1.595 to 1.720
Head Diameter – .2989
Bullet Diameter – .1725 to .1695
17 Remington
MAP (CUP) – 52,000
MAP (PSI) – 63,000
Headspace – Shoulder @ .330
Headspace Dim – 1.3785 to 1.3885
Max Case Length – 1.796
Trim to Length – 1.776
COAL – 2.090 to 2.150
Head Diameter – .378
Bullet Diameter – .1725 to .1695
17 Remington Fireball
MAP (PSI) – 55,000
Headspace – Shoulder @ .300
Headspace Dim – 1.1275 to 1.1175
Max Case Length – 1.410
Trim to Length – 1.390
COAL – 1.660 to 1.830
Head Diameter – .332
Bullet Diameter – .1725 to .1695
204 Ruger
MAP (PSI) – 57,500
Headspace – Shoulder @ .330
Headspace Dim – 1.5613 to 1.5713
Max Case Length – 1.850
Trim to Length – 1.830
COAL – 2.125 to 2.260
Head Diameter – .332
Bullet Diameter – .2045 to .2015
218 Bee
MAP (CUP) – 40,000
Headspace – Rim
Headspace Dim – .065 to .072
Max Case Length – 1.345
Trim to Length – 1.325
COAL – 1.680 to 1.645
Head Diameter – .408
Bullet Diameter – .2245 to .2215
20 Nosler
MAP (PSI) – 55,000psi
Headspace – Shoulder @.330
Headspace Dim – 1.5350 to 1.5450
Max Case Length – 1.850
Trim to Length – 1.830
COAL – 2.135 to 2.260
Head Diameter – .378
Bullet Diameter – .2045 to .2015
22 Hornet
MAP (CUP) – 43,000
MAP (PSI) – 49,000
Headspace – Rim
Headspace Dim – .065 to .072
Max Case Length – 1.403
Trim to Length – 1.383
COAL – 1.660 to 1.723
Head Diameter – .350
Bullet Diameter – .2245 to .2215
22-250 Remington
MAP (CUP) -53,000
MAP (PSI) – 65,000
Headspace – Shoulder @ .347
Headspace Dim – 1.5849 to 1.5749
Max Case Length – 1.912
Trim to Length – 1.892
COAL – 2.290 to 2.350
Head Diameter – .473
Bullet Diameter – .2245 to .2215
220 Swift
MAP (CUP) – 54,000
MAP (PSI) – 62,000
Headspace – Shoulder @ .335
Headspace Dim – 1.816 to 1.806
Max Case Length – 2.205
Trim to Length – 2.185
COAL – 2.650 to 2.680
Head Diameter – .473
Bullet Diameter – .2245 to .2215
221 Remington Fireball
MAP (CUP) – 52,000
Headspace – Shoulder @ .330
Headspace Dim – 1.1138 to 1.1038
Max Case Length – 1.400
Trim to Length – 1.380
COAL – 1.780 to 1.830
Head Diameter – .378
Bullet Diameter – .2245 to .2215
222 Remington
MAP (CUP) – 46,000
MAP (PSI) – 50,000
Headspace – Shoulder @ .330
Headspace Dim – 1.3036 to 1.2936
Max Case Length – 1.700
Trim to Length – 1.680
COAL – 2.040 to 2.130
Head Diameter – .378
Bullet Diameter – .2245 to .2215
222 Remington Magnum
MAP (CUP) – 50,000
MAP (PSI) – 55,000
Headspace – Shoulder @ .330
Headspace Dim – 1.5025 to 1.4925
Max Case Length – 1.850
Trim to Length – 1.830
COAL – 2.220 to 2.280
Head Diameter – .378
Bullet Diameter – .2245 to .2215
223 Remington
MAP (CUP) – 52,000
MAP (PSI) – 55,000
Headspace – Shoulder @ .330
Headspace Dim – 1.4636 to 1.4736
Max Case Length – 1.760
Trim to Length – 1.730
COAL – 2.125 to 2.260
Head Diameter – .378
Bullet Diameter – .2245 to .2215
223 Winchester Super Short Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .4450
Headspace Dim – 1.2503 to 1.2403
Max Case Length – 1.670
Trim to Length – 1.650
COAL – 2.060 to 2.360
Head Diameter – .535
Bullet Diameter – .2245 to .2215
22 Nosler
MAP (PSI) – 55,000psi
Headspace – Shoulder @.330
Headspace Dim – 1.460 to 1.450
Max Case Length – 1.760
Trim to Length – 1.740
COAL – 2.135 to 2.260
Head Diameter – .378
Bullet Diameter – .2245 to .2215
224 Valkyrie
MAP (PSI) – 55,000psi
Headspace – Shoulder @.340
Headspace Dim – 1.2550 to 1.2650
Max Case Length – 1.600
Trim to Length – 1.580
COAL – 2.000 to 2.260
Head Diameter – .422
Bullet Diameter – .2245 to .2215
225 Winchester
MAP (CUP) – 50,000
Headspace – Shoulder @ .350
Headspace Dim – 1.5960 to 1.5860
Max Case Length – 1.930
Trim to Length – 1.910
COAL – 2.420 to 2.500
Head Diameter – .473
Bullet Diameter – .2245 to .2215
243 Winchester
MAP (CUP) – 52,000
MAP (PSI) – 60,000
Headspace – Shoulder @ .400
Headspace Dim – 1.640 to 1.630
Max Case Length – 2.045
Trim to Length – 2.025
COAL – 2.540 to 2.710
Head Diameter – .473
Bullet Diameter – .2430 to .2400
243 Winchester Super Short Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .4450
Headspace Dim – 1.250 to 1.240
Max Case Length – 1.670
Trim to Length – 1.650
COAL – 2.060 to 2.360
Head Diameter – .535
Bullet Diameter – .2430 to .2400
24 Nosler
MAP (PSI) – 55,000psi
Headspace – Shoulder @.330
Headspace Dim – 1.2500 to 1.2600
Max Case Length – 1.600
Trim to Length – 1.580
COAL – 2.135 to 2.260
Head Diameter – .378
Bullet Diameter – .2435 to .2415
25 Winchester Super Short Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .4450
Headspace Dim – 1.250 to 1.240
Max Case Length – 1.670
Trim to Length – 1.650
COAL – 2.060 to 2.360
Head Diameter – .535
Bullet Diameter – .2575 to .2545
25-06 Remington
MAP (CUP) – 53,000
MAP (PSI) – 63,000
Headspace – Shoulder @ .375
Headspace Dim – 2.0587 to 2.0487
Max Case Length – 2.494
Trim to Length – 2.474
COAL – 3.010 to 3.250
Head Diameter – .473
Bullet Diameter – .2575 to .2545
25-20 Winchester
MAP (CUP) – 28,000
Headspace – Rim
Headspace Dim – .065 to .072
Max Case Length – 1.330
Trim to Length – 1.305
COAL – 1.530 to 1.592
Head Diameter – .408
Bullet Diameter – .2580 to .255
25-35 Winchester
MAP (CUP) – 37,000
Headspace – Rim
Headspace Dim – .063 to .070
Max Case Length – 2.043
Trim to Length – 2.018
COAL – 2.550 to 2.505
Head Diameter – .506
Bullet Diameter – .2580 to .255
250 Savage
MAP (CUP) – 45,000
Headspace – Shoulder @ .347
Headspace Dim – 1.5892 to 1.5792
Max Case Length – 1.912
Trim to Length – 1.892
COAL – 2.320 to 2.515
Head Diameter – .473
Bullet Diameter – .258 to .255
257 Roberts
MAP (CUP) – 45,000
MAP (PSI) – 54,000
MAP (CUP) +P – 50,000
MAP (PSI) + P- 58,000
Headspace – Shoulder @ .375
Headspace Dim – 1.8037 to 1.7937
Max Case Length – 2.233
Trim to Length – 2.213
COAL – 2.620 to 2.780
Head Diameter – .473
Bullet Diameter – .258 to .255
257 Weatherby Magnum
MAP (CUP) – 53,500
MAP (PSI) – 62,500
Headspace – Belt
Headspace Dim – .220 to .224
Max Case Length – 2.549
Trim to Length – 2.537
COAL – 3.049 to 3.209
Head Diameter – .5315
Bullet Diameter – .2573 to .2543
26 Nosler
MAP (PSI) – 65,000
Headspace – Shoulder @ .4200
Headspace Dim – 2.2390 to 2.2490
Max Case Length – 2.590
Trim to Length – 2.570
COAL – 3.160 to 3.340
Head Diameter – .534
Bullet Diameter – .2645 to .2615
260 Remington
MAP (PSI) – 60,000
Headspace – Shoulder @ .400
Headspace Dim – 2.239 to 2.2490
Max Case Length – 2.035
Trim to Length – 2.015
COAL – 2.530 to 2.800
Head Diameter – .473
Bullet Diameter – .2645 to .2615
264 Winchester Magnum
MAP (CUP) – 54,000
MAP (PSI) – 64,000
Headspace – Belted
Headspace Dim – .220 to .227
Max Case Length – 2.500
Trim to Length – 2.480
COAL – 2.710 to 2.690
Head Diameter – .532
Bullet Diameter – .265 to .262
27 Nosler
MAP (PSI) – 65,000
Headspace – Shoulder @ .4200
Headspace Dim – 2.1823 to 2.1923
Max Case Length – 2.590
Trim to Length – 2.570
COAL – 3.160 to 3.340
Head Diameter – .534
Bullet Diameter – .2780 to .2750
270 Weatherby Magnum
MAP (CUP) – 53,500
MAP (PSI) – 62,500
Headspace – Belted
Headspace Dim – .220 to .224
Max Case Length – 2.549
Trim to Length – 2.537
COAL – 3.157 to 3.295
Head Diameter – .5315
Bullet Diameter – .2773 to .2743
270 Winchester
MAP (CUP) -52,000
MAP (PSI) – 65,000
Headspace – Shoulder @ .375
Headspace Dim – 2.0587 to 2.0487
Max Case Length – 2.540
Trim to Length – 2.520
COAL – 3.065 to 3.340
Head Diameter – .473
Bullet Diameter – .2780 to .2750
270 Winchester Short Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .4450
Headspace Dim – 1.7260 to 1.7360
Max Case Length – 2.100
Trim to Length – 2.080
COAL – 2.560 to 2.860
Head Diameter – .535
Bullet Diameter – .2780 to .2750
277 SIG FURY
MAP (PSI) – 80,000
Headspace – Shoulder @ .400
Headspace Dim – 1.680 to 1.687
Max Case Length – 2.015
Trim to Length – 1.995
COAL – 2.700 to 2.825
Head Diameter – .472
Bullet Diameter – .2780 to .2750
P/V Standard Barrel Length – 16in
28 Nosler
MAP (PSI) – 65,000
Headspace – Shoulder @ .4200
Headspace Dim – 2.2390 to 2.2490
Max Case Length – 2.590
Trim to Length – 2.570
COAL – 3.160 to 3.340
Head Diameter – .534
Bullet Diameter – .2845 to .2815
280 Ackley Improved
MAP (PSI) – 65,000
Headspace – Shoulder @ .3750
Headspace Dim – 2.1400 to 2.1500
Max Case Length – 2.525
Trim to Length – 2.513
COAL – 3.136 to 3.330
Head Diameter – .472
Bullet Diameter – .2845 to .2815
280 Remington
MAP (CUP) – 50,000
MAP (PSI) – 60,000
Headspace – Shoulder @ .3750
Headspace Dim – 2.110 to 2.100
Max Case Length – 2.540
Trim to Length – 2.520
COAL – 3.150 to 3.330
Head Diameter – .473
Bullet Diameter – .2845 to .2815
284 Winchester
MAP (CUP) – 54,000
MAP (PSI) – 56,000
Headspace – Shoulder @ .420
Headspace Dim – 1.820 to 1.810
Max Case Length – 2.170
Trim to Length – 2.150
COAL – 2.765 to 2.800
Head Diameter – .473
Bullet Diameter – .2845 to .2815
30 Carbine
MAP (CUP) – 40,000
MAP (PSI) – 40,000
Headspace – Case Mouth
Headspace Dim – 1.290 to 1.300
Max Case Length – 1.290
Trim to Length – 1.280
COAL – 1.625 to 1.680
Head Diameter – .360
Bullet Diameter – .3090 to .3060
30 Nosler
MAP (PSI) – 65,000
Headspace – Shoulder @ .4200
Headspace Dim – 2.188 to 2.198
Max Case Length – 2.556
Trim to Length – 2.536
COAL – 3.160 to 3.340
Head Diameter – .534
Bullet Diameter – .3090 to .3060
30 Remington AR
MAP (PSI) – 55,000
Headspace – Shoulder @ .400
Headspace Dim – 1.1690 to 1.1590
Max Case Length – 1.530
Trim to Length – 1.510
COAL – 2.000 to 2.260
Head Diameter – .492
Bullet Diameter – .3090 to .3060
30 Thompson Center
MAP (PSI) – 62,000
Headspace – Shoulder @ .400
Headspace Dim – 1.5740 to 1.5640
Max Case Length – 1.920
Trim to Length – 1.900
COAL – 2.560 to 2.660
Head Diameter – .473
Bullet Diameter – .3090 to .3060
30-06 Springfield
MAP (CUP) – 50,000
MAP (PSI) – 60,000
Headspace – Shoulder @ .375
Headspace Dim – 2.0487 to 2.0587
Max Case Length – 2.494
Trim to Length – 2.474
COAL – 2.940 to 3.340
Head Diameter – .473
Bullet Diameter – .3090 to .3060
30-30 Winchester
MAP (CUP) – 38,000
MAP (PSI) – 42,000
Headspace – Rim
Headspace Dim – .063 to .070
Max Case Length – 2.0395
Trim to Length – 2.0195
COAL – 2.450 to 2.550
Head Diameter – .506
Bullet Diameter – .3090 to .3060
30-40 Krag
MAP (CUP) – 40,000
Headspace – Rim
Headspace Dim – .064 to .071
Max Case Length – 2.314
Trim to Length – 2.294
COAL – 2.965 to 3.089
Head Diameter – .545
Bullet Diameter – .3090 to .3060
300 AAC Blackout
MAP (PSI) – 55,000
Headspace – Shoulder @ .3512
Headspace Dim – 1.0889 to 2.0789
Max Case Length – 1.368
Trim to Length – 1.348
COAL – 1.780 to 2.260
Head Diameter – .332
Bullet Diameter – .3090 to .3060
P/V Standard Barrel Length – 16in
300 Holland & Holland Magnum
MAP (CUP) – 54,000
MAP (PSI) – 58,000
Headspace – Belted
Headspace Dim – .220 to .227
Max Case Length – 2.850
Trim to Length – 2.830
COAL – 3.420 to 3.600
Head Diameter – .532
Bullet Diameter – .3090 to .3060
300 Remington Short Action Ultra Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .4600
Headspace Dim – 1.5990 to 1.6090
Max Case Length – 2.015
Trim to Length – 1.0905
COAL – 2.450 to 2.825
Head Diameter – .534
Bullet Diameter – .3090 to .3060
300 Remington Ultra Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .420
Headspace Dim – 2.4742 to 2.4842
Max Case Length – 2.850
Trim to Length – 2.830
COAL – 3.450 to 3.600
Head Diameter – .534
Bullet Diameter – .3090 to .3060
300 Ruger Compact Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .420
Headspace Dim – 1.7217 to 1.7317
Max Case Length – 2.100
Trim to Length – 2.080
COAL – 2.715 to 2.840
Head Diameter – .532
Bullet Diameter – .3090 to .3060
300 Savage
MAP (CUP) – 46,000
MAP (PSI) – 47,000
Headspace – Shoulder @ .3968
Headspace Dim – 1.6117 to 1.6017
Max Case Length – 1.871
Trim to Length – 2.851
COAL – 2.495 to 2.600
Head Diameter – .473
Bullet Diameter – .3090 to .3060
300 Weatherby Magnum
MAP (PSI) – 65,000
Headspace – Belted
Headspace Dim – .220 to .224
Max Case Length – 2.825
Trim to Length – 2.813
COAL – 3.390 to 3.560
Head Diameter – .5315
Bullet Diameter – .3083 to .3053
300 Winchester Magnum
MAP (CUP) – 54,000
MAP (PSI) – 64,000
Headspace – Belted
Headspace Dim – .220 to .227
Max Case Length – 2.620
Trim to Length – 2.600
COAL – 3.215 to 3.340
Head Diameter – .532
Bullet Diameter – .3090 to .3060
300 Winchester Short Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .4450
Headspace Dim – 1.7260 to 1.7360
Max Case Length – 2.100
Trim to Length – 2.080
COAL – 2.560 to 2.860
Head Diameter – .535
Bullet Diameter – .3090 to .3060
300 Precision Rifle Cartridge (PRC)
MAP (PSI) – 65,000
Headspace – Shoulder @ .420
Headspace Dim – 2.2000 to 2.2100
Max Case Length – 2.580
Trim to Length – 2.540
COAL – 3.575 to 3.700
Head Diameter – .532
Bullet Diameter – .3084 to .3054
300 Ham’r
MAP (PSI) – 57,500
Headspace – Shoulder @ .3512
Headspace Dim – 1.3497 to 1.3597
Max Case Length – 1.603
Trim to Length – 1.588
COAL – 2.165 to 2.260
Head Diameter – .378
Bullet Diameter – .3090 to .3060
300 Norma Magnum
MAP (PSI) – 61,000
Headspace – Shoulder @ .4550
Headspace Dim – 2.0360 to 2.1360
Max Case Length – 2.492
Trim to Length – 2.472
COAL – 3.556 to 3.681
Head Diameter – .588
Bullet Diameter – .3083 to .3053
303 British
MAP (CUP) – 45,000
MAP (PSI) – 49,000
Headspace – Rim
Headspace Dim – .064 to .071
Max Case Length – 2.222
Trim to Length – 2.202
COAL – 2.915 to 3.075
Head Diameter – .550
Bullet Diameter – .3125 to .3095
307 Winchester
MAP (CUP) – 52,000
Headspace – Rim
Headspace Dim – .063 to .071
Max Case Length – 2.015
Trim to Length – 1.995
COAL – 2.530 to 2.560
Head Diameter – .506
Bullet Diameter – .3090 to .3060
308 Marlin Express
MAP (PSI) – 47,500
Headspace – Shoulder @ .400
Headspace Dim – 1.5377 to 1.5477
Max Case Length – 1.920
Trim to Length – 1.900
COAL – 2.450 to 2.600
Head Diameter – .506
Bullet Diameter – .3085 to .3055
308 Winchester
MAP (CUP) – 52,000
MAP (PSI) – 62,000
Headspace – Shoulder @ .400
Headspace Dim – 1.630 to 1.640
Max Case Length – 2.015
Trim to Length – 1.995
COAL – 2.490 to 2.810
Head Diameter – .473
Bullet Diameter – .3090 to .3060
32 Winchester Special
MAP (CUP) – 38,000
MAP (PSI) – 42,000
Headspace – Rim
Headspace Dim – .063 to .071
Max Case Length – 2.040
Trim to Length – 1.020
COAL – 2.480 to 2.565
Head Diameter – .506
Bullet Diameter – .3220 to .3190
32-20 Winchester
MAP (CUP) – 16,000
Headspace – Rim
Headspace Dim – .065 to .072
Max Case Length – 1.315
Trim to Length – 1.275
COAL – 1.540 to 1.592
Head Diameter – .408
Bullet Diameter – .3125 to .3095
325 Winchester Short Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .4450
Headspace Dim – 1.7260 to 1.7360
Max Case Length – 2.100
Trim to Length – 2.080
COAL – 2.560 to 2.860
Head Diameter – .535
Bullet Diameter – .3235 to .3205
338 Weatherby Rebated Precision Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .420
Headspace Dim – 2.198 to 2.191
Max Case Length – 2.550
Trim to Length – 2.530
COAL – 3.250 to 3.380
Head Diameter – .473
Bullet Diameter – .3383 to .3353
338 Norma Magnum
MAP (PSI) – 62,500
Headspace – Shoulder @ .4750
Headspace Dim – 2.0101 to 2.0200
Max Case Length – 2.492
Trim to Length – 2.472
COAL – 3.556 to 3.681
Head Diameter – .588
Bullet Diameter – .3386 to .3356
Note: English units for max headspace dimension on print is incorrect as of 3-11-2021
33 Nosler
MAP (PSI) – 65,000
Headspace – Shoulder @ .440
Headspace Dim – 2.076 to 2.086
Max Case Length – 2.460
Trim to Length – 2.440
COAL – 3.160 to 3.340
Head Diameter – .534
Bullet Diameter – .3390 to .3360
338 Federal
MAP (PSI) – 62,000
Headspace – Shoulder @ .420
Headspace Dim – 1.6025 to 1.6125
Max Case Length – 2.015
Trim to Length – 1.995
COAL – 2.490 to 2.820
Head Diameter – .473
Bullet Diameter – .3390 to .3360
338 Lapua Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .476
Headspace Dim – 2.2530 to 2.2630
Max Case Length – 2.7244
Trim to Length – 2.7044
COAL – 3.6811 to 3.5611
Head Diameter – .5878
Bullet Diameter – .3390 to .3360
338 Marlin Express
MAP (PSI) – 46,000
Headspace – Shoulder @ .420
Headspace Dim – 1.5351 to 1.4541
Max Case Length – 1.890
Trim to Length – 1.870
COAL – 2.450 to 2.600
Head Diameter – .553
Bullet Diameter – .3385 to .3355
338 Remington Ultra Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .4600
Headspace Dim – 2.3490 to 2.3590
Max Case Length – 2.760
Trim to Length – 2.740
COAL – 3.450 to 3.600
Head Diameter – .534
Bullet Diameter – .3383 to .3353
338 Ruger Compact Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @ .450
Headspace Dim – 1.6227 to 1.6327
Max Case Length – 2.015
Trim to Length – 1.9915
COAL – 2.715 to 2.840
Head Diameter – .532
Bullet Diameter – .339 to .336
338 Winchester Magnum
MAP (CUP) – 54,000
MAP (PSI) – 64,000
Headspace – Belted
Headspace Dim – .220 to .227
Max Case Length – 2.500
Trim to Length – 2.480
COAL – 3.215 to 3.340
Head Diameter – .532
Bullet Diameter – .3390 to .3360
340 Weatherby Magnum
MAP (CUP) – 53,500
MAP (PSI) – 62,500
Headspace – Belted
Headspace Dim – .220 to .224
Max Case Length – 2.825
Trim to Length – 2.813
COAL – 3.585 to 3.700
Head Diameter – .534
Bullet Diameter – .3383 to .3353
348 Winchester
MAP (CUP) – 40,000
Headspace – RIm
Headspace Dim – .070 to .077
Max Case Length – 2.255
Trim to Length – 2.235
COAL – 3.585 to 3.700
Head Diameter – .610
Bullet Diameter – .3495 to .3465
350 Legend
MAP (PSI) – 55,000
Headspace – Case Mouth
Headspace Dim – 1.710 to 1.720
Max Case Length – 1.710
Trim to Length – 1.700
COAL – 2.125 to 2.260
Head Diameter – .378
Bullet Diameter – .3570 to .3540
P/V Standard Barrel Length – 16in
35 Nosler
MAP (PSI) – 65,000
Headspace – Shoulder @ .450
Headspace Dim – 2.081 to 2.091
Max Case Length – 2.490
Trim to Length – 2.470
COAL – 3.160 to 3.340
Head Diameter – .534
Bullet Diameter – .359 to .356
35 Remington
MAP (CUP) – 35,000
MAP (PSI) – 33,500
Headspace – Shoulder @ .405
Headspace Dim – 1.5681 to 1.5581
Max Case Length – 1.920
Trim to Length – 1.900
COAL – 2.460 to 2.525
Head Diameter – .460
Bullet Diameter – .359 to .356
35 Whelen
MAP (CUP) – 52,000
MAP (PSI) – 62,000
Headspace – Shoulder @ .415
Headspace Dim – 1.9835 to 1.9935
Max Case Length – 2.494
Trim to Length – 2.474
COAL – 2.970 to 3.340
Head Diameter – .473
Bullet Diameter – .359 to .356
350 Remington Magnum
MAP (CUP) – 53,000
Headspace – Belted
Headspace Dim – .220 to .227
Max Case Length – 2.170
Trim to Length – 2.150
COAL – 2.730 to 2.800
Head Diameter – .532
Bullet Diameter – .3590 to .3560
356 Winchester
MAP (CUP) – 52,000
Headspace – RIm
Headspace Dim – .063 to .070
Max Case Length – 2.015
Trim to Length – 1.995
COAL – 2.530 to 2.560
Head Diameter – .506
Bullet Diameter – .3585 to .3555
358 Winchester
MAP (CUP) – 52,000
Headspace – Shoulder @ .420
Headspace Dim – 1.6125 to 1.6025
Max Case Length – 2.015
Trim to Length – 1.995
COAL – 2.730 to 2.780
Head Diameter – .473
Bullet Diameter – .3585 to .3555
36 Nosler
MAP (PSI) – 65,000
Headspace – Shoulder @ .450
Headspace Dim – 2.198 to 2.208
Max Case Length – 2.570
Trim to Length – 2.550
COAL – 3.160 to 3.340
Head Diameter – .534
Bullet Diameter – .3660 to .3630
370 Sako Magnum
MAP (PSI) – 60,000
Headspace – Shoulder @ .420
Headspace Dim – 2.2450 to 2.2550
Max Case Length – 2.600
Trim to Length – 2.580
COAL – 3.346 to 3.221
Head Diameter – .534
Bullet Diameter – .3660 to .3630
375 Holland & Holland Magnum
MAP (CUP) – 53,000
MAP (PSI) – 62,000
Headspace – Belted
Headspace Dim – .220 to .227
Max Case Length – 2.850
Trim to Length – 2.830
COAL – 3.475 to 3.600
Head Diameter – .532
Bullet Diameter – .3760 to .3730
375 Remington Ultra Magnum
MAP (PSI) – 65,000
Headspace – Shoulder @.465
Headspace Dim – 2.4352 to 2.4452
Max Case Length – 2.850
Trim to Length – 2.830
COAL – 3.540 to 3.600
Head Diameter – .534
Bullet Diameter – .3760 to .3730
375 Ruger
MAP (PSI) – 62,000
Headspace – Shoulder @.465
Headspace Dim – 2.2191 to 2.2291
Max Case Length – 2.580
Trim to Length – 2.560
COAL – 3.280 to 3.340
Head Diameter – .532
Bullet Diameter – .3760 to .3730
375 Winchester
MAP (CUP) – 52,000
Headspace – Rim
Headspace Dim – .063 to .070
Max Case Length – 2.020
Trim to Length – 2.000
COAL – 2.530 to 2.560
Head Diameter – .506
Bullet Diameter – .3760 to .3730
376 Steyr
MAP (PSI) – 62,000
Headspace – Shoulder @.445
Headspace Dim – 1.940 to 1.950
Max Case Length – 2.362
Trim to Length – 2.342
COAL – 3.050 to 3.110
Head Diameter – .496
Bullet Diameter – .3760 to .3730
38-40 Winchester
MAP (CUP) – 14,000
Headspace – Rim
Headspace Dim – .065 to .072
Max Case Length – 1.305
Trim to Length – 1.2885
COAL – 1.560 to 1.592
Head Diameter – .525
Bullet Diameter – .4005 to .3975
38-55 Winchester
MAP (CUP) – 30,000
Headspace – Rim
Headspace Dim – .063 to .070
Max Case Length – 2.085
Trim to Length – 2.065
COAL – 2.510 to 2.470
Head Diameter – .516
Bullet Diameter – .3770 to .3740
405 Winchester
MAP (PSI) – 46,000
Headspace – Rim
Headspace Dim – .080 to .073
Max Case Length – 2.583
Trim to Length – 2.563
COAL – 3.175 to 3.115
Head Diameter – .4617
Bullet Diameter – .4115 to .4095
416 Remington Magnum
MAP (CUP) – 54,000
MAP (PSI) – 65,000
Headspace – Belted
Headspace Dim – .220 to .227
Max Case Length – 2.850
Trim to Length – 2.830
COAL – 3.350 to 3.600
Head Diameter – .535
Bullet Diameter – .416 to .413
416 Rigby
MAP (PSI) – 52,000
Headspace – Shoulder @.448
Headspace Dim – 2.3738 to 2.3838
Max Case Length – 2.900
Trim to Length – 2.880
COAL – 3.360 to 3.750
Head Diameter – .5902
Bullet Diameter – .4165 to .4135
416 Ruger
MAP (PSI) – 62,000
Headspace – Shoulder @.490
Headspace Dim – 2.1974 to 2.2074
Max Case Length – 2.580
Trim to Length – 2.560
COAL – 3.215 to 3.340
Head Diameter – .532
Bullet Diameter – .4165 to .4135
416 Weatherby Magnum
MAP (CUP) – 53,500
Headspace – Belted
Headspace Dim – .253 to .257
Max Case Length – 2.913
Trim to Length – 2.901
COAL – 3.650 to 3.750
Head Diameter – .535
Bullet Diameter – .416 to .413
44 Remington Magnum
MAP (CUP) – 40,000
MAP (PSI) – 36,000
Headspace – Rim
Headspace Dim – .060 to .070
Max Case Length – 1.285
Trim to Length – 1.265
COAL – 1.535 to 1.610
Head Diameter – .514
Bullet Diameter – .4320 to .4290
44-40 Winchester
MAP (CUP) – 13,000
MAP (PSI) – 11,000
Headspace – Rim
Headspace Dim – .065 to .072
Max Case Length – 1.305
Trim to Length – 1.285
COAL – 1.592 to 1.540
Head Diameter – .525
Bullet Diameter – .427 to .424
444 Marlin
MAP (CUP) – 44,000
MAP (PSI) – 42,000
Headspace – Rim
Headspace Dim – .063 to .070
Max Case Length – 2.225
Trim to Length – 2.2195
COAL – 2.500 to 2.570
Head Diameter – .514
Bullet Diameter – .4305 to .4275
45-70 Government
MAP (CUP) – 28,000
MAP (PSI) – 28,000
Headspace – Rim
Headspace Dim – .070 to .077
Max Case Length – 2.105
Trim to Length – 2.085
COAL – 2.490 to 2.550
Head Diameter – .608
Bullet Diameter – .4580 to .4550
450 Bushmaster
MAP (PSI) – 38,500
Headspace – Case Mouth
Headspace Dim – 1.710 to 1.700
Max Case Length – 1.700
Trim to Length – 1.690
COAL – 2.000 to 2.260
Head Diameter – .473
Bullet Diameter – .4525 to .4495
450 Marlin
MAP (PSI) – 43,500
Headspace – Belted
Headspace Dim – .252 to .259
Max Case Length – 2.100
Trim to Length – 2.080
COAL – 2.490 to 2.550
Head Diameter – .512
Bullet Diameter – .4583 to .4553
457 Wild West Guns
MAP (PSI) – 43,500
Headspace – Rim
Headspace Dim – .070 to .077
Max Case Length – 2.210
Trim to Length – 2.190
COAL – 2.490 to 2.665
Head Diameter – .608
Bullet Diameter – .4580 to .4550
458 Lott
MAP (PSI) – 62,500
Headspace – Belted
Headspace Dim – .220 to .227
Max Case Length – 2.800
Trim to Length – 2.780
COAL – 3.400 to 3.600
Head Diameter – .534
Bullet Diameter – .459 to .456
458 Winchester Magnum
MAP (CUP) – 53,000
MAP (PSI) – 60,000
Headspace – Belted
Headspace Dim – .220 to .227
Max Case Length – 2.500
Trim to Length – 2.480
COAL – 3.280 to 3.340
Head Diameter – .532
Bullet Diameter – .459 to .456
470 Nitro Express
MAP (CUP) – 35,000
MAP (PSI) – 41,000
Headspace – Rim
Headspace Dim – .040 to .047
Max Case Length – 3.2500
Trim to Length – 3.2300
COAL – 3.850 to 3.980
Head Diameter – .6551
Bullet Diameter – .4744 to .4714
475 Turnbull
MAP (PSI) – 42,000
Headspace – Rim
Headspace Dim – .070 to .077
Max Case Length – 2.205
Trim to Length – 2.1855
COAL – 2.650 to 2.780
Head Diameter – .610
Bullet Diameter – .4755 to .4714
500 Nitro Express 3″
MAP (PSI) – 38,500
Headspace – Rim
Headspace Dim – .0409 to .0470
Max Case Length – 3.000
Trim to Length – 2.980
COAL – 3.500 to 3.750
Head Diameter – .6551
Bullet Diameter – .512 to .509