Load Specifications
Bullet Manufacturer:Cutting Edge
Bullet Weight:175 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Caliber:.378 Weath. Mag. load data
Case Length (l3):2.913"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:137 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:63,817 psi
Load data in caliber .378 Weath. Mag. with .375 | 175gr | CutEdge Maximus bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and ReloadSwiss RS 52.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 57,450 psi | 90% | 3392 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,840 psi | 88% | 3412 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,898 psi | 88% | 3402 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,476 psi | 85% | 3425 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,999 psi | 88% | 3392 fps | 95.9% |
| Accurate 4064 | <<locked>> | 92% | 55,999 psi | 88% | 3455 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 56,855 psi | 89% | 3543 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 88% | 56,942 psi | 89% | 3501 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 92% | 54,592 psi | 86% | 3432 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,782 psi | 87% | 3445 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,608 psi | 89% | 3425 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 57,624 psi | 90% | 3579 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 57,130 psi | 90% | 3632 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,476 psi | 85% | 3458 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,811 psi | 89% | 3402 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 55,027 psi | 86% | 3484 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,302 psi | 85% | 3547 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,941 psi | 88% | 3596 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,537 psi | 60% | 3202 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,555 psi | 68% | 3386 fps | 96.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 57,232 psi | 90% | 3510 fps | 99.3% |
| Bofors RP3 | <<locked>> | 92% | 55,056 psi | 86% | 3471 fps | 99.9% |
| Bofors RP7 | <<locked>> | 96% | 55,303 psi | 87% | 3428 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,522 psi | 90% | 3428 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,477 psi | 87% | 3471 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,551 psi | 90% | 3589 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 82% | 56,405 psi | 88% | 3448 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,740 psi | 90% | 3471 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 56,304 psi | 88% | 3488 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 98% | 56,115 psi | 88% | 3533 fps | 97% |
| Hodgdon H4895 | <<locked>> | 88% | 57,508 psi | 90% | 3514 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,502 psi | 79% | 3399 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 57,348 psi | 90% | 3547 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 57,638 psi | 90% | 3576 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,027 psi | 55% | 2192 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,230 psi | 87% | 3455 fps | 99.8% |
| IMR 3031 | <<locked>> | 88% | 57,334 psi | 90% | 3501 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,537 psi | 90% | 3478 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,624 psi | 90% | 3448 fps | 97.1% |
| IMR 4198 | <<locked>> | 82% | 56,724 psi | 89% | 3360 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,811 psi | 87% | 3455 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 96% | 57,522 psi | 90% | 3474 fps | 97% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,534 psi | 84% | 3465 fps | 98.9% |
| IMR 4895 | <<locked>> | 90% | 56,449 psi | 88% | 3520 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 86% | 55,782 psi | 87% | 3445 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,869 psi | 88% | 3422 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,724 psi | 89% | 3468 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,376 psi | 88% | 3415 fps | 99.7% |
| Lovex S062 | <<locked>> | 92% | 57,116 psi | 90% | 3471 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,507 psi | 89% | 3458 fps | 98.2% |
| Lovex S070 | <<locked>> | 98% | 54,128 psi | 85% | 3432 fps | 96.7% |
| Norma 201 | <<locked>> | 88% | 55,288 psi | 87% | 3435 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,086 psi | 88% | 3442 fps | 100% |
| Norma 203B | <<locked>> | 90% | 54,215 psi | 85% | 3468 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 55,753 psi | 87% | 3527 fps | 99% |
| Ramshot Big Game | <<locked>> | 90% | 55,071 psi | 86% | 3491 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,839 psi | 86% | 3517 fps | 97.6% |
| Ramshot TAC | <<locked>> | 86% | 56,521 psi | 89% | 3458 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 56,028 psi | 88% | 3478 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,956 psi | 89% | 3442 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,447 psi | 56% | 2244 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,114 psi | 86% | 3425 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,594 psi | 89% | 3461 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,521 psi | 87% | 3560 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 55,477 psi | 87% | 3596 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3563 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 56,710 psi | 89% | 3596 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 55,854 psi | 88% | 3419 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,767 psi | 87% | 3432 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,897 psi | 86% | 3461 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 96% | 55,303 psi | 87% | 3428 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,507 psi | 89% | 3458 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,724 psi | 89% | 3468 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 57,116 psi | 90% | 3471 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 54,128 psi | 85% | 3432 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 57,116 psi | 90% | 3533 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,694 psi | 86% | 3425 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,463 psi | 87% | 3458 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,029 psi | 89% | 3376 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,464 psi | 90% | 3363 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 57,363 psi | 90% | 3406 fps | 97.1% |
| Somchem S321 | <<locked>> | 84% | 57,421 psi | 90% | 3484 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,260 psi | 88% | 3363 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,462 psi | 85% | 3419 fps | 99.5% |
| Somchem S355 | <<locked>> | 94% | 55,245 psi | 87% | 3461 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,966 psi | 78% | 3461 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 56,565 psi | 89% | 3337 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,261 psi | 90% | 3360 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,564 psi | 87% | 3396 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,811 psi | 89% | 3415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 57,072 psi | 89% | 3442 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 54,665 psi | 86% | 3461 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 86% | 56,376 psi | 88% | 3445 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 55,085 psi | 86% | 3406 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 3527 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,177 psi | 66% | 3294 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,535 psi | 87% | 3435 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 56,507 psi | 89% | 3497 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 56,260 psi | 88% | 3537 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 88% | 55,361 psi | 87% | 3468 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 47,340 psi | 74% | 3225 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,141 psi | 82% | 3350 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,639 psi | 62% | 3110 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,239 psi | 74% | 3294 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,185 psi | 82% | 3323 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 37,463 psi | 59% | 3087 fps | 99.5% |
| Accurate 4350 | <<locked>> | 90% | 39,407 psi | 62% | 3189 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 43,729 psi | 69% | 3235 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 37,130 psi | 58% | 3051 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,861 psi | 72% | 3258 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 45,992 psi | 72% | 3255 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,708 psi | 84% | 3507 fps | 99.7% |
| Alliant Power Pro 2000-MR | 99.4 gr | 80% | 39,885 psi | 63% | 3251 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,593 psi | 57% | 3071 fps | 96.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,330 psi | 84% | 3346 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,407 psi | 62% | 3150 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 39,334 psi | 62% | 3205 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 82% | 33,953 psi | 53% | 3081 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 33,895 psi | 53% | 3064 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 40,408 psi | 63% | 3301 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,178 psi | 68% | 3232 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 36,100 psi | 57% | 3068 fps | 96.9% |
| Bofors RP7 | <<locked>> | 94% | 51,793 psi | 81% | 3363 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,645 psi | 75% | 3251 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,802 psi | 70% | 3271 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,647 psi | 78% | 3442 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 80% | 52,576 psi | 82% | 3383 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,824 psi | 84% | 3406 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 39,798 psi | 62% | 3140 fps | 95% |
| Hodgdon H414 | <<locked>> | 94% | 48,805 psi | 76% | 3392 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 44,106 psi | 69% | 3251 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 33,678 psi | 53% | 3009 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,292 psi | 63% | 3205 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 96% | 53,417 psi | 84% | 3501 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,918 psi | 41% | 1965 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,409 psi | 66% | 3196 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 43,714 psi | 69% | 3258 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,957 psi | 61% | 3094 fps | 96.2% |
| IMR 4166 Enduron | <<locked>> | 86% | 50,604 psi | 79% | 3320 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 53,417 psi | 84% | 3307 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 52,344 psi | 82% | 3389 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 50,546 psi | 79% | 3343 fps | 95.5% |
| IMR 4831 | <<locked>> | 90% | 37,985 psi | 60% | 3130 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 40,364 psi | 63% | 3186 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 45,861 psi | 72% | 3258 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 52,069 psi | 82% | 3360 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,801 psi | 67% | 3212 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 43,859 psi | 69% | 3173 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 38,740 psi | 61% | 3100 fps | 98% |
| Lovex S065 | <<locked>> | 90% | 43,845 psi | 69% | 3205 fps | 95.3% |
| Lovex S070 | <<locked>> | 94% | 47,514 psi | 74% | 3301 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 42,641 psi | 67% | 3182 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 43,091 psi | 68% | 3199 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 38,783 psi | 61% | 3136 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 39,682 psi | 62% | 3192 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 38,551 psi | 60% | 3143 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 94% | 44,541 psi | 70% | 3304 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 45,992 psi | 72% | 3251 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,455 psi | 71% | 3278 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,748 psi | 78% | 3310 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,266 psi | 41% | 2014 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,648 psi | 81% | 3363 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 46,325 psi | 73% | 3261 fps | 95.2% |
| ReloadSwiss RS 52 | 96.4 gr | 80% | 41,568 psi | 65% | 3271 fps | 96.8% |
| ReloadSwiss RS 60 | 97.9 gr | 80% | 33,779 psi | 53% | 3094 fps | 97.9% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 39,378 psi | 62% | 3205 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,511 psi | 67% | 3291 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 46,427 psi | 73% | 3248 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,538 psi | 64% | 3127 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 33,881 psi | 53% | 2999 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 94% | 51,793 psi | 81% | 3363 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 43,845 psi | 69% | 3205 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,801 psi | 67% | 3212 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 38,740 psi | 61% | 3100 fps | 98% |
| Shooters World SW4350 | <<locked>> | 94% | 47,514 psi | 74% | 3301 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,201 psi | 55% | 3061 fps | 95.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,135 psi | 69% | 3215 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,438 psi | 67% | 3199 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,179 psi | 69% | 3146 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,637 psi | 57% | 2976 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 50,038 psi | 78% | 3274 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 49,835 psi | 78% | 3346 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 43,729 psi | 69% | 3143 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,947 psi | 69% | 3215 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 34,809 psi | 55% | 3012 fps | 95.9% |
| Somchem S365 | <<locked>> | 86% | 30,777 psi | 48% | 2982 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 49,951 psi | 78% | 3232 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,527 psi | 70% | 3143 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,001 psi | 63% | 3117 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,785 psi | 64% | 3120 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 33,141 psi | 52% | 2940 fps | 96.8% |
| Vihtavuori N160 | <<locked>> | 88% | 38,812 psi | 61% | 3130 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 45,934 psi | 72% | 3251 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 39,407 psi | 62% | 3100 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 40,973 psi | 64% | 3196 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 96% | 36,637 psi | 57% | 3156 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 34,069 psi | 53% | 2969 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 45,774 psi | 72% | 3301 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 48,965 psi | 77% | 3396 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,872 psi | 66% | 3199 fps | 98.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 100 powders for .378 Weath. Mag. loaded with the .375 | 175gr | CutEdge Maximus. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,632 fps; across all powders the maximum-charge window runs from 2,192 fps to 3,632 fps. Accurate 4350 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .378 Weath. Mag. with the .375 | 175gr | CutEdge Maximus they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.