Load Specifications
Load data in caliber .378 Weath. Mag. with .375 | 210gr | Barnes X S bullet and 94 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 Reloder-16 and ReloadSwiss RS 70.
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 2495 | <<locked>> | 82% | 55,376 psi | 87% | 3094 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,114 psi | 86% | 3127 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,968 psi | 83% | 3173 fps | 98.8% |
| Accurate 4064 | <<locked>> | 84% | 55,332 psi | 87% | 3146 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,984 psi | 86% | 3238 fps | 99.8% |
| Accurate High Countryᴾ | <<locked>> | 100% | 56,840 psi | 89% | 3373 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 82% | 56,594 psi | 89% | 3212 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,537 psi | 90% | 3215 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,347 psi | 87% | 3258 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,565 psi | 89% | 3346 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,317 psi | 87% | 3258 fps | 97% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,317 psi | 87% | 3258 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,085 psi | 86% | 3189 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,317 psi | 87% | 3209 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,897 psi | 86% | 3287 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,260 psi | 88% | 3323 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,549 psi | 85% | 3248 fps | 96.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,967 psi | 81% | 3248 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,153 psi | 77% | 3189 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,352 psi | 68% | 3091 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,318 psi | 88% | 3399 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,333 psi | 88% | 3225 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 56,376 psi | 88% | 3212 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,967 psi | 81% | 3248 fps | 96.5% |
| Bofors RP7 | <<locked>> | 90% | 55,463 psi | 87% | 3176 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 86% | 56,536 psi | 89% | 3222 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 56,695 psi | 89% | 3284 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 56,478 psi | 89% | 3235 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 57,174 psi | 90% | 3225 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,332 psi | 87% | 3209 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,203 psi | 90% | 3261 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,826 psi | 89% | 3317 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,521 psi | 57% | 2021 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,505 psi | 85% | 3166 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,000 psi | 89% | 3196 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,347 psi | 88% | 3173 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 55,956 psi | 88% | 3205 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,710 psi | 89% | 3202 fps | 98.4% |
| IMR 4831 | <<locked>> | 94% | 55,143 psi | 86% | 3222 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 56,681 psi | 89% | 3241 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 57,464 psi | 90% | 3189 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,303 psi | 87% | 3130 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,725 psi | 90% | 3196 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,159 psi | 90% | 3205 fps | 99.4% |
| Lovex S070 | <<locked>> | 92% | 55,100 psi | 86% | 3192 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,512 psi | 70% | 3012 fps | 97.2% |
| Norma 201 | <<locked>> | 82% | 55,883 psi | 88% | 3159 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,173 psi | 88% | 3153 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,636 psi | 86% | 3196 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,710 psi | 89% | 3261 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 55,042 psi | 86% | 3340 fps | 98.5% |
| Norma URP | <<locked>> | 94% | 56,898 psi | 89% | 3274 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 55,042 psi | 86% | 3219 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,521 psi | 87% | 3268 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,173 psi | 58% | 2067 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,246 psi | 88% | 3196 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,985 psi | 88% | 3284 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,825 psi | 87% | 3320 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,505 psi | 85% | 3255 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,521 psi | 89% | 3340 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 56,507 psi | 89% | 3159 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,318 psi | 88% | 3202 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,188 psi | 90% | 3228 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 3294 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 55,463 psi | 87% | 3176 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,159 psi | 90% | 3205 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,464 psi | 90% | 3189 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,725 psi | 90% | 3196 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,100 psi | 86% | 3192 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,232 psi | 90% | 3258 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,013 psi | 86% | 3179 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,231 psi | 88% | 3081 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,855 psi | 89% | 3077 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,130 psi | 90% | 3153 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,029 psi | 89% | 3291 fps | 97.5% |
| Somchem S335 | <<locked>> | 82% | 56,202 psi | 88% | 3077 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,435 psi | 90% | 3196 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,115 psi | 88% | 3199 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 55,796 psi | 87% | 3278 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,056 psi | 86% | 3215 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 82% | 56,536 psi | 89% | 3061 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,478 psi | 89% | 3114 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,594 psi | 89% | 3127 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,334 psi | 90% | 3166 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,376 psi | 87% | 3209 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,517 psi | 79% | 3117 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 84% | 54,897 psi | 86% | 3123 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,752 psi | 86% | 3215 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,245 psi | 87% | 3281 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,056 psi | 86% | 3173 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,811 psi | 89% | 3284 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,817 psi | 70% | 3245 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,216 psi | 87% | 3189 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,882 psi | 86% | 3199 fps | 96.8% |
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 2495 | <<locked>> | 80% | 52,040 psi | 82% | 3045 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,631 psi | 76% | 3009 fps | 96.3% |
| Accurate 3100 | <<locked>> | 90% | 38,435 psi | 60% | 2877 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 49,124 psi | 77% | 3045 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,347 psi | 59% | 2881 fps | 96.9% |
| Accurate High Country | <<locked>> | 98% | 53,142 psi | 83% | 3307 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 53,272 psi | 83% | 3156 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,324 psi | 71% | 2992 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 48,979 psi | 77% | 3140 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,414 psi | 77% | 3215 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 48,921 psi | 77% | 3136 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 48,921 psi | 77% | 3136 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,948 psi | 72% | 3025 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,979 psi | 77% | 3097 fps | 99.6% |
| Alliant Reloder-16 | 89.6 gr | 80% | 35,969 psi | 56% | 2874 fps | 96.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,393 psi | 63% | 3012 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 48,312 psi | 76% | 3127 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 48,820 psi | 77% | 3186 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 28,863 psi | 45% | 2677 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 94% | 36,347 psi | 57% | 2907 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 86% | 35,012 psi | 55% | 2927 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,779 psi | 83% | 3166 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 46,586 psi | 73% | 3041 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 48,820 psi | 77% | 3186 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 43,700 psi | 68% | 2946 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 46,804 psi | 73% | 3041 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 41,263 psi | 65% | 2976 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 84% | 46,920 psi | 74% | 3054 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 53,824 psi | 84% | 3169 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,707 psi | 53% | 2769 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,256 psi | 79% | 3143 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 43,149 psi | 68% | 3045 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 43% | 1811 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,242 psi | 80% | 3110 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,659 psi | 75% | 3028 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,835 psi | 78% | 3051 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 43,990 psi | 69% | 2972 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,148 psi | 66% | 2917 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 35,752 psi | 56% | 2822 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 50,154 psi | 79% | 3130 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 53,867 psi | 84% | 3133 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,069 psi | 82% | 3074 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 48,283 psi | 76% | 3038 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,205 psi | 63% | 2871 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 40,944 psi | 64% | 2907 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 37,217 psi | 58% | 2851 fps | 95% |
| Norma 201 | <<locked>> | 80% | 52,576 psi | 82% | 3104 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,823 psi | 83% | 3100 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,370 psi | 76% | 3084 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 49,705 psi | 78% | 3133 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 42,322 psi | 66% | 3077 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 36,738 psi | 58% | 2867 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 48,327 psi | 76% | 3100 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 82% | 37,942 psi | 59% | 2900 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,876 psi | 44% | 1854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,673 psi | 73% | 3015 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,373 psi | 82% | 3219 fps | 99.8% |
| ReloadSwiss RS 60 | 96.5 gr | 80% | 42,772 psi | 67% | 3077 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,651 psi | 57% | 2887 fps | 96.3% |
| ReloadSwiss RS 70 | 98 gr | 80% | 35,723 psi | 56% | 2881 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 50,212 psi | 79% | 3051 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,034 psi | 69% | 2982 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 53,722 psi | 84% | 3169 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 94% | 47,485 psi | 74% | 3110 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 43,700 psi | 68% | 2946 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,205 psi | 63% | 2871 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,867 psi | 84% | 3133 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,283 psi | 76% | 3038 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 40,944 psi | 64% | 2907 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,411 psi | 70% | 3028 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,648 psi | 81% | 3120 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,939 psi | 83% | 3028 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,875 psi | 70% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,930 psi | 66% | 2864 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 47,036 psi | 74% | 3107 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 52,939 psi | 83% | 3031 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,780 psi | 84% | 3140 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,208 psi | 69% | 2979 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 33,417 psi | 52% | 2822 fps | 98.7% |
| Somchem S385 | <<locked>> | 92% | 45,600 psi | 71% | 3038 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 53,243 psi | 83% | 3012 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,067 psi | 78% | 3018 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,096 psi | 79% | 3025 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,163 psi | 66% | 2900 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 38,014 psi | 60% | 2861 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 96% | 44,527 psi | 70% | 2999 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 48,588 psi | 76% | 3018 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,724 psi | 59% | 2864 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 82% | 31,546 psi | 49% | 2766 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,304 psi | 58% | 2828 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 41,365 psi | 65% | 2976 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 86% | 29,138 psi | 46% | 2772 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,677 psi | 81% | 3130 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,051 psi | 75% | 3074 fps | 95.2% |
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 94 powders for .378 Weath. Mag. loaded with the .375 | 210gr | Barnes X S. Alliant Reloder-26 delivers the highest muzzle velocity at 3,399 fps; across all powders the maximum-charge window runs from 2,021 fps to 3,399 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 210.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Alliant Reloder-22 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 Reloder-16, ReloadSwiss RS 70 rank at the top here: for .378 Weath. Mag. with the .375 | 210gr | Barnes X S 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.