Load Specifications
Load data in caliber .375 H&H Mag. with .375 | 250gr | Sierra GameKing bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and Hodgdon LEVERevolution.
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.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 53,664 psi | 86% | 2621 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 55,535 psi | 89% | 2687 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 54,418 psi | 87% | 2677 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 53,388 psi | 86% | 2697 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 54,056 psi | 87% | 2717 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,122 psi | 74% | 2664 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 82% | 53,461 psi | 86% | 2569 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 53,853 psi | 86% | 2592 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 55,956 psi | 90% | 2749 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 96% | 53,476 psi | 86% | 2694 fps | 98.9% |
| ADI AR 2219 | <<locked>> | 82% | 53,925 psi | 86% | 2680 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,303 psi | 89% | 2710 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 90% | 55,027 psi | 88% | 2690 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 53,447 psi | 86% | 2759 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,448 psi | 89% | 2854 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 56,115 psi | 90% | 2766 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 53,548 psi | 86% | 2628 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 53,722 psi | 86% | 2736 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,079 psi | 74% | 2674 fps | 97.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,084 psi | 85% | 2822 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 55,898 psi | 90% | 2612 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 55,753 psi | 89% | 2762 fps | 98.9% |
| Bofors RP3 | <<locked>> | 96% | 52,968 psi | 85% | 2730 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,128 psi | 87% | 2648 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,056 psi | 87% | 2736 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 55,796 psi | 89% | 2828 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 86% | 56,028 psi | 90% | 2710 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 53,577 psi | 86% | 2687 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 54,534 psi | 87% | 2740 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 92% | 56,420 psi | 90% | 2762 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,206 psi | 68% | 2562 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 55,114 psi | 88% | 2789 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,635 psi | 56% | 1624 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,505 psi | 87% | 2717 fps | 99.6% |
| IMR 3031 | <<locked>> | 92% | 55,666 psi | 89% | 2749 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 56,289 psi | 90% | 2726 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 92% | 53,751 psi | 86% | 2657 fps | 95.8% |
| IMR 4198 | <<locked>> | 84% | 54,041 psi | 87% | 2592 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 55,956 psi | 90% | 2720 fps | 96.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,135 psi | 71% | 2612 fps | 96.9% |
| IMR 4895 | <<locked>> | 94% | 55,027 psi | 88% | 2769 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 90% | 55,303 psi | 89% | 2710 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 86% | 55,463 psi | 89% | 2697 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 55,187 psi | 88% | 2733 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,159 psi | 90% | 2684 fps | 99.5% |
| Lovex S062 | <<locked>> | 96% | 55,796 psi | 89% | 2726 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,488 psi | 83% | 2664 fps | 96.9% |
| Norma 201 | <<locked>> | 92% | 54,752 psi | 88% | 2700 fps | 99.9% |
| Norma 202 | <<locked>> | 92% | 55,143 psi | 88% | 2707 fps | 100% |
| Norma 203B | <<locked>> | 96% | 56,130 psi | 90% | 2776 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 46,035 psi | 74% | 2657 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 94% | 53,040 psi | 85% | 2749 fps | 99.2% |
| Ramshot TAC | <<locked>> | 90% | 55,883 psi | 90% | 2720 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 90% | 54,882 psi | 88% | 2740 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 86% | 53,272 psi | 85% | 2664 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,954 psi | 56% | 1663 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,042 psi | 88% | 2697 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,332 psi | 89% | 2720 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 53,316 psi | 85% | 2795 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 53,026 psi | 85% | 2828 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 45,919 psi | 74% | 2684 fps | 96.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,152 psi | 76% | 2700 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 90% | 55,753 psi | 89% | 2687 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,129 psi | 88% | 2697 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 56,144 psi | 90% | 2766 fps | 99.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,488 psi | 83% | 2664 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,187 psi | 88% | 2733 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 55,796 psi | 89% | 2726 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,042 psi | 88% | 2667 fps | 99.8% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,128 psi | 87% | 2690 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 54,607 psi | 88% | 2776 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,389 psi | 87% | 2644 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 53,809 psi | 86% | 2697 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 54,273 psi | 87% | 2720 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 53,505 psi | 86% | 2605 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,362 psi | 90% | 2641 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 52,953 psi | 85% | 2694 fps | 99.9% |
| Somchem S335 | <<locked>> | 92% | 55,898 psi | 90% | 2648 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 53,214 psi | 85% | 2690 fps | 99.2% |
| Somchem S355 | <<locked>> | 98% | 53,417 psi | 86% | 2720 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,147 psi | 66% | 2612 fps | 99% |
| Vihtavuori N130 | <<locked>> | 86% | 53,447 psi | 86% | 2579 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 53,461 psi | 86% | 2595 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,070 psi | 87% | 2667 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,651 psi | 89% | 2687 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 54,853 psi | 88% | 2700 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,660 psi | 78% | 2661 fps | 97.5% |
| Vihtavuori N530 | <<locked>> | 90% | 55,840 psi | 90% | 2710 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 53,592 psi | 86% | 2680 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,529 psi | 76% | 2664 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,792 psi | 80% | 2651 fps | 99.3% |
| Winchester 748 | <<locked>> | 90% | 55,056 psi | 88% | 2756 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 54,041 psi | 87% | 2730 fps | 99.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 41,945 psi | 67% | 2448 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,600 psi | 73% | 2543 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,345 psi | 55% | 2359 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,625 psi | 65% | 2493 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 32,474 psi | 52% | 2339 fps | 98.8% |
| Accurate 4350 | <<locked>> | 96% | 40,045 psi | 64% | 2556 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 50,256 psi | 81% | 2523 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,647 psi | 81% | 2546 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,508 psi | 62% | 2448 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 37,202 psi | 60% | 2405 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 50,386 psi | 81% | 2631 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,480 psi | 65% | 2464 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 80% | 39,581 psi | 63% | 2470 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,833 psi | 75% | 2654 fps | 99% |
| Alliant Power Pro 2000-MR | 68.9 gr | 84% | 39,639 psi | 64% | 2562 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,850 psi | 51% | 2323 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,427 psi | 76% | 2539 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,637 psi | 59% | 2428 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 96% | 40,814 psi | 65% | 2566 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,665 psi | 57% | 2484 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,255 psi | 79% | 2523 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 39,856 psi | 64% | 2493 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 31,024 psi | 50% | 2316 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,438 psi | 68% | 2461 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,566 psi | 62% | 2474 fps | 98.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,250 psi | 68% | 2598 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 80% | 46,108 psi | 74% | 2566 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,833 psi | 75% | 2589 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 41,945 psi | 67% | 2526 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 38,754 psi | 62% | 2461 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,998 psi | 56% | 2411 fps | 95.8% |
| Hodgdon LEVERevolution | 64.3 gr | 80% | 34,635 psi | 56% | 2418 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,701 psi | 41% | 1450 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,333 psi | 60% | 2415 fps | 96.8% |
| IMR 3031 | <<locked>> | 80% | 37,681 psi | 60% | 2467 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,637 psi | 59% | 2388 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 90% | 50,647 psi | 81% | 2608 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 47,993 psi | 77% | 2507 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 52,692 psi | 84% | 2671 fps | 95.5% |
| IMR 4831 | <<locked>> | 96% | 38,682 psi | 62% | 2510 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 35,186 psi | 56% | 2408 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 40,480 psi | 65% | 2464 fps | 98.3% |
| Lovex D073.5 | <<locked>> | 80% | 45,353 psi | 73% | 2546 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 36,883 psi | 59% | 2431 fps | 98.9% |
| Lovex S060 | <<locked>> | 80% | 39,204 psi | 63% | 2398 fps | 96.8% |
| Lovex S062 | <<locked>> | 80% | 34,069 psi | 55% | 2343 fps | 96.7% |
| Lovex S065 | <<locked>> | 96% | 45,571 psi | 73% | 2566 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 37,681 psi | 60% | 2408 fps | 97.7% |
| Norma 202 | <<locked>> | 80% | 37,782 psi | 61% | 2425 fps | 99.4% |
| Norma 203B | <<locked>> | 80% | 33,823 psi | 54% | 2369 fps | 95.1% |
| Norma URP | <<locked>> | 96% | 40,640 psi | 65% | 2556 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 82% | 35,418 psi | 57% | 2425 fps | 95.3% |
| Ramshot TAC | <<locked>> | 82% | 43,149 psi | 69% | 2510 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,407 psi | 63% | 2477 fps | 96.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,729 psi | 70% | 2507 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,078 psi | 42% | 1490 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,440 psi | 73% | 2549 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 48,646 psi | 78% | 2618 fps | 95.4% |
| ReloadSwiss RS 52 | 65.2 gr | 82% | 37,898 psi | 61% | 2520 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,399 psi | 47% | 2326 fps | 95.7% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 40,059 psi | 64% | 2572 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 44,092 psi | 71% | 2641 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 41,524 psi | 67% | 2461 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 35,940 psi | 58% | 2362 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 84% | 33,460 psi | 54% | 2365 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 45,571 psi | 73% | 2566 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,883 psi | 59% | 2431 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 34,069 psi | 55% | 2343 fps | 96.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,022 psi | 77% | 2562 fps | 99.2% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,749 psi | 81% | 2641 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 34,751 psi | 56% | 2415 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,066 psi | 77% | 2556 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 41,002 psi | 66% | 2480 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,999 psi | 59% | 2418 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,334 psi | 63% | 2379 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,314 psi | 52% | 2251 fps | 99.1% |
| Somchem S321 | <<locked>> | 80% | 43,410 psi | 70% | 2539 fps | 99% |
| Somchem S335 | <<locked>> | 80% | 38,812 psi | 62% | 2382 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 38,072 psi | 61% | 2431 fps | 96.3% |
| Somchem S355 | <<locked>> | 82% | 32,314 psi | 52% | 2323 fps | 95.1% |
| Somchem S365 | <<locked>> | 90% | 29,994 psi | 48% | 2346 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 44,599 psi | 72% | 2451 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,465 psi | 63% | 2382 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,737 psi | 56% | 2359 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,665 psi | 57% | 2362 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 28,805 psi | 46% | 2221 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 94% | 40,161 psi | 64% | 2510 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 40,277 psi | 65% | 2457 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 80% | 34,272 psi | 55% | 2349 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 96% | 41,843 psi | 67% | 2562 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,620 psi | 54% | 2339 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 39,349 psi | 63% | 2497 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,100 psi | 58% | 2415 fps | 96.5% |
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 93 powders for .375 H&H Mag. loaded with the .375 | 250gr | Sierra GameKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,854 fps; across all powders the maximum-charge window runs from 1,624 fps to 2,854 fps. Accurate 4350 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon LEVERevolution rank at the top here: for .375 H&H Mag. with the .375 | 250gr | Sierra GameKing 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.