Load Specifications
Load data in caliber .300 WSM with .308 | 220gr | Woodleigh RN SN bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Ramshot Grand.
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 2700 | <<locked>> | 86% | 56,695 psi | 89% | 2516 fps | 99.7% |
| Accurate 3100 | <<locked>> | 98% | 53,853 psi | 84% | 2560 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 55,288 psi | 87% | 2484 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 56,101 psi | 88% | 2595 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,768 psi | 89% | 2703 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 84% | 55,071 psi | 86% | 2517 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,797 psi | 89% | 2644 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 98% | 54,273 psi | 85% | 2644 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,174 psi | 60% | 2402 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,014 psi | 88% | 2536 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,159 psi | 88% | 2557 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,681 psi | 89% | 2642 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,230 psi | 85% | 2613 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,072 psi | 88% | 2633 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 53,519 psi | 84% | 2641 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,796 psi | 87% | 2615 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,414 psi | 76% | 2571 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,244 psi | 85% | 2700 fps | 100% |
| Baschieri & Pellagri 109ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 2610 fps | 96% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,489 psi | 82% | 2625 fps | 99.1% |
| Bofors RP3 | <<locked>> | 84% | 56,927 psi | 89% | 2552 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,932 psi | 69% | 2502 fps | 96.9% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,435 psi | 90% | 2694 fps | 99.6% |
| Bofors RP7 | <<locked>> | 88% | 55,883 psi | 88% | 2548 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 43,439 psi | 68% | 2461 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 84% | 57,145 psi | 90% | 2573 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,492 psi | 87% | 2611 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 90% | 55,956 psi | 88% | 2585 fps | 99.5% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 55,187 psi | 86% | 2579 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,985 psi | 89% | 2626 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,101 psi | 89% | 2570 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,042 psi | 86% | 2552 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,093 psi | 72% | 2615 fps | 99% |
| Hodgdon Superformance | <<locked>> | 88% | 54,534 psi | 85% | 2635 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,652 psi | 59% | 1560 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,505 psi | 85% | 2503 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,421 psi | 90% | 2536 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,985 psi | 88% | 2524 fps | 99.9% |
| IMR 4350 | <<locked>> | 92% | 57,072 psi | 89% | 2582 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,508 psi | 90% | 2569 fps | 99.9% |
| IMR 4831 | <<locked>> | 96% | 57,479 psi | 90% | 2599 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,624 psi | 90% | 2580 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,043 psi | 88% | 2579 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 98% | 57,116 psi | 90% | 2682 fps | 98.8% |
| Lovex S062 | <<locked>> | 82% | 54,766 psi | 86% | 2491 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,711 psi | 90% | 2565 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 55,825 psi | 87% | 2565 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,168 psi | 77% | 2479 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 55,448 psi | 87% | 2543 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,143 psi | 85% | 2583 fps | 99.1% |
| Norma MRP | <<locked>> | 98% | 56,971 psi | 89% | 2716 fps | 100% |
| Norma URP | <<locked>> | 90% | 54,781 psi | 86% | 2582 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,231 psi | 88% | 2570 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,738 psi | 87% | 2689 fps | 99% |
| Ramshot Hunter | <<locked>> | 92% | 57,058 psi | 89% | 2637 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,797 psi | 89% | 2668 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,537 psi | 60% | 1597 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,884 psi | 89% | 2561 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,595 psi | 90% | 2649 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,840 psi | 88% | 2618 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,027 psi | 85% | 2643 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,094 psi | 74% | 2610 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 82% | 56,536 psi | 89% | 2497 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 57,072 psi | 89% | 2549 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,984 psi | 86% | 2568 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 96% | 55,666 psi | 87% | 2625 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 88% | 55,883 psi | 88% | 2548 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,711 psi | 90% | 2565 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 54,766 psi | 86% | 2491 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,825 psi | 87% | 2566 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,940 psi | 86% | 2560 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,479 psi | 90% | 2431 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,290 psi | 90% | 2526 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,201 psi | 87% | 2621 fps | 99.4% |
| Somchem S355 | <<locked>> | 86% | 56,855 psi | 89% | 2545 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,347 psi | 88% | 2563 fps | 98.1% |
| Somchem S365 | <<locked>> | 92% | 54,302 psi | 85% | 2582 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,072 psi | 88% | 2598 fps | 99.8% |
| Unknown powder | <<locked>> | 88% | 55,216 psi | 87% | 2584 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 56,724 psi | 89% | 2406 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 57,348 psi | 90% | 2457 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,405 psi | 88% | 2464 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,071 psi | 86% | 2485 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,593 psi | 87% | 2555 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,694 psi | 86% | 2550 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 82% | 56,217 psi | 88% | 2492 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,854 psi | 88% | 2596 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 53,432 psi | 84% | 2596 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,766 psi | 84% | 2666 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,024 psi | 78% | 2579 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,188 psi | 88% | 2541 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,492 psi | 87% | 2611 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,705 psi | 79% | 2689 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,143 psi | 85% | 2569 fps | 99.2% |
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 2700 | <<locked>> | 80% | 46,717 psi | 73% | 2372 fps | 98.7% |
| Accurate 3100 | <<locked>> | 80% | 29,617 psi | 46% | 2127 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 51,924 psi | 81% | 2441 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,132 psi | 63% | 2352 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 94% | 45,948 psi | 72% | 2536 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 48,588 psi | 76% | 2425 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 36,172 psi | 57% | 2288 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 90% | 41,655 psi | 65% | 2429 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 96% | 33,112 psi | 52% | 2296 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,385 psi | 77% | 2447 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,765 psi | 83% | 2512 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,769 psi | 61% | 2360 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,048 psi | 69% | 2465 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 36,013 psi | 56% | 2286 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,100 psi | 57% | 2331 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,543 psi | 45% | 2154 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,500 psi | 45% | 2167 fps | 95.7% |
| Alliant Reloder-26 | 56.3 gr | 80% | 30,530 psi | 48% | 2263 fps | 97.6% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 53,476 psi | 84% | 2559 fps | 95.2% |
| Bofors RP15 | <<locked>> | 88% | 35,839 psi | 56% | 2323 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 49,850 psi | 78% | 2459 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 37,637 psi | 59% | 2398 fps | 95.1% |
| Bofors RP5 | <<locked>> | 86% | 36,100 psi | 57% | 2333 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 43,729 psi | 69% | 2358 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 96% | 38,174 psi | 60% | 2356 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 50,125 psi | 79% | 2475 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,469 psi | 71% | 2458 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 41,118 psi | 64% | 2343 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 94% | 44,353 psi | 70% | 2431 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 43,671 psi | 68% | 2419 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,492 psi | 57% | 2263 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,692 psi | 81% | 2510 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 35,665 psi | 56% | 2388 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 40,799 psi | 64% | 2414 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 43% | 1389 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,416 psi | 81% | 2461 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,993 psi | 75% | 2405 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,746 psi | 73% | 2385 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 39,363 psi | 62% | 2300 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,005 psi | 71% | 2382 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 34,838 psi | 55% | 2237 fps | 99% |
| IMR 4895 | <<locked>> | 80% | 54,157 psi | 85% | 2534 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 43,801 psi | 69% | 2385 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 88% | 40,030 psi | 63% | 2408 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 51,430 psi | 81% | 2446 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,598 psi | 67% | 2338 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 40,930 psi | 64% | 2328 fps | 98.4% |
| Lovex S071 | <<locked>> | 84% | 29,037 psi | 46% | 2112 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 52,127 psi | 82% | 2499 fps | 100% |
| Norma 204 | <<locked>> | 80% | 38,856 psi | 61% | 2326 fps | 96% |
| Norma MRP | 56 gr | 82% | 32,938 psi | 52% | 2286 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 39,697 psi | 62% | 2346 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 80% | 52,591 psi | 82% | 2523 fps | 100% |
| Ramshot Grand | 60.6 gr | 86% | 38,798 psi | 61% | 2397 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 38,464 psi | 60% | 2339 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 86% | 33,547 psi | 53% | 2270 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,079 psi | 44% | 1425 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,053 psi | 78% | 2465 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,775 psi | 73% | 2507 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,871 psi | 62% | 2372 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,392 psi | 60% | 2383 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 32,605 psi | 51% | 2313 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 53,388 psi | 84% | 2456 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,079 psi | 74% | 2414 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 40,016 psi | 63% | 2321 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 82% | 35,157 psi | 55% | 2271 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 43,729 psi | 69% | 2358 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,598 psi | 67% | 2338 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 51,430 psi | 81% | 2446 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,930 psi | 64% | 2329 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,254 psi | 76% | 2466 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,964 psi | 75% | 2313 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,756 psi | 65% | 2292 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 34,824 psi | 55% | 2267 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 47,166 psi | 74% | 2411 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 43,511 psi | 68% | 2364 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 36,260 psi | 57% | 2308 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 33,388 psi | 52% | 2207 fps | 95.4% |
| Unknown powder | <<locked>> | 80% | 42,699 psi | 67% | 2393 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 80% | 53,490 psi | 84% | 2367 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 53,766 psi | 84% | 2415 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,011 psi | 83% | 2423 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,582 psi | 64% | 2277 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,627 psi | 67% | 2365 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 86% | 34,098 psi | 53% | 2219 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 52,634 psi | 82% | 2447 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 43,279 psi | 68% | 2407 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 31,720 psi | 50% | 2219 fps | 98.7% |
| Vihtavuori N560 | <<locked>> | 90% | 41,394 psi | 65% | 2453 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 94% | 40,016 psi | 63% | 2422 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,871 psi | 62% | 2310 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,469 psi | 71% | 2458 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,280 psi | 40% | 2152 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,462 psi | 56% | 2253 fps | 95% |
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 99 powders for .300 WSM loaded with the .308 | 220gr | Woodleigh RN SN. Norma MRP delivers the highest muzzle velocity at 2,716 fps; across all powders the maximum-charge window runs from 1,560 fps to 2,716 fps. Accurate MAGPRO gives the best case fill at 100 %, and 99 of the 99 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate MAGPRO, ADI AR 2217, ADI AR 2225 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 Reloder-26, Norma MRP, Ramshot Grand rank at the top here: for .300 WSM with the .308 | 220gr | Woodleigh RN SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, ReloadSwiss RS 80, Vihtavuori N568 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.