Load Specifications
Load data in caliber 10.3 x 68 Mag. with .412 | 300gr | Alaska Bullet Works Kodiak PP SPBC bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Ramshot Wild Boar.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 54,621 psi | 86% | 2490 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 57,305 psi | 90% | 2589 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 55,100 psi | 86% | 2635 fps | 98.1% |
| Accurate 2230 | <<locked>> | 86% | 55,869 psi | 88% | 2644 fps | 98.5% |
| Accurate 2460 | <<locked>> | 92% | 56,188 psi | 88% | 2618 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 52,968 psi | 83% | 2595 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 54,882 psi | 86% | 2651 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 54,882 psi | 86% | 2651 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 49,081 psi | 77% | 2582 fps | 100% |
| Accurate LT-30 | <<locked>> | 88% | 55,405 psi | 87% | 2510 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 55,825 psi | 87% | 2530 fps | 100% |
| ADI AR 2206H | <<locked>> | 98% | 56,347 psi | 88% | 2667 fps | 99% |
| ADI AR 2207 | <<locked>> | 86% | 56,463 psi | 88% | 2536 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 50,502 psi | 79% | 2562 fps | 97.5% |
| ADI AR 2219 | <<locked>> | 88% | 54,897 psi | 86% | 2618 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 55,869 psi | 88% | 2631 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 96% | 54,172 psi | 85% | 2618 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 57,072 psi | 89% | 2730 fps | 99.5% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 56,028 psi | 88% | 2756 fps | 98.3% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 56,927 psi | 89% | 2680 fps | 99.4% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 48,747 psi | 76% | 2579 fps | 98.7% |
| Alliant Reloder-10x | <<locked>> | 92% | 57,493 psi | 90% | 2605 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 53,272 psi | 83% | 2644 fps | 98.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 43,569 psi | 68% | 2559 fps | 97.1% |
| Alliant Reloder-7 | <<locked>> | 86% | 57,566 psi | 90% | 2549 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 54,215 psi | 85% | 2510 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 56,086 psi | 88% | 2674 fps | 98.1% |
| Bofors RP3ᴾ | <<locked>> | 100% | 48,573 psi | 76% | 2589 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 94% | 55,361 psi | 87% | 2579 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 96% | 53,998 psi | 85% | 2657 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 94% | 56,086 psi | 88% | 2740 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 94% | 55,535 psi | 87% | 2628 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 54,186 psi | 85% | 2618 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 50,966 psi | 80% | 2595 fps | 96.5% |
| Hodgdon H4198 | <<locked>> | 88% | 57,203 psi | 90% | 2552 fps | 100% |
| Hodgdon H4895 | <<locked>> | 98% | 56,724 psi | 89% | 2677 fps | 99.4% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 51,010 psi | 80% | 2648 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,605 psi | 53% | 1542 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 53,417 psi | 84% | 2612 fps | 99% |
| IMR 3031ᴾ | <<locked>> | 100% | 52,736 psi | 83% | 2641 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 48,979 psi | 77% | 2533 fps | 97.5% |
| IMR 4198 | <<locked>> | 90% | 54,984 psi | 86% | 2530 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 57,159 psi | 90% | 2490 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 2677 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 96% | 55,869 psi | 88% | 2631 fps | 99.6% |
| Lovex D073.4 | <<locked>> | 86% | 56,666 psi | 89% | 2631 fps | 100% |
| Lovex D073.5 | <<locked>> | 92% | 56,246 psi | 88% | 2625 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 98% | 54,621 psi | 86% | 2648 fps | 100% |
| Lovex S053 | <<locked>> | 82% | 56,043 psi | 88% | 2438 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 57,261 psi | 90% | 2602 fps | 99% |
| Lovex S062ᴾ | <<locked>> | 100% | 52,098 psi | 82% | 2595 fps | 99.4% |
| Norma 200 | <<locked>> | 86% | 54,201 psi | 85% | 2543 fps | 100% |
| Norma 201 | <<locked>> | 98% | 54,824 psi | 86% | 2618 fps | 99.5% |
| Norma 202 | <<locked>> | 98% | 54,998 psi | 86% | 2628 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 52,286 psi | 82% | 2635 fps | 98.6% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 52,823 psi | 83% | 2654 fps | 98.4% |
| Ramshot TAC | <<locked>> | 96% | 57,116 psi | 90% | 2638 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 96% | 55,448 psi | 87% | 2661 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 92% | 54,447 psi | 85% | 2589 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,721 psi | 53% | 1581 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 56,014 psi | 88% | 2625 fps | 100% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 56,260 psi | 88% | 2753 fps | 98.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 46,601 psi | 73% | 2631 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 96% | 55,956 psi | 88% | 2608 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 54,998 psi | 86% | 2608 fps | 99.5% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 45,179 psi | 71% | 2530 fps | 98% |
| Shooters World AR Plus | <<locked>> | 86% | 56,666 psi | 89% | 2631 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 98% | 54,621 psi | 86% | 2648 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 52,098 psi | 82% | 2595 fps | 99.4% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 56,695 psi | 89% | 2598 fps | 99.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 56,289 psi | 88% | 2293 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 55,390 psi | 87% | 2628 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 47,601 psi | 75% | 2582 fps | 97.6% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 55,187 psi | 86% | 2579 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 54,549 psi | 85% | 2612 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 54,621 psi | 86% | 2638 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 54,520 psi | 85% | 2536 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 50,125 psi | 79% | 2484 fps | 100% |
| Somchem S321 | <<locked>> | 94% | 57,537 psi | 90% | 2671 fps | 99.8% |
| Somchem S335 | <<locked>> | 98% | 56,318 psi | 88% | 2572 fps | 100% |
| Somchem S341 | <<locked>> | 98% | 57,522 psi | 90% | 2657 fps | 99% |
| Somchem S355ᴾ | <<locked>> | 100% | 46,383 psi | 73% | 2533 fps | 98% |
| Vihtavuori N120 | <<locked>> | 86% | 56,333 psi | 88% | 2484 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 57,696 psi | 90% | 2552 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 57,261 psi | 90% | 2562 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 53,258 psi | 83% | 2589 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 2605 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 44,802 psi | 70% | 2477 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 96% | 56,724 psi | 89% | 2631 fps | 99.7% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 53,780 psi | 84% | 2605 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,466 psi | 65% | 2411 fps | 96.4% |
| Winchester 748 | <<locked>> | 94% | 56,231 psi | 88% | 2687 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 57,130 psi | 90% | 2684 fps | 99.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 50,995 psi | 80% | 2444 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 34,911 psi | 55% | 2264 fps | 99.8% |
| Accurate 2200 | <<locked>> | 80% | 45,237 psi | 71% | 2484 fps | 96.3% |
| Accurate 2230 | <<locked>> | 80% | 45,208 psi | 71% | 2490 fps | 96.7% |
| Accurate 2460 | <<locked>> | 80% | 37,449 psi | 59% | 2336 fps | 98.6% |
| Accurate 2495 | <<locked>> | 80% | 27,282 psi | 43% | 2162 fps | 98.8% |
| Accurate 2520 | <<locked>> | 80% | 31,502 psi | 49% | 2264 fps | 96.7% |
| Accurate 2520 | <<locked>> | 80% | 31,502 psi | 49% | 2264 fps | 96.7% |
| Accurate 4064 | <<locked>> | 80% | 25,875 psi | 41% | 2136 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 43,584 psi | 68% | 2349 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 80% | 43,947 psi | 69% | 2359 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 38,740 psi | 61% | 2385 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 46,905 psi | 74% | 2415 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 42,076 psi | 66% | 2425 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 41,989 psi | 66% | 2434 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 33,968 psi | 53% | 2264 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 31,952 psi | 50% | 2280 fps | 100% |
| Alliant Power Pro 1200-R | 61.8 gr | 80% | 38,580 psi | 60% | 2431 fps | 96.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 42,989 psi | 67% | 2539 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 36,593 psi | 57% | 2349 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 33,373 psi | 52% | 2303 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,900 psi | 63% | 2362 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 38,856 psi | 61% | 2408 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 96% | 38,145 psi | 60% | 2451 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 47,950 psi | 75% | 2428 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 42,090 psi | 66% | 2343 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 43,076 psi | 68% | 2477 fps | 95.4% |
| Bofors RP3 | <<locked>> | 90% | 34,693 psi | 54% | 2349 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,216 psi | 57% | 2270 fps | 96.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,357 psi | 49% | 2264 fps | 95.3% |
| Hodgdon CFE223 | 70.7 gr | 84% | 39,885 psi | 63% | 2474 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 35,505 psi | 56% | 2316 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 80% | 41,176 psi | 65% | 2428 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 96% | 44,556 psi | 70% | 2497 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 45,107 psi | 71% | 2385 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 84% | 36,448 psi | 57% | 2349 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 34,824 psi | 55% | 2356 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,874 psi | 39% | 1378 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 36,999 psi | 58% | 2343 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 28,094 psi | 44% | 2201 fps | 98% |
| IMR 4064 | <<locked>> | 94% | 40,814 psi | 64% | 2398 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 41,060 psi | 64% | 2339 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 53,896 psi | 84% | 2451 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 37,159 psi | 58% | 2388 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 33,968 psi | 53% | 2264 fps | 95.4% |
| Lovex D073.4 | <<locked>> | 80% | 45,847 psi | 72% | 2484 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 80% | 37,347 psi | 59% | 2336 fps | 97.6% |
| Lovex D073.6 | <<locked>> | 80% | 29,544 psi | 46% | 2218 fps | 96% |
| Lovex S053 | <<locked>> | 80% | 52,881 psi | 83% | 2402 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 37,753 psi | 59% | 2293 fps | 95.2% |
| Lovex S062 | <<locked>> | 86% | 33,837 psi | 53% | 2280 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 45,020 psi | 71% | 2421 fps | 100% |
| Norma 201 | <<locked>> | 82% | 33,402 psi | 52% | 2254 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 31,227 psi | 49% | 2231 fps | 97.3% |
| Norma 203B | <<locked>> | 90% | 38,101 psi | 60% | 2402 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 92% | 40,698 psi | 64% | 2457 fps | 95.8% |
| Ramshot TAC | <<locked>> | 92% | 50,169 psi | 79% | 2543 fps | 95.5% |
| Ramshot Wild Boar | 69.3 gr | 84% | 37,202 psi | 58% | 2365 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 82% | 39,465 psi | 62% | 2352 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,932 psi | 39% | 1411 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,174 psi | 60% | 2349 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 40,176 psi | 63% | 2493 fps | 95.3% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 31,662 psi | 50% | 2313 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 34,882 psi | 55% | 2270 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 33,765 psi | 53% | 2254 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 92% | 34,635 psi | 54% | 2339 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 80% | 45,847 psi | 72% | 2484 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,544 psi | 46% | 2218 fps | 96% |
| Shooters World Precision | <<locked>> | 86% | 33,837 psi | 53% | 2280 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 40,393 psi | 63% | 2356 fps | 97% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 48,225 psi | 76% | 2201 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 42,467 psi | 67% | 2441 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 39,276 psi | 62% | 2438 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 40,437 psi | 63% | 2369 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 47,500 psi | 74% | 2510 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 37,289 psi | 58% | 2356 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,315 psi | 52% | 2195 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,963 psi | 42% | 2070 fps | 96.8% |
| Somchem S321 | <<locked>> | 80% | 35,955 psi | 56% | 2329 fps | 96.5% |
| Somchem S335 | <<locked>> | 80% | 32,663 psi | 51% | 2198 fps | 98.4% |
| Somchem S341 | <<locked>> | 86% | 38,232 psi | 60% | 2362 fps | 95.2% |
| Somchem S355 | <<locked>> | 92% | 36,172 psi | 57% | 2352 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 46,934 psi | 74% | 2372 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 37,884 psi | 59% | 2280 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,141 psi | 52% | 2205 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 80% | 28,181 psi | 44% | 2172 fps | 98.9% |
| Vihtavuori N140 | <<locked>> | 80% | 29,457 psi | 46% | 2172 fps | 97% |
| Vihtavuori N150 | <<locked>> | 90% | 32,387 psi | 51% | 2251 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 33,576 psi | 53% | 2254 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 28,253 psi | 44% | 2156 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 38,725 psi | 61% | 2362 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 34,838 psi | 55% | 2343 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,956 psi | 58% | 2369 fps | 95.7% |
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 10.3 x 68 Mag. loaded with the .412 | 300gr | Alaska Bullet Works Kodiak PP SPBC. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,756 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,756 fps. Accurate 2495 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 (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. Accurate 2495, Accurate 4064, ADI AR 2208 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. Hodgdon CFE223, Alliant Power Pro 1200-R, Ramshot Wild Boar rank at the top here: for 10.3 x 68 Mag. with the .412 | 300gr | Alaska Bullet Works Kodiak PP SPBC 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.