Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 165gr | Hornady SST InterLock 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-16, ReloadSwiss RS 70 and Alliant Reloder-26.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 53,301 psi | 85% | 2825 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,650 psi | 88% | 2887 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,750 psi | 83% | 2917 fps | 99% |
| Accurate 4064 | <<locked>> | 84% | 53,606 psi | 86% | 2877 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,085 psi | 87% | 2979 fps | 99.9% |
| Accurate High Country | <<locked>> | 98% | 52,779 psi | 85% | 3054 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 82% | 56,130 psi | 90% | 2956 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,911 psi | 86% | 2907 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,288 psi | 89% | 3018 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 52,866 psi | 85% | 3025 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,288 psi | 89% | 3015 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,462 psi | 87% | 2930 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,839 psi | 88% | 2956 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,897 psi | 88% | 3038 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,217 psi | 90% | 3064 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,505 psi | 87% | 3002 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,445 psi | 82% | 2999 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,530 psi | 78% | 2936 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,424 psi | 68% | 2851 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,912 psi | 90% | 3140 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,043 psi | 90% | 2972 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,152 psi | 76% | 2917 fps | 95.9% |
| Bofors RP3 | <<locked>> | 86% | 55,463 psi | 89% | 2949 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,445 psi | 82% | 2999 fps | 97.1% |
| Bofors RP7 | <<locked>> | 90% | 54,853 psi | 88% | 2930 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 86% | 55,695 psi | 89% | 2963 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 56,434 psi | 90% | 3031 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 90% | 56,362 psi | 90% | 2989 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,274 psi | 89% | 2959 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,330 psi | 86% | 2946 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 52,750 psi | 85% | 3002 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,289 psi | 58% | 1841 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,288 psi | 87% | 2913 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,461 psi | 86% | 2894 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,043 psi | 90% | 2927 fps | 98.9% |
| IMR 4350 | <<locked>> | 94% | 55,608 psi | 89% | 2959 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,405 psi | 90% | 2956 fps | 98.9% |
| IMR 4831 | <<locked>> | 94% | 54,462 psi | 87% | 2969 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,260 psi | 90% | 2982 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 56,434 psi | 90% | 2927 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,868 psi | 88% | 2877 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,548 psi | 86% | 2887 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,405 psi | 90% | 2953 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 54,389 psi | 87% | 2943 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,018 psi | 69% | 2762 fps | 97.5% |
| Norma 201 | <<locked>> | 82% | 54,926 psi | 88% | 2900 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,492 psi | 89% | 2894 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,128 psi | 87% | 2940 fps | 100% |
| Norma 204 | <<locked>> | 92% | 52,707 psi | 85% | 2949 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 54,868 psi | 88% | 3091 fps | 98.9% |
| Norma URP | <<locked>> | 94% | 56,362 psi | 90% | 3018 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,694 psi | 88% | 2963 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,317 psi | 89% | 3018 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,078 psi | 72% | 2854 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,956 psi | 59% | 1883 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,695 psi | 89% | 2946 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,709 psi | 89% | 3022 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,637 psi | 89% | 3058 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,983 psi | 87% | 2999 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,246 psi | 90% | 3084 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 55,419 psi | 89% | 2897 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,317 psi | 89% | 2943 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 53,505 psi | 86% | 2930 fps | 96% |
| Rottweil R 905 | <<locked>> | 98% | 53,548 psi | 86% | 2986 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 54,853 psi | 88% | 2930 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,405 psi | 90% | 2953 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,434 psi | 90% | 2927 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 53,548 psi | 86% | 2887 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,389 psi | 87% | 2943 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,316 psi | 85% | 2946 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,621 psi | 88% | 2927 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,709 psi | 89% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,185 psi | 85% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,434 psi | 90% | 2907 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,069 psi | 85% | 2982 fps | 97.4% |
| Somchem S335 | <<locked>> | 82% | 55,448 psi | 89% | 2828 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,332 psi | 89% | 2940 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 55,564 psi | 89% | 3018 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,447 psi | 87% | 2966 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 56,202 psi | 90% | 2812 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,782 psi | 89% | 2858 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,130 psi | 90% | 2874 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,156 psi | 85% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,056 psi | 88% | 2959 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,980 psi | 80% | 2877 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 84% | 54,201 psi | 87% | 2867 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,201 psi | 87% | 2963 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,476 psi | 87% | 3018 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,303 psi | 89% | 3077 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,766 psi | 88% | 2927 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,852 psi | 85% | 2972 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,976 psi | 71% | 2989 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,665 psi | 88% | 2933 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,418 psi | 87% | 2956 fps | 97.4% |
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 2495 | <<locked>> | 80% | 49,879 psi | 80% | 2776 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,877 psi | 77% | 2769 fps | 96.8% |
| Accurate 3100 | <<locked>> | 90% | 36,767 psi | 59% | 2628 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 47,224 psi | 76% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,752 psi | 57% | 2625 fps | 97.1% |
| Accurate High Country | <<locked>> | 96% | 49,298 psi | 79% | 2992 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 52,649 psi | 84% | 2900 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,802 psi | 72% | 2749 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 45,310 psi | 73% | 2835 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,182 psi | 79% | 2963 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 45,397 psi | 73% | 2835 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,049 psi | 72% | 2772 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,182 psi | 77% | 2841 fps | 99.8% |
| Alliant Reloder-16 | 57.8 gr | 80% | 35,114 psi | 56% | 2635 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,581 psi | 63% | 2766 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,846 psi | 72% | 2825 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 45,208 psi | 72% | 2877 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,369 psi | 44% | 2434 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,114 psi | 56% | 2667 fps | 95.4% |
| Alliant Reloder-26 | 68.5 gr | 86% | 33,518 psi | 54% | 2671 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,417 psi | 84% | 2913 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 44,353 psi | 71% | 2858 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 45,440 psi | 73% | 2785 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 45,208 psi | 72% | 2877 fps | 95.5% |
| Bofors RP7 | <<locked>> | 82% | 42,757 psi | 69% | 2703 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 45,803 psi | 73% | 2792 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 40,451 psi | 65% | 2730 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 82% | 43,598 psi | 70% | 2756 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,619 psi | 52% | 2530 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,951 psi | 80% | 2890 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 42,366 psi | 68% | 2802 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 43% | 1644 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,894 psi | 82% | 2861 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,123 psi | 76% | 2782 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,371 psi | 79% | 2808 fps | 97.9% |
| IMR 4350 | <<locked>> | 84% | 40,611 psi | 65% | 2677 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,466 psi | 66% | 2677 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 34,432 psi | 55% | 2575 fps | 96.7% |
| IMR 4895 | <<locked>> | 80% | 49,414 psi | 79% | 2871 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 52,866 psi | 85% | 2874 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,735 psi | 83% | 2825 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,282 psi | 76% | 2782 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,957 psi | 62% | 2628 fps | 96.7% |
| Lovex S070 | <<locked>> | 82% | 39,610 psi | 64% | 2657 fps | 95.7% |
| Lovex S071 | <<locked>> | 94% | 35,418 psi | 57% | 2598 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 51,488 psi | 83% | 2844 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,025 psi | 83% | 2844 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,587 psi | 76% | 2828 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 46,122 psi | 74% | 2828 fps | 95.3% |
| Norma MRP | <<locked>> | 92% | 41,495 psi | 67% | 2831 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 35,737 psi | 57% | 2621 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 80% | 47,834 psi | 77% | 2851 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 37,057 psi | 59% | 2661 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 41,858 psi | 67% | 2785 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,586 psi | 44% | 1686 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,861 psi | 74% | 2772 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,837 psi | 83% | 2963 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,047 psi | 67% | 2825 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,534 psi | 57% | 2638 fps | 96.6% |
| ReloadSwiss RS 70 | 63.2 gr | 80% | 34,693 psi | 56% | 2641 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 49,124 psi | 79% | 2799 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,757 psi | 69% | 2730 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 50,111 psi | 80% | 2871 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 92% | 43,888 psi | 70% | 2808 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 82% | 42,757 psi | 69% | 2703 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,957 psi | 62% | 2628 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,866 psi | 85% | 2874 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,282 psi | 76% | 2782 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,610 psi | 64% | 2657 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,671 psi | 70% | 2779 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,053 psi | 82% | 2867 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,402 psi | 84% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,193 psi | 71% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,130 psi | 61% | 2569 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,468 psi | 70% | 2802 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 52,069 psi | 83% | 2779 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,062 psi | 69% | 2726 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 32,184 psi | 52% | 2575 fps | 98.9% |
| Somchem S385 | <<locked>> | 90% | 41,872 psi | 67% | 2736 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 52,895 psi | 85% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,226 psi | 79% | 2762 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,516 psi | 79% | 2776 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,176 psi | 66% | 2657 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,057 psi | 59% | 2621 fps | 97.3% |
| Vihtavuori N165 | <<locked>> | 96% | 43,888 psi | 70% | 2766 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 47,776 psi | 77% | 2769 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,564 psi | 59% | 2621 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 29,936 psi | 48% | 2510 fps | 95.4% |
| Vihtavuori N560 | <<locked>> | 98% | 51,488 psi | 83% | 3009 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,332 psi | 58% | 2592 fps | 99% |
| Winchester 760 | <<locked>> | 82% | 40,451 psi | 65% | 2730 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,456 psi | 44% | 2516 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,053 psi | 82% | 2877 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,326 psi | 76% | 2838 fps | 95.8% |
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 .300 Win. Mag. loaded with the .308 | 165gr | Hornady SST InterLock. Alliant Reloder-26 delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,841 fps to 3,140 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 (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, 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. Alliant Reloder-16, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for .300 Win. Mag. with the .308 | 165gr | Hornady SST InterLock 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.