Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 150gr | Sako Powerhead Blade 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-17, ReloadSwiss RS 60 and Hodgdon H414.
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>> | 84% | 55,361 psi | 89% | 2930 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 53,940 psi | 86% | 2949 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,101 psi | 90% | 3022 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 53,461 psi | 86% | 2943 fps | 96.3% |
| Accurate 4064 | <<locked>> | 90% | 53,954 psi | 87% | 2995 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,317 psi | 87% | 3081 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 54,679 psi | 88% | 3031 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 55,941 psi | 90% | 3031 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 53,664 psi | 86% | 2982 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,433 psi | 87% | 2959 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,520 psi | 87% | 3153 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,869 psi | 90% | 3054 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 52,953 psi | 85% | 3022 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,782 psi | 89% | 3146 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 94% | 53,374 psi | 86% | 3123 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,682 psi | 64% | 2851 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,512 psi | 71% | 3018 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,650 psi | 88% | 3045 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 56,434 psi | 90% | 3068 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 53,040 psi | 85% | 2979 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,274 psi | 89% | 2963 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 53,026 psi | 85% | 3009 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,056 psi | 88% | 3110 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 90% | 53,838 psi | 86% | 3025 fps | 99% |
| Hodgdon H414 | <<locked>> | 96% | 53,621 psi | 86% | 3074 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 94% | 54,288 psi | 87% | 3038 fps | 96% |
| Hodgdon H4895 | <<locked>> | 86% | 55,288 psi | 89% | 3041 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,851 psi | 83% | 3009 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,984 psi | 88% | 3077 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,447 psi | 87% | 3110 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,273 psi | 57% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,113 psi | 85% | 2992 fps | 99.9% |
| IMR 3031 | <<locked>> | 86% | 55,288 psi | 89% | 3028 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,216 psi | 89% | 3015 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,361 psi | 89% | 2992 fps | 97.4% |
| IMR 4350 | <<locked>> | 98% | 53,534 psi | 86% | 3005 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,027 psi | 88% | 3015 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,926 psi | 88% | 3071 fps | 99.5% |
| IMR 4895 | <<locked>> | 88% | 54,317 psi | 87% | 3054 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 53,664 psi | 86% | 2982 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,404 psi | 87% | 3005 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,288 psi | 87% | 2959 fps | 99.8% |
| Lovex S062 | <<locked>> | 90% | 55,071 psi | 88% | 3012 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,462 psi | 87% | 3009 fps | 98.5% |
| Lovex S070 | <<locked>> | 98% | 55,230 psi | 89% | 3041 fps | 97.7% |
| Norma 201 | <<locked>> | 86% | 53,243 psi | 85% | 2972 fps | 100% |
| Norma 202 | <<locked>> | 86% | 53,896 psi | 86% | 2976 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,738 psi | 89% | 3064 fps | 99.9% |
| Norma URP | <<locked>> | 98% | 53,345 psi | 86% | 3064 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 88% | 52,649 psi | 84% | 3028 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,985 psi | 90% | 3120 fps | 98.4% |
| Ramshot TAC | <<locked>> | 84% | 54,099 psi | 87% | 2999 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 53,693 psi | 86% | 3015 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,650 psi | 88% | 2982 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,810 psi | 57% | 1919 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,375 psi | 87% | 3009 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 53,229 psi | 85% | 3087 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 52,910 psi | 85% | 3123 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,186 psi | 87% | 3104 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 53,882 psi | 86% | 3133 fps | 99% |
| Rottweil R 901 | <<locked>> | 84% | 53,954 psi | 87% | 2956 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 53,780 psi | 86% | 2972 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,275 psi | 90% | 3058 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 53,040 psi | 85% | 2979 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,462 psi | 87% | 3009 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,404 psi | 87% | 3005 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,071 psi | 88% | 3012 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,230 psi | 89% | 3041 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,708 psi | 88% | 3071 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,057 psi | 90% | 3031 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 53,142 psi | 85% | 2999 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,911 psi | 88% | 2917 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,288 psi | 89% | 2913 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,592 psi | 88% | 2956 fps | 97.3% |
| Somchem S321 | <<locked>> | 82% | 54,781 psi | 88% | 3012 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,230 psi | 87% | 2913 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,738 psi | 89% | 3022 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 53,229 psi | 85% | 3005 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,503 psi | 83% | 3071 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 54,621 psi | 88% | 2881 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,274 psi | 89% | 2904 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 53,664 psi | 86% | 2940 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 54,520 psi | 87% | 2956 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,650 psi | 88% | 2986 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,115 psi | 90% | 3068 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 84% | 54,259 psi | 87% | 2982 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,275 psi | 90% | 3002 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 54,897 psi | 88% | 3068 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,511 psi | 70% | 2933 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 52,663 psi | 84% | 2989 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,128 psi | 87% | 3028 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 53,882 psi | 86% | 3081 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,360 psi | 57% | 2838 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 86% | 53,011 psi | 85% | 3005 fps | 99.9% |
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% | 48,863 psi | 78% | 2831 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,176 psi | 66% | 2740 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,805 psi | 78% | 2907 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 50,082 psi | 80% | 2884 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 38,957 psi | 62% | 2730 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 35,331 psi | 57% | 2703 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 45,136 psi | 72% | 2858 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 80% | 38,203 psi | 61% | 2694 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,297 psi | 76% | 2871 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 47,718 psi | 77% | 2861 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,205 psi | 66% | 2887 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,942 psi | 61% | 2720 fps | 98.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,799 psi | 65% | 2785 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,665 psi | 57% | 2726 fps | 95.3% |
| Alliant Reloder-17 | 57.9 gr | 80% | 32,764 psi | 53% | 2674 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 94% | 32,663 psi | 52% | 2667 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 38,551 psi | 62% | 2877 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,570 psi | 71% | 2861 fps | 98% |
| Bofors RP3 | <<locked>> | 80% | 37,507 psi | 60% | 2720 fps | 98.2% |
| Bofors RP7 | <<locked>> | 92% | 49,922 psi | 80% | 2923 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,863 psi | 78% | 2858 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,267 psi | 74% | 2890 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,213 psi | 82% | 3048 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 80% | 38,406 psi | 62% | 2723 fps | 95.6% |
| Hodgdon H414 | 65.1 gr | 92% | 46,876 psi | 75% | 2949 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 92% | 50,850 psi | 82% | 2979 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 45,600 psi | 73% | 2874 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,443 psi | 49% | 2552 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,568 psi | 67% | 2835 fps | 99% |
| Hodgdon Superformance | <<locked>> | 92% | 46,905 psi | 75% | 2972 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,266 psi | 42% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,758 psi | 70% | 2822 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 45,266 psi | 73% | 2867 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,103 psi | 64% | 2733 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 82% | 45,600 psi | 73% | 2815 fps | 95.2% |
| IMR 4350 | <<locked>> | 94% | 47,224 psi | 76% | 2894 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 45,774 psi | 73% | 2848 fps | 95.2% |
| IMR 4831 | <<locked>> | 88% | 36,709 psi | 59% | 2720 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 41,829 psi | 67% | 2822 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 80% | 47,297 psi | 76% | 2871 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 44,121 psi | 71% | 2835 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,136 psi | 72% | 2795 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 40,074 psi | 64% | 2740 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 39,653 psi | 64% | 2726 fps | 95% |
| Lovex S070 | <<locked>> | 92% | 45,759 psi | 73% | 2871 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 44,048 psi | 71% | 2808 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 44,541 psi | 71% | 2822 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,147 psi | 64% | 2776 fps | 98% |
| Norma URP | <<locked>> | 86% | 35,810 psi | 57% | 2713 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 39,900 psi | 64% | 2789 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 42,728 psi | 69% | 2874 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 47,253 psi | 76% | 2874 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,702 psi | 75% | 2894 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,068 psi | 82% | 2923 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,455 psi | 42% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 44,541 psi | 71% | 2828 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,192 psi | 69% | 2900 fps | 98.1% |
| ReloadSwiss RS 60 | 57.9 gr | 80% | 34,911 psi | 56% | 2749 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 37,884 psi | 61% | 2789 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 40,625 psi | 65% | 2861 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 47,747 psi | 77% | 2851 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,829 psi | 67% | 2756 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 35,201 psi | 56% | 2657 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 92% | 49,922 psi | 80% | 2923 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,653 psi | 64% | 2726 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,121 psi | 71% | 2835 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,074 psi | 64% | 2740 fps | 99% |
| Shooters World SW4350 | <<locked>> | 92% | 45,759 psi | 73% | 2871 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,405 psi | 58% | 2713 fps | 96.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,484 psi | 73% | 2848 fps | 97.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,700 psi | 70% | 2828 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,484 psi | 73% | 2766 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,826 psi | 61% | 2621 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 44,788 psi | 72% | 2785 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 51,329 psi | 82% | 2956 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,049 psi | 72% | 2762 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,339 psi | 73% | 2844 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 36,085 psi | 58% | 2667 fps | 97.3% |
| Somchem S365 | <<locked>> | 82% | 27,789 psi | 45% | 2526 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 51,372 psi | 82% | 2831 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,905 psi | 74% | 2759 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,495 psi | 67% | 2743 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,163 psi | 68% | 2749 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,360 psi | 55% | 2602 fps | 98.1% |
| Vihtavuori N160 | <<locked>> | 86% | 37,391 psi | 60% | 2717 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 47,427 psi | 76% | 2867 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 40,611 psi | 65% | 2736 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 36,796 psi | 59% | 2713 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 94% | 35,491 psi | 57% | 2753 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,516 psi | 49% | 2516 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 47,094 psi | 76% | 2910 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 47,079 psi | 75% | 2956 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,980 psi | 50% | 2694 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,236 psi | 69% | 2831 fps | 99% |
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 H&H Mag. loaded with the .308 | 150gr | Sako Powerhead Blade. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,153 fps. Alliant Reloder-16 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 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, Alliant Reloder-23, Alliant Reloder-26 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-17, ReloadSwiss RS 60, Hodgdon H414 rank at the top here: for .300 H&H Mag. with the .308 | 150gr | Sako Powerhead Blade 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.