Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 155.5gr | Berger Fullbore Target bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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>> | 84% | 54,549 psi | 87% | 2920 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 53,824 psi | 86% | 2927 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,226 psi | 79% | 2943 fps | 98.2% |
| Accurate 4064 | <<locked>> | 86% | 54,708 psi | 88% | 2972 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,100 psi | 88% | 3068 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 53,954 psi | 87% | 2995 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,288 psi | 89% | 3002 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 52,866 psi | 85% | 3045 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,159 psi | 90% | 2999 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,186 psi | 87% | 3127 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,738 psi | 89% | 3028 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,101 psi | 90% | 3051 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,985 psi | 90% | 3130 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,432 psi | 86% | 3100 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,535 psi | 89% | 3094 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,267 psi | 74% | 2972 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,524 psi | 65% | 2867 fps | 96.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,707 psi | 85% | 3159 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,041 psi | 87% | 3015 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 53,055 psi | 85% | 2989 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 56,159 psi | 90% | 3018 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,188 psi | 90% | 3028 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 53,621 psi | 86% | 3002 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 90% | 55,288 psi | 89% | 3084 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 94% | 55,709 psi | 89% | 3048 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 82% | 54,592 psi | 88% | 3009 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,057 psi | 90% | 3048 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,882 psi | 88% | 3048 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,172 psi | 87% | 3097 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 58% | 1886 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,752 psi | 88% | 2995 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,650 psi | 86% | 2969 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,143 psi | 87% | 2979 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,391 psi | 90% | 3002 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 53,548 psi | 86% | 2992 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,389 psi | 87% | 2995 fps | 98.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,202 psi | 90% | 3068 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 53,969 psi | 87% | 3025 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,159 psi | 90% | 2999 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,259 psi | 87% | 2976 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,405 psi | 90% | 2976 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,853 psi | 88% | 2982 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,389 psi | 87% | 2992 fps | 99.2% |
| Lovex S070 | <<locked>> | 94% | 55,535 psi | 89% | 3031 fps | 98.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,886 psi | 66% | 2782 fps | 96.3% |
| Norma 201 | <<locked>> | 84% | 56,347 psi | 90% | 2999 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,374 psi | 86% | 2940 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,390 psi | 89% | 3035 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,041 psi | 87% | 3041 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 51,996 psi | 83% | 3110 fps | 97.9% |
| Norma URP | <<locked>> | 94% | 53,969 psi | 87% | 3054 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 56,275 psi | 90% | 3064 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,260 psi | 90% | 3104 fps | 99.2% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,095 psi | 77% | 2972 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,680 psi | 59% | 1932 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,751 psi | 86% | 2986 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,185 psi | 85% | 3061 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,142 psi | 85% | 3100 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,056 psi | 88% | 3091 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,809 psi | 86% | 3120 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 84% | 53,548 psi | 86% | 2943 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,113 psi | 85% | 2986 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,520 psi | 87% | 3074 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 92% | 56,159 psi | 90% | 3018 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,389 psi | 87% | 2992 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,259 psi | 87% | 2976 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,853 psi | 88% | 2982 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,405 psi | 89% | 3035 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,592 psi | 88% | 3045 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,317 psi | 89% | 3002 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,927 psi | 90% | 3022 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,795 psi | 86% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,491 psi | 87% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,201 psi | 87% | 2940 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,867 psi | 86% | 3071 fps | 96.9% |
| Somchem S335 | <<locked>> | 82% | 53,490 psi | 86% | 2874 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,984 psi | 88% | 2989 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,272 psi | 85% | 2982 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 56,391 psi | 90% | 3114 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,347 psi | 89% | 3051 fps | 97.9% |
| Unknown powder | <<locked>> | 92% | 54,563 psi | 87% | 3058 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 84% | 53,795 psi | 86% | 2858 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,388 psi | 86% | 2910 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,301 psi | 85% | 2913 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,694 psi | 88% | 2963 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,288 psi | 89% | 3031 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 84% | 53,026 psi | 85% | 2940 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,506 psi | 89% | 3077 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,590 psi | 83% | 3051 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,072 psi | 90% | 3018 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,288 psi | 89% | 3084 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,611 psi | 67% | 3002 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,925 psi | 86% | 3015 fps | 96.6% |
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% | 47,877 psi | 77% | 2822 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 44,295 psi | 71% | 2756 fps | 95.2% |
| Accurate 3100 | <<locked>> | 92% | 37,246 psi | 60% | 2703 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 45,324 psi | 73% | 2822 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,866 psi | 54% | 2641 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 50,662 psi | 81% | 2943 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,105 psi | 69% | 2785 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 49,443 psi | 79% | 2982 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,707 psi | 85% | 2943 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,949 psi | 75% | 2992 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,337 psi | 69% | 2812 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,209 psi | 74% | 2877 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,591 psi | 54% | 2654 fps | 95.7% |
| Alliant Reloder-17 | 62.2 gr | 80% | 37,695 psi | 60% | 2785 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 48,747 psi | 78% | 2969 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,559 psi | 47% | 2562 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 98% | 38,000 psi | 61% | 2802 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,200 psi | 55% | 2749 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,473 psi | 81% | 2953 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 43,395 psi | 70% | 2818 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 43,801 psi | 70% | 2792 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,475 psi | 84% | 2972 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,845 psi | 70% | 2822 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 82% | 41,916 psi | 67% | 2831 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 46,296 psi | 74% | 2881 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 51,184 psi | 82% | 2953 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,067 psi | 50% | 2549 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,904 psi | 72% | 2874 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 43,482 psi | 70% | 2890 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 43% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,455 psi | 73% | 2835 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 47,398 psi | 76% | 2871 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,380 psi | 68% | 2762 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,669 psi | 67% | 2723 fps | 95.3% |
| IMR 4350 | <<locked>> | 88% | 44,208 psi | 71% | 2822 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,409 psi | 68% | 2766 fps | 95.4% |
| IMR 4831 | <<locked>> | 84% | 33,953 psi | 54% | 2628 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 47,398 psi | 76% | 2910 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 52,707 psi | 85% | 2943 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,821 psi | 81% | 2920 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,922 psi | 80% | 2867 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 45,397 psi | 73% | 2822 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 37,521 psi | 60% | 2657 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 40,437 psi | 65% | 2743 fps | 95.2% |
| Lovex S071 | <<locked>> | 98% | 38,116 psi | 61% | 2723 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 49,748 psi | 80% | 2890 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,198 psi | 80% | 2890 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,585 psi | 73% | 2864 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 50,502 psi | 81% | 2979 fps | 95.7% |
| Norma MRP | <<locked>> | 94% | 42,308 psi | 68% | 2913 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 34,011 psi | 55% | 2644 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 45,701 psi | 73% | 2884 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 37,681 psi | 60% | 2743 fps | 95% |
| Ramshot Magnum | <<locked>> | 98% | 44,599 psi | 72% | 2904 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,354 psi | 44% | 1729 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,005 psi | 71% | 2802 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,719 psi | 80% | 2999 fps | 99.7% |
| ReloadSwiss RS 60 | 62.2 gr | 80% | 40,089 psi | 64% | 2854 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,649 psi | 54% | 2657 fps | 95.1% |
| ReloadSwiss RS 70 | 64.8 gr | 82% | 35,505 psi | 57% | 2723 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 47,239 psi | 76% | 2838 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,814 psi | 65% | 2759 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 96% | 47,776 psi | 77% | 2953 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 84% | 43,801 psi | 70% | 2792 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,521 psi | 60% | 2657 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,821 psi | 81% | 2920 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,397 psi | 73% | 2822 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 40,335 psi | 65% | 2743 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,872 psi | 67% | 2812 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,648 psi | 83% | 2940 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,255 psi | 79% | 2910 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,546 psi | 81% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,525 psi | 68% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,698 psi | 67% | 2707 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 47,210 psi | 76% | 2949 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 50,430 psi | 81% | 2828 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,372 psi | 82% | 2930 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,423 psi | 66% | 2762 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 30,516 psi | 49% | 2595 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 45,397 psi | 73% | 2874 fps | 95.8% |
| Unknown powder | <<locked>> | 80% | 36,695 psi | 59% | 2700 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 80% | 47,776 psi | 77% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,065 psi | 75% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,978 psi | 75% | 2812 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,389 psi | 57% | 2605 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 80% | 36,898 psi | 59% | 2680 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 80% | 46,659 psi | 75% | 2831 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,362 psi | 60% | 2723 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 86% | 32,314 psi | 52% | 2641 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,896 psi | 56% | 2618 fps | 98.2% |
| Winchester 760 | <<locked>> | 82% | 41,916 psi | 67% | 2831 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,949 psi | 45% | 2585 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 96% | 50,096 psi | 80% | 2953 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 109 powders for .300 Win. Mag. loaded with the .308 | 155.5gr | Berger Fullbore Target. Alliant Reloder-26 delivers the highest muzzle velocity at 3,159 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,159 fps. Accurate 3100 gives the best case fill at 100 %, and 109 of the 109 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 155.5 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. ReloadSwiss RS 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 Win. Mag. with the .308 | 155.5gr | Berger Fullbore Target they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.