Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 100gr | Barnes Solid bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and ReloadSwiss RS 52.
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 2015 | <<locked>> | 88% | 57,188 psi | 88% | 3340 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,782 psi | 86% | 3360 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,361 psi | 85% | 3350 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 57,754 psi | 89% | 3425 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 58,682 psi | 90% | 3448 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,140 psi | 79% | 3383 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 82% | 55,854 psi | 86% | 3274 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,275 psi | 87% | 3304 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,347 psi | 87% | 3428 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 96% | 57,435 psi | 88% | 3422 fps | 98.8% |
| ADI AR 2219 | <<locked>> | 82% | 57,450 psi | 88% | 3415 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,245 psi | 85% | 3379 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 88% | 55,361 psi | 85% | 3366 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,753 psi | 87% | 3507 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,956 psi | 86% | 3543 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,840 psi | 87% | 3442 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,565 psi | 87% | 3350 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 57,899 psi | 89% | 3474 fps | 99% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,821 psi | 77% | 3386 fps | 97.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 58,262 psi | 90% | 3573 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,564 psi | 85% | 3261 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,246 psi | 87% | 3432 fps | 98.4% |
| Bofors RP3 | <<locked>> | 96% | 57,957 psi | 89% | 3465 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 57,290 psi | 88% | 3369 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 58,508 psi | 90% | 3471 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,521 psi | 87% | 3514 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 84% | 55,956 psi | 86% | 3389 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 57,276 psi | 88% | 3415 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,230 psi | 85% | 3406 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 90% | 56,855 psi | 87% | 3445 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,948 psi | 71% | 3251 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,115 psi | 86% | 3471 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,882 psi | 54% | 2139 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 58,204 psi | 90% | 3445 fps | 99.5% |
| IMR 3031 | <<locked>> | 90% | 56,246 psi | 87% | 3438 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,594 psi | 87% | 3399 fps | 98.8% |
| IMR 4198 | <<locked>> | 84% | 56,333 psi | 87% | 3307 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,544 psi | 75% | 3310 fps | 96.9% |
| IMR 4895 | <<locked>> | 92% | 55,463 psi | 85% | 3445 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 88% | 55,245 psi | 85% | 3379 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 84% | 55,535 psi | 85% | 3363 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 90% | 55,854 psi | 86% | 3406 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,173 psi | 86% | 3353 fps | 99.1% |
| Lovex S062 | <<locked>> | 94% | 56,391 psi | 87% | 3402 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,521 psi | 85% | 3376 fps | 96.8% |
| Norma 201 | <<locked>> | 92% | 58,581 psi | 90% | 3432 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 55,477 psi | 85% | 3383 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,971 psi | 88% | 3455 fps | 99.2% |
| Norma URPᴾ | <<locked>> | 100% | 50,473 psi | 78% | 3373 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 94% | 57,914 psi | 89% | 3481 fps | 99.2% |
| Ramshot TAC | <<locked>> | 88% | 56,057 psi | 86% | 3383 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,434 psi | 85% | 3412 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,695 psi | 87% | 3376 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,215 psi | 54% | 2188 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 58,465 psi | 90% | 3425 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,883 psi | 86% | 3383 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 58,233 psi | 90% | 3547 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 57,957 psi | 89% | 3586 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,039 psi | 79% | 3402 fps | 97.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,445 psi | 79% | 3422 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 88% | 55,796 psi | 86% | 3366 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,419 psi | 85% | 3366 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 98% | 57,479 psi | 88% | 3448 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,521 psi | 85% | 3376 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,854 psi | 86% | 3406 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 56,391 psi | 87% | 3402 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 58,392 psi | 90% | 3389 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 58,813 psi | 90% | 3048 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 57,769 psi | 89% | 3422 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,898 psi | 86% | 3458 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 57,421 psi | 88% | 3376 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 58,001 psi | 89% | 3419 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 58,508 psi | 90% | 3455 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,652 psi | 87% | 3317 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,927 psi | 88% | 3307 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 57,043 psi | 88% | 3419 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 56,072 psi | 86% | 3314 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 57,508 psi | 88% | 3412 fps | 99.2% |
| Somchem S355 | <<locked>> | 98% | 57,696 psi | 89% | 3448 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,223 psi | 70% | 3310 fps | 99% |
| Vihtavuori N130 | <<locked>> | 86% | 56,420 psi | 87% | 3287 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,652 psi | 87% | 3301 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 58,189 psi | 90% | 3392 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,985 psi | 86% | 3353 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,985 psi | 86% | 3369 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,243 psi | 82% | 3376 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 88% | 55,927 psi | 86% | 3379 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 94% | 57,899 psi | 89% | 3399 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,214 psi | 80% | 3373 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,404 psi | 84% | 3360 fps | 99.4% |
| Winchester 748 | <<locked>> | 88% | 55,593 psi | 86% | 3432 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 58,320 psi | 90% | 3458 fps | 99.6% |
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 2015 | <<locked>> | 80% | 44,295 psi | 68% | 3117 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,443 psi | 75% | 3228 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 37,014 psi | 57% | 3002 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 43,801 psi | 67% | 3173 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 34,954 psi | 54% | 2976 fps | 98.3% |
| Accurate 4350 | <<locked>> | 96% | 44,309 psi | 68% | 3245 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 52,518 psi | 81% | 3222 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,895 psi | 81% | 3248 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,886 psi | 63% | 3110 fps | 96% |
| ADI AR 2208 | <<locked>> | 86% | 41,930 psi | 65% | 3110 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 53,577 psi | 82% | 3353 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,931 psi | 66% | 3133 fps | 97.8% |
| Alliant AR-Comp | <<locked>> | 80% | 42,177 psi | 65% | 3146 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,893 psi | 77% | 3373 fps | 98.6% |
| Alliant Power Pro 2000-MR | 55.6 gr | 84% | 42,293 psi | 65% | 3245 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 36,347 psi | 56% | 3012 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,777 psi | 77% | 3238 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 41,684 psi | 64% | 3146 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 43,772 psi | 67% | 3251 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 88% | 38,595 psi | 59% | 3146 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,880 psi | 80% | 3202 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,873 psi | 66% | 3166 fps | 95.4% |
| Bofors RP3 | <<locked>> | 82% | 35,940 psi | 55% | 3009 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,759 psi | 69% | 3133 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,408 psi | 64% | 3140 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,353 psi | 70% | 3294 fps | 96.7% |
| Hodgdon H322 | <<locked>> | 80% | 48,907 psi | 75% | 3268 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,024 psi | 77% | 3291 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 45,194 psi | 70% | 3205 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 41,234 psi | 63% | 3127 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 37,840 psi | 58% | 3061 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,115 psi | 57% | 3071 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 40% | 1919 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,537 psi | 61% | 3068 fps | 96.1% |
| IMR 3031 | <<locked>> | 80% | 40,277 psi | 62% | 3140 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 41,292 psi | 64% | 3094 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 50,111 psi | 77% | 3209 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 42,366 psi | 65% | 3179 fps | 95.2% |
| IMR 4895 | <<locked>> | 82% | 40,059 psi | 62% | 3120 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 42,931 psi | 66% | 3133 fps | 97.8% |
| Lovex D073.5 | <<locked>> | 80% | 48,472 psi | 75% | 3238 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 39,610 psi | 61% | 3087 fps | 98.5% |
| Lovex S060 | <<locked>> | 80% | 41,220 psi | 63% | 3051 fps | 96.2% |
| Lovex S062 | <<locked>> | 80% | 36,172 psi | 56% | 2976 fps | 96% |
| Lovex S065 | <<locked>> | 96% | 49,110 psi | 76% | 3255 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 40,030 psi | 62% | 3064 fps | 97.2% |
| Norma 202 | <<locked>> | 80% | 40,016 psi | 62% | 3077 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 38,493 psi | 59% | 3068 fps | 95.2% |
| Norma URP | <<locked>> | 96% | 44,353 psi | 68% | 3241 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 84% | 40,741 psi | 63% | 3140 fps | 95.8% |
| Ramshot TAC | <<locked>> | 84% | 49,037 psi | 75% | 3248 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,221 psi | 65% | 3143 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,456 psi | 71% | 3182 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,063 psi | 40% | 1962 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,051 psi | 74% | 3241 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 52,272 psi | 80% | 3317 fps | 95.3% |
| ReloadSwiss RS 52 | 52.7 gr | 82% | 40,872 psi | 63% | 3196 fps | 95.2% |
| ReloadSwiss RS 60 | 53.5 gr | 82% | 33,576 psi | 52% | 3018 fps | 96.2% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 44,266 psi | 68% | 3261 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 48,037 psi | 74% | 3346 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 43,830 psi | 67% | 3133 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 38,043 psi | 59% | 3005 fps | 96.6% |
| Rottweil R 903 | <<locked>> | 84% | 35,998 psi | 55% | 3002 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 49,110 psi | 76% | 3255 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,610 psi | 61% | 3087 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 36,172 psi | 56% | 2976 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,966 psi | 78% | 3258 fps | 99% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 55,622 psi | 86% | 3005 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 54,099 psi | 83% | 3360 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 39,769 psi | 61% | 3123 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,749 psi | 78% | 3268 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 47,036 psi | 72% | 3215 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,436 psi | 61% | 3068 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,553 psi | 64% | 3035 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,316 psi | 53% | 2864 fps | 98.7% |
| Somchem S321 | <<locked>> | 80% | 46,238 psi | 71% | 3222 fps | 98.8% |
| Somchem S335 | <<locked>> | 80% | 41,104 psi | 63% | 3035 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 40,625 psi | 63% | 3081 fps | 95.8% |
| Somchem S355 | <<locked>> | 84% | 36,941 psi | 57% | 3012 fps | 95.3% |
| Somchem S365 | <<locked>> | 92% | 34,577 psi | 53% | 3038 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 47,021 psi | 72% | 3130 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,742 psi | 64% | 3041 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,130 psi | 57% | 3005 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 37,884 psi | 58% | 3002 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 32,837 psi | 51% | 2877 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 94% | 43,569 psi | 67% | 3182 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 42,873 psi | 66% | 3127 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 80% | 36,550 psi | 56% | 2979 fps | 98.3% |
| Vihtavuori N550 | <<locked>> | 96% | 45,803 psi | 70% | 3248 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 36,187 psi | 56% | 2963 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 42,192 psi | 65% | 3169 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,798 psi | 60% | 3068 fps | 96.1% |
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 110 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 100gr | Barnes Solid. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,586 fps; across all powders the maximum-charge window runs from 2,139 fps to 3,586 fps. Accurate 4350 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 Power Pro 2000-MR, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 100gr | Barnes Solid they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Alliant Reloder-26 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.