Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 100gr | Sierra VarmintKing bullet and 95 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 Alliant Reloder-17.
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>> | 86% | 55,883 psi | 86% | 3330 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 58,088 psi | 89% | 3409 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 58,117 psi | 89% | 3399 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,420 psi | 87% | 3415 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 58,030 psi | 89% | 3445 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,302 psi | 84% | 3451 fps | 98.2% |
| Accurate LT-30 | <<locked>> | 82% | 57,667 psi | 89% | 3317 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 58,073 psi | 89% | 3350 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 58,711 psi | 90% | 3484 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 94% | 56,188 psi | 86% | 3415 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 88% | 57,653 psi | 89% | 3432 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 88% | 58,131 psi | 89% | 3415 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,622 psi | 86% | 3497 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,853 psi | 84% | 3540 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,028 psi | 86% | 3442 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 84% | 58,711 psi | 90% | 3396 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,710 psi | 87% | 3465 fps | 99% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,243 psi | 80% | 3455 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 57,363 psi | 88% | 3570 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 57,696 psi | 89% | 3304 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,274 psi | 85% | 3428 fps | 98.5% |
| Bofors RP3 | <<locked>> | 94% | 56,956 psi | 88% | 3461 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,028 psi | 86% | 3360 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 88% | 57,276 psi | 88% | 3461 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,245 psi | 85% | 3501 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 84% | 58,421 psi | 90% | 3438 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,970 psi | 86% | 3402 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 57,972 psi | 89% | 3465 fps | 98.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 57,537 psi | 89% | 3507 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 88% | 55,608 psi | 86% | 3435 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,399 psi | 74% | 3314 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,056 psi | 85% | 3465 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,070 psi | 54% | 2162 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,985 psi | 88% | 3438 fps | 99.6% |
| IMR 3031 | <<locked>> | 88% | 55,274 psi | 85% | 3432 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,753 psi | 86% | 3399 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,970 psi | 86% | 3366 fps | 95.8% |
| IMR 4198 | <<locked>> | 84% | 58,595 psi | 90% | 3350 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,416 psi | 79% | 3376 fps | 97.8% |
| IMR 4895 | <<locked>> | 92% | 58,160 psi | 89% | 3504 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 88% | 57,653 psi | 89% | 3432 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 84% | 58,276 psi | 90% | 3419 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 58,740 psi | 90% | 3461 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 58,160 psi | 89% | 3402 fps | 99.5% |
| Lovex S062 | <<locked>> | 94% | 58,784 psi | 90% | 3455 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 58,349 psi | 90% | 3438 fps | 97.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,724 psi | 86% | 3409 fps | 96% |
| Norma 201 | <<locked>> | 90% | 57,188 psi | 88% | 3422 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 58,001 psi | 89% | 3432 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,869 psi | 86% | 3448 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 53,403 psi | 82% | 3435 fps | 98% |
| Ramshot Big Game | <<locked>> | 92% | 56,797 psi | 87% | 3474 fps | 99.3% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,431 psi | 81% | 3419 fps | 96.1% |
| Ramshot TAC | <<locked>> | 88% | 58,595 psi | 90% | 3445 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 57,914 psi | 89% | 3465 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,288 psi | 85% | 3366 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,433 psi | 55% | 2211 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 57,203 psi | 88% | 3419 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 58,668 psi | 90% | 3445 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 57,188 psi | 88% | 3540 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 56,884 psi | 88% | 3579 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,114 psi | 83% | 3468 fps | 97.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,215 psi | 83% | 3494 fps | 97.5% |
| Rottweil R 901 | <<locked>> | 88% | 58,233 psi | 90% | 3415 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 57,856 psi | 89% | 3422 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 56,507 psi | 87% | 3442 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 58,349 psi | 90% | 3438 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 58,740 psi | 90% | 3461 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 58,784 psi | 90% | 3455 fps | 99.9% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,724 psi | 86% | 3409 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,971 psi | 88% | 3379 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 58,595 psi | 90% | 3514 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,028 psi | 86% | 3366 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 56,898 psi | 88% | 3412 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 57,217 psi | 88% | 3445 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,419 psi | 85% | 3310 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,709 psi | 86% | 3301 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 55,666 psi | 86% | 3409 fps | 99.9% |
| Somchem S335 | <<locked>> | 90% | 58,146 psi | 89% | 3356 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,420 psi | 87% | 3406 fps | 99.2% |
| Somchem S355 | <<locked>> | 96% | 56,710 psi | 87% | 3442 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,659 psi | 73% | 3369 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 86% | 58,566 psi | 90% | 3330 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,521 psi | 85% | 3294 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 57,334 psi | 88% | 3389 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 58,610 psi | 90% | 3402 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 58,682 psi | 90% | 3422 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,130 psi | 86% | 3438 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 88% | 58,363 psi | 90% | 3432 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 56,826 psi | 87% | 3392 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,230 psi | 85% | 3442 fps | 98.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,130 psi | 88% | 3419 fps | 99.8% |
| Winchester 748 | <<locked>> | 88% | 58,363 psi | 90% | 3488 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 57,841 psi | 89% | 3514 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 90% | 57,305 psi | 88% | 3455 fps | 99.7% |
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% | 46,282 psi | 71% | 3166 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,749 psi | 78% | 3284 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,914 psi | 60% | 3051 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,774 psi | 70% | 3222 fps | 99.6% |
| Accurate 4064 | <<locked>> | 80% | 36,753 psi | 57% | 3028 fps | 98.9% |
| Accurate 4350 | <<locked>> | 94% | 43,816 psi | 67% | 3241 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 54,346 psi | 84% | 3264 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 54,737 psi | 84% | 3294 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 42,554 psi | 65% | 3159 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 84% | 41,075 psi | 63% | 3104 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,599 psi | 69% | 3182 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 80% | 44,382 psi | 68% | 3192 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,967 psi | 80% | 3428 fps | 99.1% |
| Alliant Power Pro 2000-MR | 56.7 gr | 82% | 41,495 psi | 64% | 3238 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,694 psi | 55% | 2999 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,996 psi | 80% | 3284 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 40,959 psi | 63% | 3140 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 94% | 43,192 psi | 66% | 3251 fps | 95.8% |
| Alliant Reloder-17 | 58.5 gr | 86% | 37,797 psi | 58% | 3136 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 54,012 psi | 83% | 3248 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,945 psi | 65% | 3153 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 35,273 psi | 54% | 2999 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,369 psi | 71% | 3182 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,439 psi | 67% | 3196 fps | 98.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,805 psi | 74% | 3356 fps | 97.5% |
| Hodgdon H322 | <<locked>> | 80% | 51,155 psi | 79% | 3320 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,257 psi | 80% | 3340 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 44,338 psi | 68% | 3199 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 98% | 53,867 psi | 83% | 3442 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 42,902 psi | 66% | 3176 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 37,333 psi | 57% | 3061 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,885 psi | 60% | 3127 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,020 psi | 40% | 1939 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,176 psi | 63% | 3120 fps | 97% |
| IMR 3031 | <<locked>> | 80% | 42,366 psi | 65% | 3192 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 40,567 psi | 62% | 3087 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 52,533 psi | 81% | 3304 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 52,069 psi | 80% | 3251 fps | 100% |
| IMR 4831 | <<locked>> | 94% | 41,959 psi | 65% | 3179 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 39,233 psi | 60% | 3110 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 80% | 44,599 psi | 69% | 3182 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 80% | 50,691 psi | 78% | 3287 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 41,597 psi | 64% | 3143 fps | 99.1% |
| Lovex S060 | <<locked>> | 80% | 42,786 psi | 66% | 3100 fps | 97% |
| Lovex S062 | <<locked>> | 80% | 37,826 psi | 58% | 3028 fps | 96.9% |
| Lovex S065 | <<locked>> | 94% | 48,385 psi | 74% | 3251 fps | 95.5% |
| Lovex S070 | <<locked>> | 98% | 52,199 psi | 80% | 3346 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 41,742 psi | 64% | 3114 fps | 97.9% |
| Norma 202 | <<locked>> | 80% | 41,989 psi | 65% | 3133 fps | 99.5% |
| Norma 203B | <<locked>> | 80% | 37,739 psi | 58% | 3058 fps | 95.3% |
| Norma URP | <<locked>> | 94% | 43,598 psi | 67% | 3235 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 82% | 40,045 psi | 62% | 3133 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 98% | 49,124 psi | 76% | 3353 fps | 95.2% |
| Ramshot TAC | <<locked>> | 82% | 47,892 psi | 74% | 3238 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,179 psi | 68% | 3199 fps | 97.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,341 psi | 74% | 3235 fps | 98% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,194 psi | 40% | 1982 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,038 psi | 77% | 3291 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 51,358 psi | 79% | 3310 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,016 psi | 62% | 3182 fps | 95.3% |
| ReloadSwiss RS 60 | 54.5 gr | 80% | 32,953 psi | 51% | 3009 fps | 96.3% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 43,598 psi | 67% | 3255 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 47,253 psi | 73% | 3346 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 45,513 psi | 70% | 3182 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 39,755 psi | 61% | 3058 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 82% | 35,360 psi | 54% | 2992 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 48,385 psi | 74% | 3251 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,597 psi | 64% | 3143 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 37,826 psi | 58% | 3028 fps | 96.9% |
| Shooters World SW4350 | <<locked>> | 98% | 52,199 psi | 80% | 3346 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,069 psi | 82% | 3310 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 39,117 psi | 60% | 3117 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,707 psi | 81% | 3314 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 46,064 psi | 71% | 3205 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,176 psi | 63% | 3120 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,105 psi | 66% | 3081 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,694 psi | 55% | 2910 fps | 99.2% |
| Somchem S321 | <<locked>> | 80% | 48,501 psi | 75% | 3274 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 42,772 psi | 66% | 3081 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 42,714 psi | 66% | 3140 fps | 96.8% |
| Somchem S355 | <<locked>> | 82% | 36,376 psi | 56% | 3009 fps | 95.4% |
| Somchem S365 | <<locked>> | 90% | 34,171 psi | 53% | 3038 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 48,689 psi | 75% | 3173 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,323 psi | 67% | 3084 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,870 psi | 60% | 3051 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,798 psi | 61% | 3054 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 32,416 psi | 50% | 2871 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 92% | 42,873 psi | 66% | 3179 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 44,730 psi | 69% | 3179 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 80% | 38,232 psi | 59% | 3028 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 94% | 45,136 psi | 69% | 3241 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 35,520 psi | 55% | 2959 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 44,106 psi | 68% | 3222 fps | 99% |
| Winchester 760 | <<locked>> | 98% | 53,867 psi | 83% | 3442 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,524 psi | 62% | 3120 fps | 96.9% |
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 | Sierra VarmintKing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,579 fps; across all powders the maximum-charge window runs from 2,162 fps to 3,579 fps. Accurate 3100 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 51–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.284" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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, Alliant Reloder-17 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 100gr | Sierra VarmintKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-26, Hodgdon H4350 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.