Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 135gr | Atomic 29 HP bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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.
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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>> | 82% | 56,159 psi | 86% | 2884 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,506 psi | 85% | 2910 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,942 psi | 88% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,595 psi | 89% | 2969 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,282 psi | 71% | 2871 fps | 97.5% |
| Accurate 4064 | <<locked>> | 88% | 55,738 psi | 86% | 2966 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,898 psi | 86% | 3058 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 55,288 psi | 85% | 2992 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,333 psi | 87% | 2992 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,809 psi | 83% | 3031 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,609 psi | 89% | 2992 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,434 psi | 85% | 2910 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,376 psi | 85% | 3120 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,695 psi | 87% | 3015 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,203 psi | 88% | 3041 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,811 psi | 87% | 3117 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 58,421 psi | 90% | 3153 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,721 psi | 81% | 3018 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,656 psi | 67% | 2900 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,530 psi | 76% | 3084 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,376 psi | 85% | 3009 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 57,754 psi | 89% | 3035 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,406 psi | 88% | 3012 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,695 psi | 86% | 2923 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,522 psi | 88% | 3022 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 58,494 psi | 90% | 3051 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 96% | 58,523 psi | 90% | 3110 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 94% | 58,639 psi | 90% | 3068 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 84% | 55,883 psi | 86% | 3002 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,000 psi | 88% | 3038 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,767 psi | 86% | 3038 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,390 psi | 85% | 3091 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,810 psi | 55% | 1850 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,232 psi | 88% | 3005 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,217 psi | 86% | 2982 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,014 psi | 86% | 2979 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,463 psi | 85% | 2953 fps | 98.3% |
| IMR 4350 | <<locked>> | 98% | 57,943 psi | 89% | 3035 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,796 psi | 86% | 2989 fps | 98.3% |
| IMR 4831 | <<locked>> | 98% | 56,231 psi | 87% | 3045 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 58,697 psi | 90% | 3071 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,609 psi | 89% | 2992 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,622 psi | 86% | 2969 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,885 psi | 89% | 2966 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,970 psi | 86% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,347 psi | 85% | 2979 fps | 99.2% |
| Lovex S070 | <<locked>> | 96% | 56,463 psi | 87% | 3018 fps | 98.6% |
| Norma 201 | <<locked>> | 86% | 57,595 psi | 89% | 2989 fps | 100% |
| Norma 202 | <<locked>> | 86% | 58,320 psi | 90% | 2986 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,449 psi | 87% | 3025 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,056 psi | 85% | 3031 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 48,994 psi | 75% | 3031 fps | 97.2% |
| Norma URP | <<locked>> | 98% | 58,479 psi | 90% | 3097 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 57,464 psi | 88% | 3054 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,116 psi | 88% | 3094 fps | 99.2% |
| Ramshot TAC | <<locked>> | 84% | 58,088 psi | 89% | 3018 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,986 psi | 89% | 3035 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 58,320 psi | 90% | 2992 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,390 psi | 56% | 1896 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 58,610 psi | 90% | 3031 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 58,189 psi | 90% | 3114 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 57,914 psi | 89% | 3146 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,811 psi | 86% | 3081 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,839 psi | 84% | 3107 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 58,392 psi | 90% | 2966 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 58,059 psi | 89% | 2986 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,537 psi | 89% | 3025 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,837 psi | 80% | 3002 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 94% | 57,406 psi | 88% | 3012 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,347 psi | 85% | 2979 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,622 psi | 86% | 2969 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,970 psi | 86% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,463 psi | 87% | 3018 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,753 psi | 86% | 3035 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,695 psi | 87% | 2995 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,348 psi | 88% | 3015 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 58,740 psi | 90% | 2917 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,883 psi | 86% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,332 psi | 85% | 2930 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,343 psi | 79% | 2999 fps | 96.2% |
| Somchem S335 | <<locked>> | 86% | 58,218 psi | 90% | 2913 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,434 psi | 87% | 2986 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,638 psi | 89% | 3022 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,971 psi | 88% | 3097 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,576 psi | 81% | 2982 fps | 97.3% |
| Vihtavuori N130 | <<locked>> | 82% | 58,117 psi | 89% | 2871 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 55,695 psi | 86% | 2854 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 58,334 psi | 90% | 2946 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 58,682 psi | 90% | 2959 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,550 psi | 85% | 2946 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,116 psi | 88% | 3035 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 84% | 58,378 psi | 90% | 2992 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,058 psi | 88% | 2959 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,289 psi | 87% | 3045 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,762 psi | 75% | 2982 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,290 psi | 88% | 3012 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 58,813 psi | 90% | 3045 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,143 psi | 85% | 3058 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,363 psi | 61% | 2927 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,392 psi | 88% | 3025 fps | 100% |
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% | 52,663 psi | 81% | 2835 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,774 psi | 70% | 2762 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,113 psi | 82% | 2923 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,266 psi | 68% | 2736 fps | 95% |
| Accurate 3100 | <<locked>> | 94% | 37,623 psi | 58% | 2697 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 43,279 psi | 67% | 2762 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 34,418 psi | 53% | 2641 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 48,718 psi | 75% | 2881 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 41,437 psi | 64% | 2723 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 98% | 50,415 psi | 78% | 2972 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,807 psi | 78% | 2884 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,112 psi | 80% | 2867 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,020 psi | 69% | 2930 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,394 psi | 64% | 2749 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,367 psi | 68% | 2818 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,213 psi | 50% | 2595 fps | 95% |
| Alliant Reloder-17 | 50.4 gr | 80% | 36,071 psi | 55% | 2726 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 98% | 49,472 psi | 76% | 2959 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,037 psi | 46% | 2559 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,693 psi | 53% | 2746 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,370 psi | 74% | 2890 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 41,307 psi | 64% | 2756 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 44,788 psi | 69% | 2785 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,359 psi | 81% | 2867 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,444 psi | 78% | 2917 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,105 psi | 65% | 2762 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 86% | 42,090 psi | 65% | 2815 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 88% | 48,501 psi | 75% | 2897 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 49,255 psi | 76% | 2894 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,718 psi | 46% | 2493 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,687 psi | 70% | 2871 fps | 99.9% |
| Hodgdon Superformance | 58.6 gr | 88% | 44,570 psi | 69% | 2890 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,789 psi | 41% | 1657 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,282 psi | 73% | 2844 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 49,414 psi | 76% | 2881 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,540 psi | 67% | 2762 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,992 psi | 71% | 2785 fps | 96.4% |
| IMR 4350 | <<locked>> | 90% | 45,034 psi | 69% | 2812 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,482 psi | 67% | 2762 fps | 95.6% |
| IMR 4831 | <<locked>> | 82% | 33,330 psi | 51% | 2595 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 45,498 psi | 70% | 2848 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 50,807 psi | 78% | 2884 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,544 psi | 75% | 2861 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,254 psi | 74% | 2812 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 43,598 psi | 67% | 2762 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 38,363 psi | 59% | 2654 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 41,365 psi | 64% | 2740 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 47,819 psi | 74% | 2831 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,124 psi | 74% | 2831 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,743 psi | 67% | 2805 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 51,590 psi | 79% | 2972 fps | 95.8% |
| Norma MRP | <<locked>> | 96% | 42,757 psi | 66% | 2904 fps | 95.4% |
| Norma URP | <<locked>> | 82% | 34,621 psi | 53% | 2641 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 43,743 psi | 67% | 2822 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 38,435 psi | 59% | 2740 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 50,894 psi | 78% | 2900 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,676 psi | 78% | 2920 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 54,911 psi | 84% | 2940 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,166 psi | 42% | 1696 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,395 psi | 65% | 2746 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,413 psi | 73% | 2936 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,377 psi | 59% | 2795 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,214 psi | 53% | 2657 fps | 95.4% |
| ReloadSwiss RS 70 | 53.7 gr | 84% | 36,245 psi | 56% | 2720 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 51,764 psi | 80% | 2867 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,484 psi | 70% | 2779 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 38,957 psi | 60% | 2700 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 48,457 psi | 75% | 2940 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 86% | 44,788 psi | 69% | 2785 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,363 psi | 59% | 2654 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,544 psi | 75% | 2861 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,598 psi | 67% | 2762 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 41,365 psi | 64% | 2740 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,958 psi | 61% | 2753 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,371 psi | 76% | 2874 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,297 psi | 73% | 2851 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,791 psi | 75% | 2772 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,944 psi | 63% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,670 psi | 66% | 2703 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,993 psi | 74% | 2936 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 48,588 psi | 75% | 2772 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,226 psi | 76% | 2871 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 39,624 psi | 61% | 2703 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 29,109 psi | 45% | 2533 fps | 97.2% |
| Somchem S385 | <<locked>> | 96% | 46,151 psi | 71% | 2867 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 54,868 psi | 84% | 2828 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 49,240 psi | 76% | 2759 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,252 psi | 70% | 2756 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,701 psi | 70% | 2766 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,695 psi | 58% | 2635 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 33,678 psi | 52% | 2585 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 50,995 psi | 78% | 2881 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,193 psi | 68% | 2756 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,330 psi | 51% | 2589 fps | 95% |
| Vihtavuori N555 | <<locked>> | 88% | 32,677 psi | 50% | 2638 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,373 psi | 51% | 2562 fps | 97.6% |
| Winchester 748 | <<locked>> | 80% | 51,387 psi | 79% | 2933 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 42,090 psi | 65% | 2815 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,326 psi | 44% | 2579 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,934 psi | 72% | 2854 fps | 99.8% |
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 119 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 135gr | Atomic 29 HP. Alliant Reloder-17 delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,153 fps. Accurate 3100 gives the best case fill at 100 %, and 119 of the 119 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 135gr | Atomic 29 HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Alliant Reloder-22 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.