Load Specifications
Bullet:.284 | 140gr | Speer TBBC
Bullet Manufacturer:Speer
Bullet Weight:140 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Case Length (l3):2.026"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:72.6 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:12.0
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 140gr | Speer TBBC bullet and 104 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-16 and Hodgdon Superformance.
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>> | 82% | 58,334 psi | 90% | 2864 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 58,262 psi | 90% | 2900 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,231 psi | 87% | 2910 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,298 psi | 76% | 2884 fps | 98.5% |
| Accurate 4064 | <<locked>> | 88% | 58,436 psi | 90% | 2953 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,201 psi | 85% | 3002 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 57,667 psi | 89% | 2982 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 58,610 psi | 90% | 2986 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,318 psi | 87% | 3038 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,434 psi | 87% | 2930 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,928 psi | 89% | 2894 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 58,015 psi | 89% | 3117 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,941 psi | 86% | 2959 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,115 psi | 86% | 2979 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,956 psi | 86% | 3061 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,305 psi | 88% | 3091 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,608 psi | 86% | 3025 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,979 psi | 75% | 2959 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,151 psi | 71% | 2904 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,408 psi | 62% | 2805 fps | 97.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,634 psi | 81% | 3094 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,725 psi | 89% | 3002 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 56,623 psi | 87% | 2972 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,979 psi | 75% | 2959 fps | 96.3% |
| Bofors RP7 | <<locked>> | 92% | 56,101 psi | 86% | 2949 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,624 psi | 89% | 2907 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,159 psi | 86% | 2956 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,261 psi | 88% | 2989 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 57,667 psi | 89% | 3054 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 92% | 57,653 psi | 89% | 3015 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 84% | 58,320 psi | 90% | 2992 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,217 psi | 86% | 2979 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 58,305 psi | 90% | 3028 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 58,102 psi | 89% | 3094 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 56% | 1834 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,709 psi | 86% | 2940 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,259 psi | 85% | 2920 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 58,392 psi | 90% | 2972 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,595 psi | 89% | 2949 fps | 98.9% |
| IMR 4350 | <<locked>> | 96% | 56,927 psi | 88% | 2982 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,914 psi | 89% | 2982 fps | 98.9% |
| IMR 4831 | <<locked>> | 96% | 55,492 psi | 85% | 2992 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,595 psi | 89% | 3009 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,434 psi | 87% | 2930 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,885 psi | 89% | 2953 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,565 psi | 87% | 2907 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 58,421 psi | 90% | 2963 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,653 psi | 89% | 2976 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 55,564 psi | 85% | 2966 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,698 psi | 63% | 2723 fps | 96.7% |
| Norma 201 | <<locked>> | 84% | 56,391 psi | 87% | 2927 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,145 psi | 88% | 2923 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,405 psi | 85% | 2966 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,754 psi | 89% | 3038 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 51,924 psi | 80% | 3048 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 57,624 psi | 89% | 3041 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,072 psi | 86% | 2992 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,275 psi | 87% | 3038 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 56,521 psi | 87% | 2953 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,507 psi | 87% | 2969 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,753 psi | 57% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,290 psi | 88% | 2972 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,217 psi | 88% | 3051 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,826 psi | 87% | 3084 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,868 psi | 84% | 3022 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,508 psi | 88% | 3110 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 57,246 psi | 88% | 2904 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,840 psi | 87% | 2923 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,797 psi | 87% | 2972 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 58,262 psi | 90% | 3009 fps | 96.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,578 psi | 84% | 3009 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 56,101 psi | 86% | 2949 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,653 psi | 89% | 2976 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,885 psi | 89% | 2953 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 58,421 psi | 90% | 2963 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,564 psi | 85% | 2966 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 58,204 psi | 90% | 3028 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,274 psi | 85% | 2933 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,202 psi | 86% | 2956 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,305 psi | 88% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 58,131 psi | 89% | 2854 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,783 psi | 89% | 2930 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,070 psi | 83% | 3005 fps | 97.4% |
| Somchem S335 | <<locked>> | 84% | 56,985 psi | 88% | 2851 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 58,813 psi | 90% | 2976 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,768 psi | 87% | 2966 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 56,391 psi | 87% | 3041 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,274 psi | 85% | 2986 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 84% | 57,725 psi | 89% | 2835 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,232 psi | 88% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,450 psi | 88% | 2897 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 58,233 psi | 90% | 2940 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,275 psi | 87% | 2982 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,790 psi | 74% | 2844 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 82% | 56,768 psi | 87% | 2927 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,883 psi | 86% | 2900 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,201 psi | 85% | 2986 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,764 psi | 80% | 2989 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,217 psi | 86% | 2953 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,406 psi | 88% | 2976 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,957 psi | 89% | 3061 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,510 psi | 64% | 2943 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,275 psi | 87% | 2963 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,054 psi | 80% | 2923 fps | 96.7% |
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% | 54,781 psi | 84% | 2818 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,935 psi | 74% | 2753 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,224 psi | 71% | 2740 fps | 96.2% |
| Accurate 3100 | <<locked>> | 92% | 37,434 psi | 58% | 2654 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 45,353 psi | 70% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,924 psi | 52% | 2585 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 80% | 50,720 psi | 78% | 2874 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,149 psi | 66% | 2723 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 46,427 psi | 71% | 2861 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,765 psi | 81% | 2874 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 54,520 psi | 84% | 2851 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,007 psi | 72% | 2927 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,265 psi | 67% | 2743 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,253 psi | 71% | 2812 fps | 99.5% |
| Alliant Reloder-16 | 47.6 gr | 80% | 33,707 psi | 52% | 2602 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,768 psi | 58% | 2733 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,803 psi | 70% | 2851 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,905 psi | 71% | 2900 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,876 psi | 43% | 2457 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,708 psi | 55% | 2687 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,287 psi | 53% | 2700 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,546 psi | 78% | 2887 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 43,511 psi | 67% | 2756 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 45,905 psi | 71% | 2900 fps | 95.4% |
| Bofors RP7 | <<locked>> | 82% | 41,046 psi | 63% | 2671 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,244 psi | 83% | 2854 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,504 psi | 81% | 2904 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,976 psi | 68% | 2762 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 41,263 psi | 63% | 2756 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 44,498 psi | 68% | 2779 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 51,242 psi | 79% | 2884 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,241 psi | 48% | 2500 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,761 psi | 73% | 2861 fps | 100% |
| Hodgdon Superformance | 56.9 gr | 84% | 40,625 psi | 63% | 2769 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,021 psi | 42% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,168 psi | 76% | 2835 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,735 psi | 80% | 2867 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,368 psi | 70% | 2756 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,674 psi | 73% | 2782 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 41,553 psi | 64% | 2703 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,089 psi | 62% | 2651 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 32,837 psi | 51% | 2543 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 47,442 psi | 73% | 2844 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 52,765 psi | 81% | 2874 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,720 psi | 78% | 2848 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,038 psi | 77% | 2802 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,484 psi | 70% | 2756 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,550 psi | 58% | 2602 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 40,495 psi | 62% | 2684 fps | 95.7% |
| Lovex S071 | <<locked>> | 96% | 35,766 psi | 55% | 2615 fps | 95% |
| Norma 201 | <<locked>> | 80% | 49,777 psi | 77% | 2822 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,111 psi | 77% | 2818 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,658 psi | 70% | 2799 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 47,079 psi | 72% | 2851 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 42,221 psi | 65% | 2854 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 34,069 psi | 52% | 2589 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 45,701 psi | 70% | 2818 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 37,898 psi | 58% | 2690 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 52,982 psi | 82% | 2897 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,895 psi | 81% | 2913 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 42% | 1677 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,106 psi | 68% | 2743 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,647 psi | 76% | 2930 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,176 psi | 62% | 2795 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,736 psi | 52% | 2605 fps | 95.8% |
| ReloadSwiss RS 70 | 53.3 gr | 82% | 35,491 psi | 55% | 2667 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 53,824 psi | 83% | 2851 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,384 psi | 73% | 2772 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,843 psi | 63% | 2697 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 51,271 psi | 79% | 2894 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 94% | 44,773 psi | 69% | 2835 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 82% | 41,046 psi | 63% | 2671 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,550 psi | 58% | 2602 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,720 psi | 78% | 2848 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,484 psi | 70% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,495 psi | 62% | 2684 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,843 psi | 64% | 2749 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,619 psi | 79% | 2874 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,197 psi | 76% | 2841 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,720 psi | 78% | 2759 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,656 psi | 66% | 2621 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,262 psi | 60% | 2598 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,338 psi | 68% | 2825 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 50,444 psi | 78% | 2759 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,459 psi | 79% | 2867 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,452 psi | 64% | 2703 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 30,690 psi | 47% | 2543 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 42,569 psi | 65% | 2756 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 51,184 psi | 79% | 2746 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,355 psi | 73% | 2743 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,601 psi | 73% | 2753 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,465 psi | 61% | 2631 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,360 psi | 54% | 2589 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 44,541 psi | 69% | 2782 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 53,272 psi | 82% | 2874 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,006 psi | 71% | 2746 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,954 psi | 54% | 2592 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 30,400 psi | 47% | 2536 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,954 psi | 54% | 2566 fps | 98.6% |
| Winchester 748 | <<locked>> | 80% | 53,577 psi | 82% | 2923 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 41,481 psi | 64% | 2762 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,007 psi | 43% | 2543 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,139 psi | 76% | 2851 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,385 psi | 74% | 2858 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 104 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 140gr | Speer TBBC. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,834 fps to 3,117 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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-16, Hodgdon Superformance rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 140gr | Speer TBBC 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.