Load Specifications
Bullet Manufacturer:Frontier Bullets
Bullet Weight:140 gr
Bullet Diameter:0.283"
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:1:10.0
Load data in caliber 7 mm Rem. SA Ultra Mag. with .283 | 140gr | Frontier PH HPBT 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, 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.
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% | 56,855 psi | 87% | 2838 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,159 psi | 86% | 2864 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,580 psi | 89% | 2933 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 58,305 psi | 90% | 2930 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,036 psi | 72% | 2838 fps | 98% |
| Accurate 4064 | <<locked>> | 88% | 56,449 psi | 87% | 2920 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,956 psi | 88% | 3022 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 56,086 psi | 86% | 2949 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,927 psi | 88% | 2949 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,505 psi | 84% | 2995 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 58,436 psi | 90% | 2949 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,260 psi | 87% | 2867 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,217 psi | 86% | 3081 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 54,215 psi | 83% | 2989 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,406 psi | 88% | 2972 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,885 psi | 89% | 2995 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,406 psi | 88% | 3071 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,071 psi | 85% | 3051 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,403 psi | 82% | 2979 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,309 psi | 68% | 2864 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,972 psi | 60% | 2762 fps | 96.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,517 psi | 78% | 3051 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,811 psi | 86% | 2963 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 58,537 psi | 90% | 2992 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,885 psi | 89% | 2966 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,086 psi | 86% | 2874 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 58,276 psi | 90% | 2979 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,579 psi | 86% | 2956 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 94% | 55,477 psi | 85% | 3012 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 92% | 55,854 psi | 86% | 2972 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 84% | 56,724 psi | 87% | 2963 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,725 psi | 89% | 2995 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,521 psi | 87% | 2995 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,927 psi | 86% | 3051 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,897 psi | 55% | 1814 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,812 psi | 89% | 2959 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 57,072 psi | 88% | 2940 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,579 psi | 87% | 2933 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,028 psi | 86% | 2913 fps | 98.6% |
| IMR 4350 | <<locked>> | 98% | 58,566 psi | 90% | 2995 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,130 psi | 86% | 2943 fps | 98.5% |
| IMR 4831 | <<locked>> | 98% | 57,276 psi | 88% | 3009 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,709 psi | 86% | 2972 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 58,436 psi | 90% | 2949 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,275 psi | 87% | 2923 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 58,639 psi | 90% | 2923 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,565 psi | 87% | 2927 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,086 psi | 86% | 2943 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 57,043 psi | 88% | 2976 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,015 psi | 60% | 2684 fps | 96% |
| Norma 201 | <<locked>> | 86% | 58,117 psi | 89% | 2943 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,187 psi | 85% | 2887 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,116 psi | 88% | 2982 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,767 psi | 86% | 2992 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 49,821 psi | 77% | 3002 fps | 97.7% |
| Norma URP | <<locked>> | 96% | 55,405 psi | 85% | 3002 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 58,059 psi | 89% | 3012 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,957 psi | 89% | 3054 fps | 99.4% |
| Ramshot TAC | <<locked>> | 84% | 58,494 psi | 90% | 2972 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 58,682 psi | 90% | 2989 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,506 psi | 56% | 1860 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,492 psi | 85% | 2936 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,201 psi | 85% | 3015 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 58,610 psi | 90% | 3100 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,637 psi | 87% | 3041 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,622 psi | 86% | 3071 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 55,753 psi | 86% | 2874 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,259 psi | 85% | 2890 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 58,407 psi | 90% | 2986 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,376 psi | 87% | 2966 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,576 psi | 81% | 2966 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 94% | 57,885 psi | 89% | 2966 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,086 psi | 86% | 2943 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,275 psi | 87% | 2923 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,565 psi | 87% | 2927 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 57,043 psi | 88% | 2976 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,260 psi | 87% | 2992 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,450 psi | 88% | 2956 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 58,030 psi | 89% | 2972 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,970 psi | 86% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,420 psi | 87% | 2825 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,115 psi | 86% | 2890 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,083 psi | 80% | 2963 fps | 96.7% |
| Somchem S335 | <<locked>> | 86% | 58,740 psi | 90% | 2867 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,869 psi | 87% | 2940 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 58,334 psi | 90% | 2979 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,856 psi | 89% | 3054 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,345 psi | 82% | 2946 fps | 97.8% |
| Vihtavuori N130 | <<locked>> | 82% | 58,726 psi | 90% | 2825 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 56,362 psi | 87% | 2808 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,463 psi | 85% | 2854 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,956 psi | 86% | 2867 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,304 psi | 87% | 2907 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 58,073 psi | 89% | 2999 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 55,201 psi | 85% | 2894 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,783 psi | 89% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,971 psi | 88% | 3002 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,574 psi | 76% | 2946 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 58,088 psi | 89% | 2969 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,477 psi | 85% | 2943 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,811 psi | 86% | 3018 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,798 psi | 61% | 2894 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 58,175 psi | 89% | 2982 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,009 psi | 77% | 2877 fps | 95.9% |
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% | 53,243 psi | 82% | 2789 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,383 psi | 71% | 2723 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,969 psi | 83% | 2884 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,962 psi | 69% | 2703 fps | 95.6% |
| Accurate 3100 | <<locked>> | 94% | 38,363 psi | 59% | 2667 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,903 psi | 68% | 2723 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,677 psi | 50% | 2552 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 49,371 psi | 76% | 2841 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,945 psi | 65% | 2687 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 47,718 psi | 73% | 2874 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,474 psi | 79% | 2844 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,808 psi | 81% | 2822 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,527 psi | 70% | 2890 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 47,819 psi | 74% | 2877 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,959 psi | 65% | 2713 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,991 psi | 69% | 2782 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,663 psi | 50% | 2566 fps | 95.6% |
| Alliant Reloder-17 | 49.6 gr | 80% | 36,506 psi | 56% | 2694 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,181 psi | 73% | 2867 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,514 psi | 44% | 2470 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,550 psi | 56% | 2700 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,201 psi | 54% | 2720 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,892 psi | 75% | 2851 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 41,930 psi | 65% | 2720 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,380 psi | 65% | 2690 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,953 psi | 81% | 2825 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,966 psi | 78% | 2871 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,525 psi | 65% | 2723 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 39,929 psi | 61% | 2720 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 86% | 46,064 psi | 71% | 2802 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 49,893 psi | 77% | 2851 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,168 psi | 46% | 2464 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,180 psi | 71% | 2828 fps | 100% |
| Hodgdon Superformance | 56.4 gr | 86% | 42,076 psi | 65% | 2792 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,731 psi | 41% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,630 psi | 73% | 2799 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 50,082 psi | 77% | 2838 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,077 psi | 68% | 2723 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,557 psi | 72% | 2749 fps | 96.9% |
| IMR 4350 | <<locked>> | 88% | 42,801 psi | 66% | 2720 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,365 psi | 64% | 2671 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 31,705 psi | 49% | 2510 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 46,122 psi | 71% | 2808 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 51,474 psi | 79% | 2844 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,066 psi | 75% | 2815 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,791 psi | 75% | 2769 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,164 psi | 68% | 2723 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,448 psi | 56% | 2566 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 39,233 psi | 60% | 2648 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 36,622 psi | 56% | 2628 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 48,414 psi | 74% | 2792 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,718 psi | 75% | 2789 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,353 psi | 68% | 2766 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 48,820 psi | 75% | 2874 fps | 95.5% |
| Norma MRP | <<locked>> | 94% | 40,582 psi | 62% | 2808 fps | 95% |
| Norma URP | <<locked>> | 80% | 32,866 psi | 51% | 2552 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 44,309 psi | 68% | 2785 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 38,986 psi | 60% | 2707 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 51,445 psi | 79% | 2858 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,198 psi | 79% | 2877 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,137 psi | 42% | 1660 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,815 psi | 66% | 2707 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,921 psi | 74% | 2894 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,798 psi | 60% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,430 psi | 50% | 2566 fps | 95% |
| ReloadSwiss RS 70 | 52.9 gr | 84% | 36,738 psi | 57% | 2690 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 52,301 psi | 80% | 2822 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,021 psi | 71% | 2740 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,552 psi | 61% | 2664 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 98% | 52,736 psi | 81% | 2910 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 96% | 45,861 psi | 71% | 2848 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 42,380 psi | 65% | 2690 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,448 psi | 56% | 2566 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,066 psi | 75% | 2815 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,164 psi | 68% | 2723 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 39,233 psi | 60% | 2648 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,422 psi | 62% | 2713 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,951 psi | 77% | 2835 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,761 psi | 73% | 2808 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,298 psi | 76% | 2730 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,379 psi | 64% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,640 psi | 63% | 2618 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,426 psi | 70% | 2838 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 49,168 psi | 76% | 2730 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,763 psi | 77% | 2828 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,190 psi | 62% | 2667 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 29,443 psi | 45% | 2503 fps | 97.7% |
| Somchem S385 | <<locked>> | 94% | 43,758 psi | 67% | 2776 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 55,390 psi | 85% | 2779 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 49,763 psi | 77% | 2717 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,788 psi | 70% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,296 psi | 71% | 2723 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,261 psi | 59% | 2602 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 34,200 psi | 53% | 2556 fps | 96% |
| Vihtavuori N530 | <<locked>> | 80% | 51,692 psi | 80% | 2841 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,599 psi | 69% | 2713 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,692 psi | 52% | 2552 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 86% | 30,951 psi | 48% | 2549 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,765 psi | 52% | 2530 fps | 98.1% |
| Winchester 748 | <<locked>> | 80% | 51,953 psi | 80% | 2890 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 39,929 psi | 61% | 2720 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,645 psi | 44% | 2556 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,688 psi | 73% | 2818 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,644 psi | 72% | 2815 fps | 95% |
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 .283 | 140gr | Frontier PH HPBT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,100 fps; across all powders the maximum-charge window runs from 1,814 fps to 3,100 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 55–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.283" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 .283 | 140gr | Frontier PH HPBT 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.