Load Specifications
Bullet Manufacturer:Impala Bullets
Bullet Weight:150 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.003"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:74 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:12.5
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 150gr | Impala LWH CHP bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR 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% | 57,479 psi | 88% | 2897 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,970 psi | 86% | 2923 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,840 psi | 87% | 2927 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,740 psi | 89% | 2986 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 58,407 psi | 90% | 2946 fps | 96.1% |
| Accurate 4064 | <<locked>> | 92% | 56,434 psi | 87% | 2972 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,810 psi | 84% | 3028 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 82% | 58,668 psi | 90% | 2874 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 56,130 psi | 86% | 2989 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 94% | 56,536 psi | 87% | 2979 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 88% | 58,508 psi | 90% | 2992 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,361 psi | 85% | 2923 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,782 psi | 87% | 3051 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 58,726 psi | 90% | 3156 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,855 psi | 87% | 3009 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,797 psi | 87% | 2900 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,508 psi | 88% | 3031 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,605 psi | 81% | 3025 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 98% | 57,000 psi | 88% | 3123 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,305 psi | 59% | 2753 fps | 97% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 58,044 psi | 89% | 2867 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,419 psi | 85% | 2995 fps | 99% |
| Bofors RP3 | <<locked>> | 94% | 57,754 psi | 89% | 3028 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,566 psi | 89% | 2979 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,637 psi | 87% | 2920 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 57,870 psi | 89% | 3025 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,651 psi | 86% | 3061 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 82% | 55,637 psi | 86% | 2940 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,594 psi | 87% | 2963 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 58,537 psi | 90% | 3031 fps | 98.9% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 57,232 psi | 88% | 3071 fps | 97% |
| Hodgdon H4895 | <<locked>> | 88% | 56,681 psi | 87% | 3002 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,979 psi | 75% | 2907 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,390 psi | 85% | 3028 fps | 99.9% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 58,624 psi | 90% | 3107 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,708 psi | 55% | 1821 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,508 psi | 88% | 2999 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 56,318 psi | 87% | 2989 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,173 psi | 86% | 2963 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,507 psi | 87% | 2940 fps | 96.7% |
| IMR 4198 | <<locked>> | 82% | 56,231 psi | 87% | 2851 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,753 psi | 86% | 2956 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,692 psi | 80% | 2963 fps | 98.5% |
| IMR 4895 | <<locked>> | 90% | 55,492 psi | 85% | 3012 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 88% | 58,508 psi | 90% | 2992 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,709 psi | 86% | 2930 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,028 psi | 86% | 2972 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,579 psi | 86% | 2913 fps | 99.6% |
| Lovex S062 | <<locked>> | 92% | 56,507 psi | 87% | 2969 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 58,711 psi | 90% | 3005 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,333 psi | 87% | 2989 fps | 96.9% |
| Norma 201 | <<locked>> | 90% | 58,697 psi | 90% | 2989 fps | 100% |
| Norma 202 | <<locked>> | 90% | 58,769 psi | 90% | 2989 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,637 psi | 87% | 3018 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 53,621 psi | 82% | 3015 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 92% | 56,782 psi | 87% | 3038 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,489 psi | 81% | 2999 fps | 96.9% |
| Ramshot TAC | <<locked>> | 88% | 58,769 psi | 90% | 3002 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 88% | 58,262 psi | 90% | 3025 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,101 psi | 86% | 2940 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,230 psi | 56% | 1864 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 57,856 psi | 89% | 2972 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,274 psi | 85% | 2953 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 57,421 psi | 88% | 3094 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,014 psi | 88% | 3133 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,896 psi | 83% | 3045 fps | 98.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,157 psi | 83% | 3068 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 86% | 56,695 psi | 87% | 2927 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,724 psi | 86% | 2936 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,537 psi | 89% | 3018 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 57,566 psi | 89% | 2979 fps | 96.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 58,711 psi | 90% | 3005 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,028 psi | 86% | 2972 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,507 psi | 87% | 2969 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,333 psi | 87% | 2989 fps | 96.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,827 psi | 89% | 2943 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 58,624 psi | 90% | 3071 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,145 psi | 88% | 2917 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,421 psi | 88% | 2982 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 57,566 psi | 89% | 3005 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,333 psi | 87% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,275 psi | 87% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,072 psi | 86% | 2907 fps | 96.5% |
| Somchem S321 | <<locked>> | 84% | 56,362 psi | 87% | 2976 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,028 psi | 86% | 2877 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,666 psi | 87% | 2972 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 57,493 psi | 88% | 3009 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,211 psi | 74% | 2963 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 56,101 psi | 86% | 2838 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,304 psi | 87% | 2858 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 58,160 psi | 89% | 2946 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,738 psi | 86% | 2917 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,593 psi | 86% | 2940 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,014 psi | 86% | 3005 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 86% | 55,492 psi | 85% | 2940 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,406 psi | 88% | 2959 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,463 psi | 85% | 3018 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,437 psi | 64% | 2841 fps | 97% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,898 psi | 88% | 2989 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 55,201 psi | 85% | 2989 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 57,551 psi | 89% | 3077 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 90% | 57,493 psi | 88% | 3015 fps | 99.9% |
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% | 48,240 psi | 74% | 2759 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,518 psi | 81% | 2871 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,930 psi | 65% | 2694 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,529 psi | 73% | 2828 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,781 psi | 84% | 2890 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 39,523 psi | 61% | 2680 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 39,726 psi | 61% | 2753 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 55,216 psi | 85% | 2825 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 44,179 psi | 68% | 2776 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 37,695 psi | 58% | 2618 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,963 psi | 71% | 2785 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 45,934 psi | 71% | 2782 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,432 psi | 82% | 2995 fps | 99.7% |
| Alliant Power Pro 2000-MR | 51.8 gr | 80% | 39,972 psi | 61% | 2789 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,434 psi | 58% | 2648 fps | 97.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,403 psi | 82% | 2851 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,089 psi | 62% | 2707 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 90% | 39,218 psi | 60% | 2749 fps | 95.5% |
| Alliant Reloder-17 | 52.2 gr | 82% | 34,461 psi | 53% | 2654 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 34,171 psi | 53% | 2644 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 54,592 psi | 84% | 2822 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,975 psi | 66% | 2769 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 37,275 psi | 57% | 2654 fps | 97.5% |
| Bofors RP7 | <<locked>> | 96% | 54,273 psi | 83% | 2927 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,848 psi | 74% | 2776 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,991 psi | 69% | 2812 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,762 psi | 75% | 2946 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 80% | 51,967 psi | 80% | 2884 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,055 psi | 82% | 2910 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 40,422 psi | 62% | 2703 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 96% | 50,502 psi | 78% | 2956 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 44,512 psi | 68% | 2789 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 34,301 psi | 53% | 2592 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,379 psi | 62% | 2756 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 98% | 54,868 psi | 84% | 3045 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,731 psi | 41% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,482 psi | 65% | 2733 fps | 98.2% |
| IMR 3031 | <<locked>> | 80% | 44,005 psi | 68% | 2792 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,566 psi | 61% | 2654 fps | 96.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 50,038 psi | 77% | 2828 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 53,098 psi | 82% | 2808 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 92% | 49,632 psi | 76% | 2851 fps | 95.1% |
| IMR 4831 | <<locked>> | 90% | 38,087 psi | 59% | 2697 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 40,959 psi | 63% | 2740 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 80% | 45,963 psi | 71% | 2785 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 52,286 psi | 80% | 2877 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,540 psi | 67% | 2766 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 44,193 psi | 68% | 2710 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 39,827 psi | 61% | 2667 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 44,092 psi | 68% | 2753 fps | 95.3% |
| Lovex S070 | <<locked>> | 96% | 50,082 psi | 77% | 2884 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 43,642 psi | 67% | 2733 fps | 99% |
| Norma 202 | <<locked>> | 80% | 43,555 psi | 67% | 2743 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,494 psi | 61% | 2697 fps | 97% |
| Norma URP | <<locked>> | 90% | 39,552 psi | 61% | 2743 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 38,769 psi | 60% | 2703 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 96% | 46,412 psi | 71% | 2887 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 45,861 psi | 71% | 2779 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,208 psi | 70% | 2805 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,603 psi | 76% | 2831 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,079 psi | 42% | 1667 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,111 psi | 79% | 2867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 45,963 psi | 71% | 2789 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,524 psi | 64% | 2808 fps | 97% |
| ReloadSwiss RS 60 | 51 gr | 80% | 34,432 psi | 53% | 2671 fps | 98.2% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 39,160 psi | 60% | 2759 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 44,556 psi | 69% | 2881 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 48,124 psi | 74% | 2789 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,655 psi | 64% | 2684 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 80% | 35,317 psi | 54% | 2602 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 96% | 54,273 psi | 83% | 2927 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 44,092 psi | 68% | 2753 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,540 psi | 67% | 2766 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 39,827 psi | 61% | 2667 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 96% | 50,082 psi | 77% | 2884 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 54,157 psi | 83% | 2887 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,708 psi | 55% | 2638 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,983 psi | 83% | 2871 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,353 psi | 68% | 2756 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,569 psi | 65% | 2740 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,817 psi | 69% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,405 psi | 58% | 2552 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 49,284 psi | 76% | 2799 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 49,719 psi | 76% | 2867 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 44,396 psi | 68% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,859 psi | 67% | 2756 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 35,955 psi | 55% | 2602 fps | 96.5% |
| Somchem S365 | <<locked>> | 84% | 29,834 psi | 46% | 2530 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 50,299 psi | 77% | 2756 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,831 psi | 69% | 2684 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,901 psi | 63% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,307 psi | 64% | 2677 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 34,243 psi | 53% | 2539 fps | 97.4% |
| Vihtavuori N160 | <<locked>> | 88% | 38,885 psi | 60% | 2690 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 46,064 psi | 71% | 2779 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 39,784 psi | 61% | 2661 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 40,756 psi | 63% | 2749 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 96% | 36,753 psi | 57% | 2733 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 34,389 psi | 53% | 2556 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 45,513 psi | 70% | 2825 fps | 99.7% |
| Winchester 760 | <<locked>> | 96% | 50,691 psi | 78% | 2963 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,843 psi | 64% | 2743 fps | 98.2% |
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 102 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 150gr | Impala LWH CHP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,821 fps to 3,156 fps. Accurate 4350 gives the best case fill at 100 %, and 102 of the 102 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 150.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 60, Alliant Power Pro 2000-MR, Alliant Reloder-17 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 150gr | Impala LWH CHP 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.