Load Specifications
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 150gr | Impala LW CFN bullet and 103 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% | 57,624 psi | 89% | 2900 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,173 psi | 86% | 2927 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 57,029 psi | 88% | 2933 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,870 psi | 89% | 2989 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 58,769 psi | 90% | 2953 fps | 96.2% |
| Accurate 4064 | <<locked>> | 92% | 56,666 psi | 87% | 2976 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,216 psi | 85% | 3038 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 82% | 58,813 psi | 90% | 2877 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 56,260 psi | 87% | 2992 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 94% | 56,985 psi | 88% | 2986 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 88% | 58,581 psi | 90% | 2995 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,637 psi | 86% | 2927 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,956 psi | 88% | 3054 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,405 psi | 85% | 3104 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,942 psi | 88% | 3012 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,000 psi | 88% | 2904 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,609 psi | 89% | 3035 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,692 psi | 81% | 3028 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 98% | 57,377 psi | 88% | 3133 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,522 psi | 59% | 2762 fps | 97.1% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 58,146 psi | 89% | 2871 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,796 psi | 86% | 3002 fps | 99.1% |
| Bofors RP3 | <<locked>> | 94% | 58,131 psi | 89% | 3035 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 58,001 psi | 89% | 2989 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,087 psi | 88% | 2930 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 58,233 psi | 90% | 3031 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,159 psi | 86% | 3071 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 82% | 55,796 psi | 86% | 2943 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,739 psi | 87% | 2966 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,245 psi | 85% | 2982 fps | 98.5% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 57,682 psi | 89% | 3081 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 98% | 58,320 psi | 90% | 3035 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 88% | 56,768 psi | 87% | 3005 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,124 psi | 76% | 2910 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,492 psi | 85% | 3031 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 98% | 55,085 psi | 85% | 3054 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,752 psi | 55% | 1821 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,667 psi | 89% | 3002 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 56,521 psi | 87% | 2992 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,550 psi | 87% | 2972 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,594 psi | 87% | 2943 fps | 96.7% |
| IMR 4198 | <<locked>> | 82% | 56,449 psi | 87% | 2858 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,159 psi | 86% | 2966 fps | 96.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,098 psi | 80% | 2969 fps | 98.6% |
| IMR 4895 | <<locked>> | 90% | 55,608 psi | 86% | 3015 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 88% | 58,581 psi | 90% | 2995 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,144 psi | 86% | 2936 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,202 psi | 86% | 2976 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,666 psi | 86% | 2913 fps | 99.6% |
| Lovex S062 | <<locked>> | 92% | 56,681 psi | 87% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,767 psi | 86% | 2963 fps | 97.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,405 psi | 87% | 2992 fps | 97% |
| Norma 201 | <<locked>> | 88% | 55,492 psi | 85% | 2943 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,521 psi | 85% | 2943 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,739 psi | 87% | 3022 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 53,722 psi | 83% | 3015 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 92% | 57,203 psi | 88% | 3045 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,823 psi | 81% | 3009 fps | 97% |
| Ramshot TAC | <<locked>> | 86% | 55,608 psi | 86% | 2956 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 88% | 58,653 psi | 90% | 3035 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,202 psi | 86% | 2943 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,289 psi | 56% | 1867 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 58,059 psi | 89% | 2976 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,579 psi | 86% | 2963 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 57,928 psi | 89% | 3104 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,145 psi | 88% | 3136 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,273 psi | 83% | 3051 fps | 98.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,404 psi | 84% | 3071 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 86% | 56,826 psi | 87% | 2933 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,854 psi | 86% | 2940 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,667 psi | 89% | 3018 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 58,001 psi | 89% | 2989 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,767 psi | 86% | 2963 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,202 psi | 86% | 2976 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,681 psi | 87% | 2972 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,405 psi | 87% | 2992 fps | 97% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,957 psi | 89% | 2946 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,274 psi | 85% | 3025 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,348 psi | 88% | 2920 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,827 psi | 89% | 2989 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 57,914 psi | 89% | 3012 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,782 psi | 87% | 2884 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,391 psi | 87% | 2874 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,159 psi | 86% | 2910 fps | 96.6% |
| Somchem S321 | <<locked>> | 84% | 56,521 psi | 87% | 2979 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,159 psi | 86% | 2881 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,000 psi | 88% | 2982 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 57,957 psi | 89% | 3018 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,544 psi | 75% | 2972 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 56,579 psi | 87% | 2848 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,739 psi | 87% | 2864 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 58,624 psi | 90% | 2953 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,912 psi | 86% | 2920 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,767 psi | 86% | 2943 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,420 psi | 87% | 3015 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 86% | 55,680 psi | 86% | 2943 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,479 psi | 88% | 2966 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,579 psi | 86% | 3022 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,582 psi | 64% | 2844 fps | 97.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,942 psi | 88% | 2992 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 55,274 psi | 85% | 2992 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 57,943 psi | 89% | 3084 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 90% | 57,943 psi | 89% | 3025 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% | 48,428 psi | 75% | 2762 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,634 psi | 81% | 2874 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,105 psi | 65% | 2697 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,877 psi | 74% | 2835 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,143 psi | 85% | 2897 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 39,682 psi | 61% | 2684 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 37,420 psi | 58% | 2700 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 55,390 psi | 85% | 2828 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 44,324 psi | 68% | 2779 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 37,826 psi | 58% | 2625 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,137 psi | 71% | 2789 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 46,137 psi | 71% | 2785 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,606 psi | 82% | 2999 fps | 99.7% |
| Alliant Power Pro 2000-MR | 52 gr | 80% | 40,103 psi | 62% | 2795 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,565 psi | 58% | 2651 fps | 97.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,606 psi | 82% | 2854 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,219 psi | 62% | 2713 fps | 96.7% |
| Alliant Reloder-16 | <<locked>> | 90% | 39,523 psi | 61% | 2759 fps | 95.7% |
| Alliant Reloder-17 | 52.5 gr | 82% | 34,722 psi | 53% | 2664 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 34,403 psi | 53% | 2654 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 54,737 psi | 84% | 2825 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,105 psi | 66% | 2776 fps | 96.9% |
| Bofors RP3 | <<locked>> | 80% | 37,478 psi | 58% | 2661 fps | 97.5% |
| Bofors RP7 | <<locked>> | 94% | 51,503 psi | 79% | 2881 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,979 psi | 74% | 2779 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,092 psi | 69% | 2812 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,907 psi | 75% | 2949 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 52,228 psi | 80% | 2890 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,171 psi | 82% | 2913 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 40,596 psi | 62% | 2710 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 96% | 50,836 psi | 78% | 2966 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 96% | 55,013 psi | 85% | 2982 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 44,701 psi | 69% | 2792 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 34,374 psi | 53% | 2598 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,495 psi | 62% | 2759 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 96% | 51,343 psi | 79% | 2986 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,614 psi | 41% | 1624 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,612 psi | 66% | 2736 fps | 98.2% |
| IMR 3031 | <<locked>> | 80% | 44,208 psi | 68% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,697 psi | 61% | 2661 fps | 96.6% |
| IMR 4166 Enduron | <<locked>> | 86% | 50,386 psi | 78% | 2838 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 53,316 psi | 82% | 2812 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 92% | 49,777 psi | 77% | 2858 fps | 95.1% |
| IMR 4831 | <<locked>> | 90% | 38,232 psi | 59% | 2700 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 41,133 psi | 63% | 2746 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 80% | 46,137 psi | 71% | 2789 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 52,736 psi | 81% | 2887 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,671 psi | 67% | 2769 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 44,338 psi | 68% | 2713 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 39,972 psi | 61% | 2674 fps | 98.4% |
| Lovex S065 | <<locked>> | 90% | 44,193 psi | 68% | 2756 fps | 95.4% |
| Lovex S070 | <<locked>> | 96% | 50,140 psi | 77% | 2887 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 43,801 psi | 67% | 2740 fps | 99% |
| Norma 202 | <<locked>> | 80% | 43,714 psi | 67% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,624 psi | 61% | 2703 fps | 97.1% |
| Norma URP | <<locked>> | 90% | 39,697 psi | 61% | 2749 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 38,856 psi | 60% | 2707 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 96% | 46,746 psi | 72% | 2894 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 46,035 psi | 71% | 2785 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,353 psi | 70% | 2808 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,690 psi | 76% | 2835 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,166 psi | 42% | 1670 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,547 psi | 79% | 2877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 46,282 psi | 71% | 2799 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,669 psi | 64% | 2812 fps | 97.1% |
| ReloadSwiss RS 60 | 51.2 gr | 80% | 34,505 psi | 53% | 2674 fps | 98.2% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 39,305 psi | 60% | 2766 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,090 psi | 65% | 2828 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 48,225 psi | 74% | 2792 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,003 psi | 65% | 2694 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 35,534 psi | 55% | 2605 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 94% | 51,503 psi | 79% | 2881 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 90% | 44,193 psi | 68% | 2756 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,671 psi | 67% | 2769 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 39,972 psi | 61% | 2674 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 96% | 50,140 psi | 77% | 2887 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 54,259 psi | 83% | 2894 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,810 psi | 55% | 2641 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,969 psi | 83% | 2874 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,730 psi | 69% | 2766 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,685 psi | 66% | 2743 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,715 psi | 69% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,333 psi | 57% | 2552 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 49,617 psi | 76% | 2805 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 49,806 psi | 77% | 2871 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 44,541 psi | 69% | 2694 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,947 psi | 68% | 2759 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 36,100 psi | 56% | 2608 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 30,081 psi | 46% | 2539 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 50,212 psi | 77% | 2756 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,802 psi | 69% | 2684 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,872 psi | 63% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,452 psi | 64% | 2680 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 34,374 psi | 53% | 2543 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 38,986 psi | 60% | 2694 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 46,195 psi | 71% | 2785 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 40,118 psi | 62% | 2671 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 90% | 40,886 psi | 63% | 2753 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 96% | 36,898 psi | 57% | 2736 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 32,503 psi | 50% | 2507 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 45,672 psi | 70% | 2831 fps | 99.7% |
| Winchester 760 | <<locked>> | 96% | 51,082 psi | 79% | 2969 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,221 psi | 65% | 2753 fps | 98.3% |
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 115 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 150gr | Impala LW CFN. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,136 fps; across all powders the maximum-charge window runs from 1,821 fps to 3,136 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, 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 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 LW CFN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.