Load Specifications
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 150gr | Barnes TSX BT bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and ReloadSwiss RS 60.
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>> | 88% | 55,361 psi | 85% | 2894 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 57,798 psi | 89% | 2972 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 56,695 psi | 87% | 2959 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 55,970 psi | 86% | 2986 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 57,624 psi | 89% | 2956 fps | 96% |
| Accurate 4064 | <<locked>> | 96% | 56,188 psi | 86% | 2999 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,733 psi | 75% | 2953 fps | 98% |
| Accurate LT-30 | <<locked>> | 84% | 58,610 psi | 90% | 2890 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,448 psi | 85% | 2867 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 58,320 psi | 90% | 3045 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 55,782 psi | 86% | 2986 fps | 99.3% |
| ADI AR 2219 | <<locked>> | 82% | 56,188 psi | 86% | 2969 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 57,537 psi | 89% | 2999 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 57,696 psi | 89% | 2976 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,361 psi | 85% | 3054 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 58,247 psi | 90% | 3166 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,288 psi | 85% | 3009 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 86% | 58,755 psi | 90% | 2953 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 55,999 psi | 86% | 3028 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,022 psi | 74% | 2963 fps | 98.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,188 psi | 86% | 3130 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 57,856 psi | 89% | 2884 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 58,392 psi | 90% | 3061 fps | 99.3% |
| Bofors RP3 | <<locked>> | 96% | 55,492 psi | 85% | 3018 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 56,275 psi | 87% | 2979 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,144 psi | 86% | 2933 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 56,550 psi | 87% | 3025 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,013 psi | 85% | 3074 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 86% | 58,334 psi | 90% | 2999 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,709 psi | 86% | 2969 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,246 psi | 88% | 3035 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,417 psi | 81% | 3012 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 90% | 55,274 psi | 85% | 3005 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,280 psi | 68% | 2841 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 57,957 psi | 89% | 3087 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,708 psi | 53% | 1811 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,782 psi | 87% | 3009 fps | 99.9% |
| IMR 3031 | <<locked>> | 92% | 58,334 psi | 90% | 3038 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 58,813 psi | 90% | 3022 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,738 psi | 86% | 2946 fps | 96.5% |
| IMR 4198 | <<locked>> | 84% | 55,695 psi | 86% | 2867 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 58,595 psi | 90% | 3018 fps | 97% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,412 psi | 71% | 2894 fps | 97.6% |
| IMR 4895 | <<locked>> | 94% | 57,421 psi | 88% | 3061 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 90% | 57,537 psi | 89% | 2999 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 57,609 psi | 89% | 2982 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 57,769 psi | 89% | 3022 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 58,305 psi | 90% | 2972 fps | 99.8% |
| Lovex S062 | <<locked>> | 96% | 58,001 psi | 89% | 3015 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,708 psi | 83% | 2949 fps | 97.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,126 psi | 79% | 2927 fps | 95.9% |
| Norma 200 | <<locked>> | 82% | 58,566 psi | 90% | 2923 fps | 100% |
| Norma 201 | <<locked>> | 92% | 56,797 psi | 87% | 2986 fps | 100% |
| Norma 202 | <<locked>> | 92% | 57,392 psi | 88% | 2992 fps | 100% |
| Norma 203B | <<locked>> | 96% | 58,726 psi | 90% | 3071 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 48,689 psi | 75% | 2953 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 94% | 55,825 psi | 86% | 3045 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,819 psi | 74% | 2936 fps | 95.9% |
| Ramshot TAC | <<locked>> | 90% | 58,146 psi | 89% | 3012 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 90% | 57,464 psi | 88% | 3035 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,288 psi | 85% | 2949 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,027 psi | 54% | 1854 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,232 psi | 88% | 2986 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 57,696 psi | 89% | 3012 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,304 psi | 87% | 3097 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,912 psi | 86% | 3133 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,544 psi | 75% | 2976 fps | 97.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,574 psi | 76% | 3002 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 90% | 57,580 psi | 89% | 2972 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,217 psi | 88% | 2982 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,332 psi | 85% | 3009 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 56,275 psi | 87% | 2979 fps | 96% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,708 psi | 83% | 2949 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 92% | 57,769 psi | 89% | 3022 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 58,001 psi | 89% | 3015 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,126 psi | 79% | 2927 fps | 95.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,217 psi | 88% | 2956 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 57,986 psi | 89% | 2621 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,217 psi | 86% | 2976 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 57,769 psi | 89% | 3077 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,478 psi | 87% | 2930 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,115 psi | 86% | 2986 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 56,753 psi | 87% | 3015 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,376 psi | 85% | 2881 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,143 psi | 85% | 2874 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,563 psi | 84% | 2904 fps | 96.3% |
| Somchem S321 | <<locked>> | 86% | 55,143 psi | 85% | 2979 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 57,928 psi | 89% | 2927 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,724 psi | 86% | 2979 fps | 99.6% |
| Somchem S355 | <<locked>> | 98% | 55,753 psi | 86% | 3005 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,192 psi | 66% | 2894 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 88% | 58,682 psi | 90% | 2897 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,434 psi | 85% | 2867 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,463 psi | 87% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 58,030 psi | 89% | 2969 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 57,798 psi | 89% | 2989 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,198 psi | 79% | 2949 fps | 98.2% |
| Vihtavuori N530 | <<locked>> | 90% | 58,334 psi | 90% | 3002 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 55,999 psi | 86% | 2963 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,111 psi | 77% | 2953 fps | 97.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,301 psi | 80% | 2936 fps | 99.7% |
| Winchester 748 | <<locked>> | 90% | 57,696 psi | 89% | 3048 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 52,707 psi | 81% | 3018 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 92% | 56,550 psi | 87% | 3022 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% | 43,004 psi | 66% | 2700 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,862 psi | 72% | 2808 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,201 psi | 54% | 2602 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,264 psi | 65% | 2759 fps | 99.7% |
| Accurate 2700 | <<locked>> | 92% | 53,824 psi | 83% | 2897 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 33,344 psi | 51% | 2582 fps | 99% |
| Accurate 4350 | <<locked>> | 94% | 39,305 psi | 60% | 2772 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 51,619 psi | 79% | 2792 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,011 psi | 80% | 2815 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,581 psi | 61% | 2707 fps | 97% |
| ADI AR 2208 | <<locked>> | 82% | 35,998 psi | 55% | 2605 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 52,315 psi | 80% | 2913 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,684 psi | 64% | 2726 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 80% | 40,988 psi | 63% | 2726 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,472 psi | 75% | 2936 fps | 99.2% |
| Alliant Power Pro 2000-MR | 52.9 gr | 82% | 38,435 psi | 59% | 2779 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,764 psi | 50% | 2566 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,805 psi | 75% | 2808 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,404 psi | 54% | 2628 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 94% | 39,871 psi | 61% | 2789 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 86% | 34,708 psi | 53% | 2690 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,865 psi | 78% | 2785 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,667 psi | 59% | 2703 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 31,966 psi | 49% | 2559 fps | 95.7% |
| Bofors RP7 | <<locked>> | 98% | 52,794 psi | 81% | 2923 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,743 psi | 67% | 2726 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,045 psi | 62% | 2740 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,150 psi | 68% | 2881 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 80% | 47,863 psi | 74% | 2841 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,530 psi | 75% | 2861 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 40,799 psi | 63% | 2743 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 98% | 49,139 psi | 76% | 2953 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 39,871 psi | 61% | 2720 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 34,142 psi | 53% | 2618 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,897 psi | 55% | 2680 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 39% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,580 psi | 59% | 2677 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 39,117 psi | 60% | 2730 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,331 psi | 54% | 2585 fps | 95.2% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,197 psi | 76% | 2835 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 49,356 psi | 76% | 2772 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 51,677 psi | 80% | 2910 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 37,913 psi | 58% | 2723 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 36,230 psi | 56% | 2664 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 80% | 41,684 psi | 64% | 2726 fps | 98.6% |
| Lovex D073.5 | <<locked>> | 80% | 46,673 psi | 72% | 2812 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 38,087 psi | 59% | 2687 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 40,234 psi | 62% | 2654 fps | 97.2% |
| Lovex S062 | <<locked>> | 80% | 34,925 psi | 54% | 2589 fps | 97.1% |
| Lovex S065 | <<locked>> | 94% | 44,643 psi | 69% | 2792 fps | 95.5% |
| Lovex S070 | <<locked>> | 98% | 47,921 psi | 74% | 2871 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 54,911 psi | 84% | 2874 fps | 100% |
| Norma 201 | <<locked>> | 80% | 38,740 psi | 60% | 2664 fps | 98.1% |
| Norma 202 | <<locked>> | 80% | 38,827 psi | 60% | 2677 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 34,780 psi | 54% | 2618 fps | 95.5% |
| Norma URP | <<locked>> | 94% | 39,842 psi | 61% | 2779 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 34,374 psi | 53% | 2628 fps | 95% |
| Ramshot Hunter | <<locked>> | 98% | 44,875 psi | 69% | 2877 fps | 95% |
| Ramshot TAC | <<locked>> | 82% | 44,556 psi | 69% | 2779 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,785 psi | 63% | 2740 fps | 97.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,281 psi | 70% | 2776 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,831 psi | 40% | 1657 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,007 psi | 72% | 2822 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 47,485 psi | 73% | 2841 fps | 95.4% |
| ReloadSwiss RS 52 | 50 gr | 80% | 36,738 psi | 57% | 2726 fps | 95.5% |
| ReloadSwiss RS 60 | 50.8 gr | 80% | 30,255 psi | 47% | 2575 fps | 96.4% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,305 psi | 60% | 2789 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,134 psi | 66% | 2871 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 42,308 psi | 65% | 2717 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 36,782 psi | 57% | 2612 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 32,213 psi | 50% | 2556 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 98% | 52,794 psi | 81% | 2923 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 44,643 psi | 69% | 2792 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,087 psi | 59% | 2687 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 34,925 psi | 54% | 2589 fps | 97.1% |
| Shooters World SW4350 | <<locked>> | 98% | 47,921 psi | 74% | 2871 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,719 psi | 76% | 2841 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 55,027 psi | 85% | 2585 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,533 psi | 81% | 2920 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,955 psi | 55% | 2671 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,719 psi | 76% | 2831 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 42,380 psi | 65% | 2746 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,218 psi | 59% | 2674 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,437 psi | 62% | 2635 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,257 psi | 51% | 2490 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 50,734 psi | 78% | 2844 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 44,875 psi | 69% | 2805 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 39,929 psi | 61% | 2635 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 39,392 psi | 61% | 2690 fps | 96.9% |
| Somchem S355 | <<locked>> | 82% | 33,446 psi | 51% | 2572 fps | 95.6% |
| Somchem S365 | <<locked>> | 90% | 31,038 psi | 48% | 2598 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 45,876 psi | 71% | 2713 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,683 psi | 63% | 2635 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,882 psi | 55% | 2608 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,825 psi | 57% | 2612 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 80% | 29,646 psi | 46% | 2454 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 92% | 39,218 psi | 60% | 2723 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 41,553 psi | 64% | 2720 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 80% | 35,418 psi | 54% | 2595 fps | 99% |
| Vihtavuori N550 | <<locked>> | 94% | 41,002 psi | 63% | 2779 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,561 psi | 50% | 2533 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 40,930 psi | 63% | 2762 fps | 99.2% |
| Winchester 760 | <<locked>> | 98% | 49,139 psi | 76% | 2953 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,536 psi | 58% | 2677 fps | 97.1% |
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 113 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 150gr | Barnes TSX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,811 fps to 3,166 fps. Accurate 4350 gives the best case fill at 100 %, and 113 of the 113 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 46–90 %, 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-17 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, ReloadSwiss RS 60 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 150gr | Barnes TSX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-26, IMR 4350, Norma 204 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.