Load Specifications
Bullet Manufacturer:Warner Tool Co
Bullet Weight:160 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:1:10.5
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 160gr | Warner Tool Co. Flat Line bullet and 105 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 60 and ReloadSwiss RS 52.
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% | 57,551 psi | 89% | 2812 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,941 psi | 86% | 2838 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,622 psi | 86% | 2835 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 58,030 psi | 89% | 2904 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,651 psi | 86% | 2825 fps | 96.1% |
| Accurate 4064 | <<locked>> | 94% | 55,274 psi | 85% | 2874 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,039 psi | 79% | 2890 fps | 98.7% |
| Accurate LT-30 | <<locked>> | 82% | 56,608 psi | 87% | 2756 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 57,029 psi | 88% | 2782 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,594 psi | 87% | 2910 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 57,334 psi | 88% | 2904 fps | 99.6% |
| ADI AR 2219 | <<locked>> | 82% | 57,870 psi | 89% | 2881 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,637 psi | 86% | 2864 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 56,188 psi | 86% | 2844 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 57,551 psi | 89% | 2972 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 56,304 psi | 87% | 3031 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 57,203 psi | 88% | 2930 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 57,159 psi | 88% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 57,870 psi | 89% | 2953 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,864 psi | 77% | 2897 fps | 98.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 58,160 psi | 89% | 3051 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,447 psi | 55% | 2618 fps | 96.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,941 psi | 86% | 2753 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,449 psi | 87% | 2927 fps | 99.4% |
| Bofors RP3 | <<locked>> | 96% | 57,841 psi | 89% | 2946 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 58,073 psi | 89% | 2904 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 57,522 psi | 88% | 2848 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 58,639 psi | 90% | 2946 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,855 psi | 87% | 2995 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 56,318 psi | 87% | 2861 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 57,464 psi | 88% | 2887 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,390 psi | 85% | 2904 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,273 psi | 83% | 2943 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 90% | 57,145 psi | 88% | 2923 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,890 psi | 71% | 2776 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,347 psi | 87% | 2956 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 55,898 psi | 86% | 2982 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,172 psi | 54% | 1745 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 58,581 psi | 90% | 2927 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 56,681 psi | 87% | 2904 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,971 psi | 88% | 2890 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,551 psi | 89% | 2871 fps | 97.3% |
| IMR 4198 | <<locked>> | 84% | 57,145 psi | 88% | 2772 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 56,782 psi | 87% | 2890 fps | 97.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,399 psi | 74% | 2828 fps | 98.4% |
| IMR 4895 | <<locked>> | 92% | 55,898 psi | 86% | 2933 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 88% | 55,637 psi | 86% | 2864 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 56,115 psi | 86% | 2854 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 56,144 psi | 86% | 2890 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,507 psi | 87% | 2841 fps | 99.8% |
| Lovex S062 | <<locked>> | 94% | 56,507 psi | 87% | 2887 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,796 psi | 86% | 2881 fps | 98.2% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,040 psi | 82% | 2858 fps | 96.8% |
| Norma 201 | <<locked>> | 92% | 58,798 psi | 90% | 2907 fps | 100% |
| Norma 202 | <<locked>> | 90% | 55,637 psi | 86% | 2858 fps | 100% |
| Norma 203B | <<locked>> | 94% | 57,000 psi | 88% | 2936 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 50,560 psi | 78% | 2881 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 94% | 57,798 psi | 89% | 2966 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,545 psi | 76% | 2871 fps | 96.8% |
| Ramshot TAC | <<locked>> | 88% | 56,101 psi | 86% | 2877 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,434 psi | 85% | 2900 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,811 psi | 87% | 2867 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 54% | 1781 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 58,813 psi | 90% | 2897 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,854 psi | 86% | 2884 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 58,378 psi | 90% | 3022 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 58,044 psi | 89% | 3058 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,676 psi | 78% | 2910 fps | 98.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,198 psi | 79% | 2933 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 88% | 56,449 psi | 87% | 2844 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,593 psi | 86% | 2851 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 57,392 psi | 88% | 2933 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 58,073 psi | 89% | 2904 fps | 96.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,796 psi | 86% | 2881 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 56,144 psi | 86% | 2890 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 56,507 psi | 87% | 2887 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,040 psi | 82% | 2858 fps | 96.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,882 psi | 84% | 2815 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 58,175 psi | 89% | 2894 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,695 psi | 86% | 2943 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 58,117 psi | 89% | 2838 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 58,218 psi | 90% | 2913 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 58,552 psi | 90% | 2933 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 57,058 psi | 88% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,898 psi | 88% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 56,623 psi | 87% | 2835 fps | 97.1% |
| Somchem S321 | <<locked>> | 86% | 57,217 psi | 88% | 2900 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 56,449 psi | 87% | 2799 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 57,725 psi | 89% | 2904 fps | 99.8% |
| Somchem S355 | <<locked>> | 98% | 57,841 psi | 89% | 2930 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,063 psi | 69% | 2831 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 56,826 psi | 87% | 2762 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 57,087 psi | 88% | 2782 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 58,450 psi | 90% | 2864 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 56,362 psi | 87% | 2838 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,883 psi | 86% | 2861 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,142 psi | 82% | 2881 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 88% | 56,376 psi | 87% | 2867 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 57,914 psi | 89% | 2881 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,228 psi | 80% | 2887 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,927 psi | 58% | 2697 fps | 96.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,172 psi | 83% | 2867 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 55,811 psi | 86% | 2910 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,549 psi | 84% | 2946 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 92% | 58,566 psi | 90% | 2943 fps | 100% |
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% | 44,889 psi | 69% | 2631 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,052 psi | 75% | 2740 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,434 psi | 58% | 2546 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,193 psi | 68% | 2694 fps | 99.9% |
| Accurate 2700 | <<locked>> | 90% | 52,185 psi | 80% | 2769 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 35,418 psi | 54% | 2533 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 36,100 psi | 56% | 2605 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 53,055 psi | 82% | 2707 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 53,447 psi | 82% | 2733 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,408 psi | 64% | 2648 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 35,230 psi | 54% | 2493 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 54,128 psi | 83% | 2831 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,468 psi | 67% | 2661 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 42,888 psi | 66% | 2654 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,604 psi | 78% | 2864 fps | 99.7% |
| Alliant Power Pro 2000-MR | 49.7 gr | 80% | 37,318 psi | 57% | 2654 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,505 psi | 53% | 2513 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,589 psi | 78% | 2726 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,246 psi | 57% | 2579 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,651 psi | 56% | 2618 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 82% | 31,865 psi | 49% | 2523 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 33,257 psi | 51% | 2562 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,344 psi | 81% | 2707 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,335 psi | 62% | 2644 fps | 96.6% |
| Bofors RP3 | <<locked>> | 80% | 34,011 psi | 52% | 2516 fps | 97% |
| Bofors RP7 | <<locked>> | 96% | 51,517 psi | 79% | 2802 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,382 psi | 70% | 2654 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,800 psi | 64% | 2677 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,035 psi | 71% | 2815 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 80% | 49,501 psi | 76% | 2762 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,488 psi | 78% | 2785 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 40,001 psi | 62% | 2628 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 96% | 47,790 psi | 74% | 2831 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 41,771 psi | 64% | 2661 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,604 psi | 49% | 2464 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,434 psi | 58% | 2621 fps | 98% |
| Hodgdon Superformance | <<locked>> | 98% | 52,025 psi | 80% | 2920 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,020 psi | 40% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,059 psi | 62% | 2612 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 40,973 psi | 63% | 2661 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,898 psi | 57% | 2530 fps | 96.3% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,790 psi | 74% | 2710 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 50,821 psi | 78% | 2687 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 92% | 47,195 psi | 73% | 2730 fps | 95% |
| IMR 4831 | <<locked>> | 92% | 37,318 psi | 57% | 2615 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 38,130 psi | 59% | 2608 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 43,468 psi | 67% | 2661 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 48,965 psi | 75% | 2746 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,103 psi | 62% | 2628 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 41,742 psi | 64% | 2589 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 36,709 psi | 56% | 2536 fps | 98% |
| Lovex S065 | <<locked>> | 90% | 41,118 psi | 63% | 2625 fps | 95% |
| Lovex S070 | <<locked>> | 96% | 46,862 psi | 72% | 2753 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 40,422 psi | 62% | 2598 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 40,698 psi | 63% | 2615 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 36,637 psi | 56% | 2566 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 36,564 psi | 56% | 2608 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 35,955 psi | 55% | 2572 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 96% | 43,569 psi | 67% | 2759 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 43,250 psi | 67% | 2654 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,656 psi | 66% | 2680 fps | 98.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,862 psi | 72% | 2707 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,281 psi | 40% | 1591 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,689 psi | 75% | 2746 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 46,108 psi | 71% | 2720 fps | 95.6% |
| ReloadSwiss RS 52 | 48.2 gr | 80% | 38,595 psi | 59% | 2674 fps | 96.7% |
| ReloadSwiss RS 60 | 48.9 gr | 80% | 31,633 psi | 49% | 2530 fps | 97.7% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,464 psi | 59% | 2677 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,843 psi | 64% | 2749 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 44,324 psi | 68% | 2651 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,609 psi | 59% | 2556 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 32,010 psi | 49% | 2461 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 96% | 51,517 psi | 79% | 2802 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,118 psi | 63% | 2625 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,103 psi | 62% | 2628 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 36,709 psi | 56% | 2536 fps | 98% |
| Shooters World SW4350 | <<locked>> | 96% | 46,862 psi | 72% | 2753 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,401 psi | 79% | 2762 fps | 99.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 54,563 psi | 84% | 2841 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,996 psi | 51% | 2507 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,358 psi | 79% | 2746 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,510 psi | 64% | 2628 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,871 psi | 61% | 2615 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,974 psi | 65% | 2562 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,693 psi | 53% | 2428 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 49,356 psi | 76% | 2726 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 46,673 psi | 72% | 2740 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 41,466 psi | 64% | 2566 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,060 psi | 63% | 2628 fps | 97.8% |
| Somchem S355 | <<locked>> | 80% | 32,866 psi | 51% | 2464 fps | 96% |
| Somchem S365 | <<locked>> | 86% | 28,790 psi | 44% | 2444 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 47,485 psi | 73% | 2631 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,206 psi | 65% | 2562 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,652 psi | 58% | 2543 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,609 psi | 59% | 2552 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 31,357 psi | 48% | 2408 fps | 96.9% |
| Vihtavuori N160 | <<locked>> | 90% | 38,406 psi | 59% | 2615 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 43,439 psi | 67% | 2657 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 37,072 psi | 57% | 2539 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 37,623 psi | 58% | 2612 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 98% | 35,447 psi | 55% | 2638 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,807 psi | 49% | 2428 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 42,511 psi | 65% | 2697 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 47,790 psi | 74% | 2831 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,131 psi | 60% | 2615 fps | 98% |
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 105 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 160gr | Warner Tool Co. Flat Line. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,058 fps; across all powders the maximum-charge window runs from 1,745 fps to 3,058 fps. Accurate 4350 gives the best case fill at 100 %, and 105 of the 105 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 160.0 gr projectile in 0.308" calls for a 1:10.5 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 60, ReloadSwiss RS 52 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 160gr | Warner Tool Co. Flat Line 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.