Load Specifications
Bullet Manufacturer:Rhino Bullets
Bullet Weight:165 gr
Bullet Diameter:0.307"
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:1:11.5
Load data in caliber .300 Rem. SA Ultra Mag. with .307 | 165gr | Rhino Penetrator bullet and 107 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 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>> | 86% | 55,463 psi | 85% | 2743 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 57,580 psi | 89% | 2818 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 57,479 psi | 88% | 2812 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,956 psi | 86% | 2835 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 57,188 psi | 88% | 2812 fps | 96.8% |
| Accurate 4064 | <<locked>> | 94% | 57,087 psi | 88% | 2854 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,939 psi | 81% | 2881 fps | 99.2% |
| Accurate LT-30 | <<locked>> | 82% | 57,653 psi | 89% | 2730 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 58,073 psi | 89% | 2756 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 58,204 psi | 90% | 2894 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 55,521 psi | 85% | 2838 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 88% | 57,188 psi | 88% | 2844 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 57,711 psi | 89% | 2818 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,492 psi | 85% | 2900 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 57,696 psi | 89% | 3012 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,216 psi | 85% | 2858 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 58,668 psi | 90% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,854 psi | 86% | 2881 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,300 psi | 79% | 2884 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,115 psi | 86% | 2982 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,419 psi | 56% | 2612 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,422 psi | 62% | 2759 fps | 96.2% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 56,985 psi | 88% | 2726 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 58,102 psi | 89% | 2910 fps | 99.7% |
| Bofors RP3 | <<locked>> | 94% | 55,811 psi | 86% | 2877 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,231 psi | 87% | 2841 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,695 psi | 86% | 2782 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 56,594 psi | 87% | 2877 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 58,711 psi | 90% | 2979 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 84% | 57,928 psi | 89% | 2838 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,390 psi | 85% | 2818 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 57,087 psi | 88% | 2887 fps | 99.2% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,043 psi | 86% | 2930 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 98% | 57,246 psi | 88% | 2897 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 90% | 58,755 psi | 90% | 2904 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,427 psi | 73% | 2762 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 57,812 psi | 89% | 2933 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 57,580 psi | 89% | 2972 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 54% | 1719 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,449 psi | 87% | 2854 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 58,450 psi | 90% | 2884 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 58,537 psi | 90% | 2871 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,376 psi | 85% | 2802 fps | 97.3% |
| IMR 4198 | <<locked>> | 84% | 58,639 psi | 90% | 2749 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,779 psi | 81% | 2812 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 98% | 58,305 psi | 90% | 2877 fps | 97.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,082 psi | 77% | 2818 fps | 98.9% |
| IMR 4895 | <<locked>> | 92% | 57,261 psi | 88% | 2913 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 57,188 psi | 88% | 2844 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 57,435 psi | 88% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 57,870 psi | 89% | 2867 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 57,609 psi | 89% | 2818 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 58,088 psi | 89% | 2867 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 57,072 psi | 88% | 2861 fps | 98.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,650 psi | 84% | 2848 fps | 97.4% |
| Norma 201 | <<locked>> | 90% | 56,681 psi | 87% | 2838 fps | 100% |
| Norma 202 | <<locked>> | 90% | 57,203 psi | 88% | 2838 fps | 100% |
| Norma 203B | <<locked>> | 94% | 58,682 psi | 90% | 2920 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 52,286 psi | 80% | 2871 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 92% | 55,535 psi | 85% | 2894 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,097 psi | 79% | 2861 fps | 97.5% |
| Ramshot TAC | <<locked>> | 88% | 57,566 psi | 89% | 2864 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 57,043 psi | 88% | 2881 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 58,276 psi | 90% | 2848 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,636 psi | 55% | 1759 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 56,652 psi | 87% | 2825 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 57,450 psi | 88% | 2871 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,405 psi | 87% | 2949 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,695 psi | 86% | 2982 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,518 psi | 81% | 2900 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,736 psi | 81% | 2923 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 88% | 57,682 psi | 89% | 2818 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 57,116 psi | 88% | 2831 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,666 psi | 86% | 2867 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 56,231 psi | 87% | 2841 fps | 96.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 57,072 psi | 88% | 2861 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 90% | 57,870 psi | 89% | 2867 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 58,088 psi | 89% | 2867 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,650 psi | 84% | 2848 fps | 97.4% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,362 psi | 87% | 2795 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 57,450 psi | 88% | 2930 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,159 psi | 86% | 2772 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,811 psi | 86% | 2838 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,521 psi | 87% | 2864 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 58,552 psi | 90% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 58,421 psi | 90% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 57,899 psi | 89% | 2818 fps | 97.6% |
| Somchem S321 | <<locked>> | 86% | 58,813 psi | 90% | 2884 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 57,653 psi | 89% | 2772 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,376 psi | 85% | 2831 fps | 99.8% |
| Somchem S355 | <<locked>> | 96% | 56,101 psi | 86% | 2864 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,659 psi | 72% | 2818 fps | 100% |
| Vihtavuori N130 | <<locked>> | 86% | 58,276 psi | 90% | 2740 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 58,595 psi | 90% | 2759 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 56,652 psi | 87% | 2799 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 57,595 psi | 89% | 2812 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 57,580 psi | 89% | 2841 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,839 psi | 84% | 2867 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 88% | 57,957 psi | 89% | 2848 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 55,898 psi | 86% | 2815 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,925 psi | 83% | 2874 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,421 psi | 61% | 2694 fps | 97.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,709 psi | 86% | 2851 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 57,551 psi | 89% | 2894 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 56,333 psi | 87% | 2933 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,561 psi | 50% | 2589 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,217 psi | 86% | 2871 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% | 46,209 psi | 71% | 2612 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,546 psi | 78% | 2720 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,798 psi | 60% | 2530 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,585 psi | 70% | 2680 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 49,995 psi | 77% | 2700 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 36,695 psi | 56% | 2520 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 34,925 psi | 54% | 2543 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 54,346 psi | 84% | 2684 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 54,766 psi | 84% | 2713 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 42,424 psi | 65% | 2631 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 36,042 psi | 55% | 2480 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,469 psi | 68% | 2641 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 44,411 psi | 68% | 2638 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,851 psi | 80% | 2844 fps | 99.9% |
| Alliant Power Pro 2000-MR | 49.9 gr | 80% | 38,479 psi | 59% | 2651 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,447 psi | 55% | 2500 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,996 psi | 80% | 2703 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,203 psi | 59% | 2566 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,592 psi | 55% | 2559 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 30,661 psi | 47% | 2457 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,401 psi | 50% | 2507 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,594 psi | 58% | 2690 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 53,635 psi | 83% | 2684 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,568 psi | 64% | 2631 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 35,012 psi | 54% | 2503 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 49,617 psi | 76% | 2736 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,354 psi | 71% | 2635 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,163 psi | 66% | 2664 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,297 psi | 73% | 2799 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 80% | 50,981 psi | 78% | 2743 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,692 psi | 80% | 2762 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,392 psi | 59% | 2559 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 45,963 psi | 71% | 2762 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 96% | 53,693 psi | 83% | 2841 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 42,757 psi | 66% | 2641 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,560 psi | 47% | 2402 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,667 psi | 59% | 2608 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 96% | 49,893 psi | 77% | 2848 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,252 psi | 40% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,205 psi | 63% | 2598 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 42,163 psi | 65% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,826 psi | 58% | 2513 fps | 96.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,803 psi | 70% | 2641 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 52,170 psi | 80% | 2664 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 49,443 psi | 76% | 2756 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,513 psi | 70% | 2664 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 36,129 psi | 56% | 2552 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 39,088 psi | 60% | 2595 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 44,469 psi | 68% | 2641 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 50,169 psi | 77% | 2726 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,234 psi | 63% | 2612 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,656 psi | 66% | 2572 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 37,666 psi | 58% | 2520 fps | 98.5% |
| Lovex S065 | <<locked>> | 88% | 39,740 psi | 61% | 2562 fps | 95.1% |
| Lovex S070 | <<locked>> | 94% | 45,237 psi | 70% | 2687 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 41,626 psi | 64% | 2589 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 41,684 psi | 64% | 2595 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,623 psi | 58% | 2552 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 35,360 psi | 54% | 2546 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 37,086 psi | 57% | 2562 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 42,148 psi | 65% | 2694 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 44,425 psi | 68% | 2644 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,729 psi | 67% | 2664 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,138 psi | 74% | 2690 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,542 psi | 41% | 1575 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,806 psi | 77% | 2726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,295 psi | 68% | 2651 fps | 95.5% |
| ReloadSwiss RS 52 | 48.3 gr | 80% | 39,697 psi | 61% | 2661 fps | 97.4% |
| ReloadSwiss RS 60 | 49.1 gr | 80% | 32,634 psi | 50% | 2526 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,260 psi | 57% | 2618 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,219 psi | 62% | 2680 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 45,600 psi | 70% | 2635 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,566 psi | 61% | 2539 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 32,967 psi | 51% | 2448 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 94% | 49,617 psi | 76% | 2736 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,740 psi | 61% | 2562 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,234 psi | 63% | 2612 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,666 psi | 58% | 2520 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 45,237 psi | 70% | 2687 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,779 psi | 81% | 2746 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,881 psi | 52% | 2493 fps | 96% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,794 psi | 81% | 2726 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,496 psi | 65% | 2615 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,872 psi | 63% | 2598 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,134 psi | 66% | 2546 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,737 psi | 55% | 2415 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,686 psi | 69% | 2612 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 48,051 psi | 74% | 2723 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,685 psi | 66% | 2549 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,351 psi | 65% | 2618 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 33,939 psi | 52% | 2457 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 27,876 psi | 43% | 2385 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 48,776 psi | 75% | 2612 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,395 psi | 67% | 2543 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,914 psi | 60% | 2530 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,552 psi | 61% | 2533 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,227 psi | 50% | 2395 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 37,130 psi | 57% | 2549 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 44,454 psi | 68% | 2638 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 38,029 psi | 59% | 2520 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 36,405 psi | 56% | 2549 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 34,577 psi | 53% | 2582 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,589 psi | 47% | 2365 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 43,918 psi | 68% | 2680 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 46,166 psi | 71% | 2766 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,560 psi | 47% | 2520 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,408 psi | 62% | 2605 fps | 98.5% |
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 107 powders for .300 Rem. SA Ultra Mag. loaded with the .307 | 165gr | Rhino Penetrator. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,719 fps to 3,012 fps. Accurate 4350 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.307" calls for a 1:11.5 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, ReloadSwiss RS 52 rank at the top here: for .300 Rem. SA Ultra Mag. with the .307 | 165gr | Rhino Penetrator 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.