Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:156 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 | 155.8gr | Peregrine Glider (Glider GRM) 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 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>> | 90% | 58,697 psi | 90% | 2871 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 58,784 psi | 90% | 2979 fps | 99.5% |
| Accurate 2460 | <<locked>> | 86% | 57,101 psi | 88% | 2897 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,999 psi | 86% | 2884 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 55,405 psi | 85% | 2910 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 57,145 psi | 88% | 2881 fps | 96% |
| Accurate 4064 | <<locked>> | 96% | 55,666 psi | 86% | 2927 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,254 psi | 74% | 2884 fps | 98.1% |
| Accurate LT-30 | <<locked>> | 84% | 58,349 psi | 90% | 2818 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 58,798 psi | 90% | 2844 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 57,740 psi | 89% | 2969 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 55,303 psi | 85% | 2913 fps | 99.3% |
| ADI AR 2219 | <<locked>> | 82% | 55,782 psi | 86% | 2894 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 57,188 psi | 88% | 2927 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 57,421 psi | 88% | 2900 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 58,784 psi | 90% | 3035 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 57,856 psi | 89% | 3091 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 58,320 psi | 90% | 2986 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 58,392 psi | 90% | 2877 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 55,550 psi | 85% | 2956 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,805 psi | 74% | 2894 fps | 98.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 55,419 psi | 85% | 3051 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 57,551 psi | 89% | 2815 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 57,943 psi | 89% | 2986 fps | 99.4% |
| Bofors RP3 | <<locked>> | 98% | 58,769 psi | 90% | 2999 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 55,782 psi | 86% | 2907 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,622 psi | 86% | 2861 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 56,173 psi | 86% | 2956 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 58,305 psi | 90% | 3054 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 86% | 58,015 psi | 89% | 2927 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,288 psi | 85% | 2897 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 56,739 psi | 87% | 2963 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 51,938 psi | 80% | 2940 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 92% | 58,262 psi | 90% | 2979 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,787 psi | 67% | 2772 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 57,421 psi | 88% | 3012 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,577 psi | 53% | 1759 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,507 psi | 87% | 2933 fps | 99.9% |
| IMR 3031 | <<locked>> | 92% | 57,798 psi | 89% | 2963 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 58,305 psi | 90% | 2946 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,579 psi | 86% | 2877 fps | 96.7% |
| IMR 4198 | <<locked>> | 84% | 55,376 psi | 85% | 2792 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 58,102 psi | 89% | 2946 fps | 97% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,006 psi | 71% | 2825 fps | 97.7% |
| IMR 4895 | <<locked>> | 94% | 56,942 psi | 88% | 2989 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 90% | 57,188 psi | 88% | 2927 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 57,319 psi | 88% | 2913 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 57,305 psi | 88% | 2946 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 57,943 psi | 89% | 2900 fps | 99.8% |
| Lovex S062 | <<locked>> | 96% | 57,551 psi | 89% | 2943 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,185 psi | 82% | 2877 fps | 97.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 50,720 psi | 78% | 2858 fps | 96% |
| Norma 200 | <<locked>> | 82% | 58,189 psi | 90% | 2848 fps | 100% |
| Norma 201 | <<locked>> | 92% | 56,376 psi | 87% | 2913 fps | 100% |
| Norma 202 | <<locked>> | 92% | 57,058 psi | 88% | 2920 fps | 100% |
| Norma 203B | <<locked>> | 96% | 58,363 psi | 90% | 2999 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 48,196 psi | 74% | 2881 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 94% | 55,419 psi | 85% | 2969 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,384 psi | 73% | 2867 fps | 96% |
| Ramshot TAC | <<locked>> | 90% | 57,885 psi | 89% | 2943 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 90% | 57,130 psi | 88% | 2963 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 88% | 58,639 psi | 90% | 2930 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,925 psi | 54% | 1801 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 56,724 psi | 87% | 2907 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 57,305 psi | 88% | 2940 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 55,898 psi | 86% | 3025 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,347 psi | 85% | 3058 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,095 psi | 74% | 2904 fps | 97.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,081 psi | 76% | 2930 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 90% | 56,898 psi | 88% | 2894 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 56,579 psi | 87% | 2907 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 58,668 psi | 90% | 2989 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 55,782 psi | 86% | 2907 fps | 96.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,185 psi | 82% | 2877 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 57,305 psi | 88% | 2946 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 57,551 psi | 89% | 2943 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 50,720 psi | 78% | 2858 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 56,826 psi | 87% | 2881 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 57,812 psi | 89% | 2552 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,999 psi | 86% | 2904 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 57,058 psi | 88% | 3002 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,043 psi | 86% | 2854 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 55,854 psi | 86% | 2913 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 56,347 psi | 87% | 2940 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 58,537 psi | 90% | 2858 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 58,349 psi | 90% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 53,940 psi | 83% | 2831 fps | 96.3% |
| Somchem S321 | <<locked>> | 88% | 58,624 psi | 90% | 2963 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 57,580 psi | 89% | 2854 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,492 psi | 85% | 2910 fps | 99.6% |
| Somchem S355 | <<locked>> | 98% | 55,376 psi | 85% | 2936 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,801 psi | 66% | 2825 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 88% | 58,233 psi | 90% | 2822 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 58,523 psi | 90% | 2841 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,956 psi | 86% | 2874 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 57,551 psi | 89% | 2897 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 57,334 psi | 88% | 2920 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,763 psi | 78% | 2881 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 90% | 57,682 psi | 89% | 2923 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 55,651 psi | 86% | 2890 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 49,835 psi | 77% | 2884 fps | 98% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,822 psi | 80% | 2867 fps | 99.7% |
| Winchester 748 | <<locked>> | 90% | 57,232 psi | 88% | 2972 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 52,170 psi | 80% | 2946 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,927 psi | 86% | 2946 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% | 42,772 psi | 66% | 2635 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 54,897 psi | 84% | 2920 fps | 99.2% |
| Accurate 2460 | <<locked>> | 80% | 46,746 psi | 72% | 2743 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,838 psi | 54% | 2536 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,887 psi | 64% | 2694 fps | 99.7% |
| Accurate 2700 | <<locked>> | 92% | 53,534 psi | 82% | 2828 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 32,982 psi | 51% | 2520 fps | 99.1% |
| Accurate 4350 | <<locked>> | 94% | 38,885 psi | 60% | 2707 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 51,445 psi | 79% | 2723 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,822 psi | 80% | 2746 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,291 psi | 60% | 2641 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 35,723 psi | 55% | 2543 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 52,098 psi | 80% | 2841 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,394 psi | 64% | 2657 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 40,756 psi | 63% | 2661 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,124 psi | 74% | 2861 fps | 99.3% |
| Alliant Power Pro 2000-MR | 50.9 gr | 82% | 38,058 psi | 59% | 2710 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,634 psi | 50% | 2507 fps | 96% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,472 psi | 75% | 2736 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,143 psi | 54% | 2566 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,101 psi | 57% | 2661 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 86% | 34,476 psi | 53% | 2628 fps | 96% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,604 psi | 78% | 2720 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,450 psi | 59% | 2641 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 31,676 psi | 49% | 2497 fps | 95.8% |
| Bofors RP7 | <<locked>> | 98% | 52,504 psi | 81% | 2854 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,410 psi | 67% | 2657 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,740 psi | 61% | 2674 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,671 psi | 67% | 2808 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 80% | 47,529 psi | 73% | 2772 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,167 psi | 74% | 2792 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 40,408 psi | 62% | 2674 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 98% | 48,530 psi | 75% | 2881 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 39,610 psi | 61% | 2654 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,837 psi | 52% | 2556 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,563 psi | 55% | 2615 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 39% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,305 psi | 59% | 2608 fps | 97.4% |
| IMR 3031 | <<locked>> | 80% | 38,885 psi | 60% | 2664 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,186 psi | 54% | 2523 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 88% | 48,834 psi | 75% | 2766 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 49,124 psi | 76% | 2703 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 51,358 psi | 79% | 2838 fps | 95.7% |
| IMR 4831 | <<locked>> | 94% | 37,521 psi | 58% | 2657 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 35,969 psi | 55% | 2598 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 41,394 psi | 64% | 2657 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 46,369 psi | 71% | 2746 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 37,869 psi | 58% | 2625 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 40,103 psi | 62% | 2592 fps | 97.4% |
| Lovex S062 | <<locked>> | 80% | 34,795 psi | 54% | 2530 fps | 97.3% |
| Lovex S065 | <<locked>> | 94% | 44,164 psi | 68% | 2720 fps | 95.6% |
| Lovex S070 | <<locked>> | 98% | 47,442 psi | 73% | 2799 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 54,462 psi | 84% | 2799 fps | 100% |
| Norma 201 | <<locked>> | 80% | 38,392 psi | 59% | 2595 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 38,740 psi | 60% | 2615 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 34,490 psi | 53% | 2556 fps | 95.7% |
| Norma URP | <<locked>> | 94% | 39,465 psi | 61% | 2710 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 34,127 psi | 53% | 2562 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 98% | 44,382 psi | 68% | 2808 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 41,437 psi | 64% | 2654 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,524 psi | 62% | 2674 fps | 97.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,020 psi | 69% | 2710 fps | 98.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,846 psi | 40% | 1611 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,514 psi | 72% | 2749 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 47,094 psi | 72% | 2776 fps | 95.5% |
| ReloadSwiss RS 52 | 48.2 gr | 80% | 36,535 psi | 56% | 2664 fps | 95.7% |
| ReloadSwiss RS 60 | 48.9 gr | 80% | 29,994 psi | 46% | 2513 fps | 96.6% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,914 psi | 60% | 2723 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 42,685 psi | 66% | 2799 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 42,047 psi | 65% | 2651 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 36,608 psi | 56% | 2549 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 31,995 psi | 49% | 2497 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 98% | 52,504 psi | 81% | 2854 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 44,164 psi | 68% | 2720 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,869 psi | 58% | 2625 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 34,795 psi | 54% | 2530 fps | 97.3% |
| Shooters World SW4350 | <<locked>> | 98% | 47,442 psi | 73% | 2799 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,414 psi | 76% | 2769 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 55,056 psi | 85% | 2520 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,185 psi | 80% | 2848 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,417 psi | 51% | 2552 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,400 psi | 76% | 2759 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,204 psi | 60% | 2618 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,043 psi | 59% | 2612 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,190 psi | 62% | 2569 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,040 psi | 51% | 2428 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 50,531 psi | 78% | 2779 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 44,614 psi | 69% | 2740 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 39,595 psi | 61% | 2569 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 39,175 psi | 60% | 2625 fps | 97% |
| Somchem S355 | <<locked>> | 82% | 33,185 psi | 51% | 2510 fps | 95.8% |
| Somchem S365 | <<locked>> | 88% | 28,761 psi | 44% | 2477 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 45,643 psi | 70% | 2644 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,422 psi | 62% | 2569 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,636 psi | 55% | 2546 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,506 psi | 56% | 2549 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 29,356 psi | 45% | 2395 fps | 95.8% |
| Vihtavuori N160 | <<locked>> | 92% | 38,812 psi | 60% | 2657 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 41,292 psi | 64% | 2651 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 35,027 psi | 54% | 2530 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 92% | 38,043 psi | 59% | 2657 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,213 psi | 50% | 2474 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 40,524 psi | 62% | 2697 fps | 99.2% |
| Winchester 760 | <<locked>> | 98% | 48,805 psi | 75% | 2887 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,217 psi | 57% | 2612 fps | 97.2% |
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 105 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 155.8gr | Peregrine Glider (Glider GRM). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,091 fps; across all powders the maximum-charge window runs from 1,759 fps to 3,091 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 53–90 %, leaving at least 10 % headroom. The 156.0 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 52, ReloadSwiss RS 60 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 155.8gr | Peregrine Glider (Glider GRM) 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.