Load Specifications
Bullet Manufacturer:MRR
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 | MRR Green Long Range bullet and 106 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% | 55,579 psi | 86% | 2789 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 58,001 psi | 89% | 2871 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 56,652 psi | 87% | 2851 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 55,985 psi | 86% | 2881 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 57,769 psi | 89% | 2854 fps | 96.4% |
| Accurate 4064 | <<locked>> | 96% | 56,666 psi | 87% | 2897 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,994 psi | 75% | 2861 fps | 98.4% |
| Accurate LT-30 | <<locked>> | 84% | 58,610 psi | 90% | 2782 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,579 psi | 86% | 2762 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 58,566 psi | 90% | 2943 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 96% | 55,796 psi | 86% | 2881 fps | 99.5% |
| ADI AR 2219 | <<locked>> | 82% | 56,144 psi | 86% | 2861 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 57,667 psi | 89% | 2894 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 57,928 psi | 89% | 2867 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,651 psi | 86% | 2946 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 58,566 psi | 90% | 3064 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,463 psi | 85% | 2907 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,521 psi | 85% | 2799 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,115 psi | 86% | 2927 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,356 psi | 74% | 2871 fps | 98.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,231 psi | 87% | 3025 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 58,030 psi | 89% | 2782 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 58,595 psi | 90% | 2956 fps | 99.5% |
| Bofors RP3 | <<locked>> | 96% | 55,869 psi | 86% | 2920 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 56,405 psi | 87% | 2881 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,275 psi | 87% | 2831 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 56,797 psi | 87% | 2923 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,129 psi | 85% | 2969 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 86% | 58,450 psi | 90% | 2890 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,086 psi | 86% | 2871 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,392 psi | 88% | 2933 fps | 99% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,634 psi | 81% | 2917 fps | 96.5% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 57,508 psi | 88% | 2936 fps | 96% |
| Hodgdon H4895 | <<locked>> | 90% | 55,405 psi | 85% | 2900 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,338 psi | 68% | 2746 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 58,117 psi | 89% | 2982 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,186 psi | 83% | 2953 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,824 psi | 54% | 1739 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,985 psi | 88% | 2904 fps | 99.9% |
| IMR 3031 | <<locked>> | 92% | 58,740 psi | 90% | 2933 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,361 psi | 85% | 2867 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,043 psi | 86% | 2848 fps | 97% |
| IMR 4198 | <<locked>> | 84% | 55,854 psi | 86% | 2759 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 58,726 psi | 90% | 2917 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,615 psi | 72% | 2802 fps | 98% |
| IMR 4895 | <<locked>> | 94% | 57,522 psi | 88% | 2959 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 57,667 psi | 89% | 2894 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 57,885 psi | 89% | 2881 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 57,957 psi | 89% | 2917 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 58,363 psi | 90% | 2867 fps | 99.9% |
| Lovex S062 | <<locked>> | 96% | 58,436 psi | 90% | 2913 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,795 psi | 83% | 2851 fps | 97.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,039 psi | 79% | 2828 fps | 96.3% |
| Norma 200 | <<locked>> | 82% | 58,479 psi | 90% | 2812 fps | 100% |
| Norma 201 | <<locked>> | 92% | 56,884 psi | 88% | 2881 fps | 100% |
| Norma 202 | <<locked>> | 92% | 57,537 psi | 89% | 2887 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,230 psi | 85% | 2913 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 48,559 psi | 75% | 2851 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 94% | 56,173 psi | 86% | 2943 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,080 psi | 74% | 2844 fps | 96.4% |
| Ramshot TAC | <<locked>> | 90% | 58,465 psi | 90% | 2913 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 57,740 psi | 89% | 2933 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,230 psi | 85% | 2844 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,954 psi | 54% | 1775 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,479 psi | 88% | 2881 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 57,986 psi | 89% | 2913 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,579 psi | 87% | 2995 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,115 psi | 86% | 3028 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,617 psi | 75% | 2877 fps | 98.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,487 psi | 76% | 2904 fps | 97.7% |
| Rottweil R 901 | <<locked>> | 90% | 57,638 psi | 89% | 2864 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,392 psi | 88% | 2881 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,419 psi | 85% | 2907 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 56,405 psi | 87% | 2881 fps | 96.4% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,795 psi | 83% | 2851 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 92% | 57,957 psi | 89% | 2917 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 58,436 psi | 90% | 2913 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,039 psi | 79% | 2828 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,276 psi | 88% | 2851 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 58,378 psi | 90% | 2523 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,420 psi | 87% | 2871 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 57,841 psi | 89% | 2976 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,666 psi | 87% | 2822 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,463 psi | 87% | 2887 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 56,942 psi | 88% | 2910 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,666 psi | 86% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,608 psi | 86% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,607 psi | 84% | 2808 fps | 96.7% |
| Somchem S321 | <<locked>> | 86% | 55,463 psi | 85% | 2881 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 58,030 psi | 89% | 2822 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,101 psi | 86% | 2881 fps | 99.7% |
| Somchem S355 | <<locked>> | 98% | 55,999 psi | 86% | 2907 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,424 psi | 67% | 2802 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 86% | 55,419 psi | 85% | 2746 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,767 psi | 86% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,840 psi | 87% | 2844 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 58,088 psi | 89% | 2864 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 57,696 psi | 89% | 2887 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,474 psi | 79% | 2854 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 90% | 58,523 psi | 90% | 2897 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 56,231 psi | 87% | 2861 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,270 psi | 77% | 2854 fps | 98.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,533 psi | 81% | 2844 fps | 99.8% |
| Winchester 748 | <<locked>> | 90% | 57,870 psi | 89% | 2940 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 52,634 psi | 81% | 2917 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 92% | 56,565 psi | 87% | 2920 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% | 43,236 psi | 67% | 2605 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,094 psi | 72% | 2710 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,331 psi | 54% | 2510 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,250 psi | 65% | 2664 fps | 99.8% |
| Accurate 2700 | <<locked>> | 92% | 54,070 psi | 83% | 2802 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 33,446 psi | 51% | 2497 fps | 99.3% |
| Accurate 4350 | <<locked>> | 92% | 36,840 psi | 57% | 2628 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 51,880 psi | 80% | 2690 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,286 psi | 80% | 2717 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,769 psi | 61% | 2618 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 36,158 psi | 56% | 2520 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 52,431 psi | 81% | 2808 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,872 psi | 64% | 2635 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 80% | 41,307 psi | 64% | 2631 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,718 psi | 75% | 2835 fps | 99.5% |
| Alliant Power Pro 2000-MR | 49.2 gr | 80% | 35,868 psi | 55% | 2621 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,069 psi | 51% | 2484 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,994 psi | 75% | 2707 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,578 psi | 55% | 2543 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,666 psi | 58% | 2644 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 32,547 psi | 50% | 2546 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,937 psi | 78% | 2687 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,783 psi | 60% | 2615 fps | 96.1% |
| Bofors RP3 | <<locked>> | 80% | 32,169 psi | 49% | 2477 fps | 96.3% |
| Bofors RP7 | <<locked>> | 96% | 49,574 psi | 76% | 2772 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,859 psi | 67% | 2628 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,103 psi | 62% | 2644 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,353 psi | 68% | 2785 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 80% | 48,080 psi | 74% | 2743 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,834 psi | 75% | 2762 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 38,290 psi | 59% | 2595 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 98% | 49,139 psi | 76% | 2858 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 98% | 53,809 psi | 83% | 2877 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 40,059 psi | 62% | 2628 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,097 psi | 49% | 2480 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,071 psi | 55% | 2592 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 98% | 50,270 psi | 77% | 2887 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,802 psi | 40% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,740 psi | 60% | 2585 fps | 97.7% |
| IMR 3031 | <<locked>> | 80% | 39,392 psi | 61% | 2635 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,592 psi | 55% | 2503 fps | 95.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,182 psi | 76% | 2736 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 49,516 psi | 76% | 2671 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 48,849 psi | 75% | 2759 fps | 95.3% |
| IMR 4831 | <<locked>> | 94% | 38,218 psi | 59% | 2638 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 36,405 psi | 56% | 2575 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 80% | 41,872 psi | 64% | 2635 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 80% | 47,007 psi | 72% | 2720 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 38,203 psi | 59% | 2595 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 40,509 psi | 62% | 2566 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 35,215 psi | 54% | 2507 fps | 97.6% |
| Lovex S065 | <<locked>> | 92% | 41,945 psi | 65% | 2644 fps | 95.2% |
| Lovex S070 | <<locked>> | 98% | 48,008 psi | 74% | 2776 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 55,042 psi | 85% | 2766 fps | 100% |
| Norma 201 | <<locked>> | 80% | 38,841 psi | 60% | 2572 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 39,204 psi | 60% | 2592 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 34,969 psi | 54% | 2533 fps | 96.1% |
| Norma URP | <<locked>> | 92% | 37,478 psi | 58% | 2631 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 34,432 psi | 53% | 2539 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 98% | 44,991 psi | 69% | 2785 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 41,771 psi | 64% | 2628 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,075 psi | 63% | 2651 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,295 psi | 70% | 2680 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,005 psi | 40% | 1588 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,079 psi | 72% | 2723 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 44,541 psi | 69% | 2694 fps | 95.1% |
| ReloadSwiss RS 52 | 47.7 gr | 80% | 36,883 psi | 57% | 2638 fps | 96.1% |
| ReloadSwiss RS 60 | 48.5 gr | 80% | 30,414 psi | 47% | 2497 fps | 97.1% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,436 psi | 61% | 2703 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,207 psi | 66% | 2779 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 42,525 psi | 65% | 2625 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 37,014 psi | 57% | 2526 fps | 98% |
| Rottweil R 903 | <<locked>> | 80% | 30,211 psi | 46% | 2418 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 96% | 49,574 psi | 76% | 2772 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 92% | 41,945 psi | 65% | 2644 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,203 psi | 59% | 2595 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 35,215 psi | 54% | 2507 fps | 97.6% |
| Shooters World SW4350 | <<locked>> | 98% | 48,008 psi | 74% | 2776 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,748 psi | 77% | 2740 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 55,259 psi | 85% | 2487 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,866 psi | 81% | 2822 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,721 psi | 52% | 2526 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,893 psi | 77% | 2726 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,784 psi | 61% | 2598 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,334 psi | 59% | 2585 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,582 psi | 62% | 2539 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,388 psi | 51% | 2405 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 47,659 psi | 73% | 2700 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 44,991 psi | 69% | 2710 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 40,030 psi | 62% | 2543 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,479 psi | 61% | 2598 fps | 97.3% |
| Somchem S355 | <<locked>> | 80% | 31,357 psi | 48% | 2431 fps | 95.3% |
| Somchem S365 | <<locked>> | 88% | 29,254 psi | 45% | 2464 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 46,064 psi | 71% | 2612 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,814 psi | 63% | 2543 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,071 psi | 55% | 2520 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,970 psi | 57% | 2523 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 29,733 psi | 46% | 2372 fps | 96.3% |
| Vihtavuori N160 | <<locked>> | 90% | 36,840 psi | 57% | 2579 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 41,785 psi | 64% | 2628 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 35,505 psi | 55% | 2507 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 38,508 psi | 59% | 2635 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,706 psi | 50% | 2454 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 41,089 psi | 63% | 2671 fps | 99.4% |
| Winchester 760 | <<locked>> | 98% | 49,429 psi | 76% | 2861 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,536 psi | 58% | 2585 fps | 97.5% |
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 106 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 160gr | MRR Green Long Range. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,064 fps; across all powders the maximum-charge window runs from 1,739 fps to 3,064 fps. Accurate 4350 gives the best case fill at 100 %, and 106 of the 106 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 52, ReloadSwiss RS 60 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 160gr | MRR Green Long Range 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.