Load Specifications
Bullet Manufacturer:Speer
Bullet Weight:180 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:1:14.5
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 180gr | Speer Deep Curl Soft Point bullet and 102 powders. The key underlying parameters are shown in the table above.
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>> | 84% | 57,928 psi | 89% | 2671 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,029 psi | 88% | 2700 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 58,668 psi | 90% | 2766 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,622 psi | 86% | 2710 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,092 psi | 68% | 2621 fps | 97.4% |
| Accurate 4064 | <<locked>> | 90% | 57,058 psi | 88% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 57,130 psi | 88% | 2841 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 57,159 psi | 88% | 2782 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 58,088 psi | 89% | 2782 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,547 psi | 79% | 2766 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,854 psi | 86% | 2730 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,377 psi | 88% | 2700 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,971 psi | 88% | 2904 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 58,247 psi | 90% | 2802 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,376 psi | 85% | 2776 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 58,146 psi | 89% | 2897 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,796 psi | 86% | 2877 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 50,720 psi | 78% | 2756 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,727 psi | 64% | 2648 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,007 psi | 72% | 2815 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,029 psi | 88% | 2802 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 55,477 psi | 85% | 2769 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,361 psi | 85% | 2746 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,653 psi | 89% | 2710 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,506 psi | 85% | 2759 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,856 psi | 89% | 2864 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,318 psi | 87% | 2785 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 96% | 56,014 psi | 86% | 2838 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 94% | 56,565 psi | 87% | 2802 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 86% | 57,812 psi | 89% | 2792 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,534 psi | 84% | 2772 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 57,421 psi | 88% | 2825 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,681 psi | 87% | 2881 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,853 psi | 55% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,317 psi | 85% | 2743 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 58,015 psi | 89% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,609 psi | 89% | 2766 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 57,305 psi | 88% | 2749 fps | 98.7% |
| IMR 4350 | <<locked>> | 98% | 55,767 psi | 86% | 2772 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,276 psi | 88% | 2776 fps | 98.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 57,653 psi | 89% | 2835 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 56,811 psi | 87% | 2805 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,854 psi | 86% | 2730 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,232 psi | 88% | 2756 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,246 psi | 87% | 2707 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,435 psi | 88% | 2756 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,666 psi | 87% | 2769 fps | 99.5% |
| Lovex S070 | <<locked>> | 98% | 57,899 psi | 89% | 2808 fps | 99% |
| Norma 201 | <<locked>> | 86% | 55,738 psi | 86% | 2723 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,391 psi | 87% | 2723 fps | 100% |
| Norma 203B | <<locked>> | 90% | 58,059 psi | 89% | 2812 fps | 100% |
| Norma 204 | <<locked>> | 98% | 56,550 psi | 87% | 2825 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 46,630 psi | 72% | 2769 fps | 97% |
| Norma URP | <<locked>> | 98% | 56,028 psi | 86% | 2828 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 55,114 psi | 85% | 2789 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 58,566 psi | 90% | 2884 fps | 99.5% |
| Ramshot TAC | <<locked>> | 84% | 56,246 psi | 87% | 2756 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,028 psi | 86% | 2769 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,681 psi | 87% | 2733 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,376 psi | 56% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,405 psi | 87% | 2766 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,028 psi | 86% | 2841 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,419 psi | 85% | 2874 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,811 psi | 87% | 2864 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,217 psi | 86% | 2897 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 84% | 56,869 psi | 87% | 2703 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,463 psi | 87% | 2726 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,361 psi | 85% | 2762 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,400 psi | 76% | 2740 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 94% | 55,361 psi | 85% | 2746 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,666 psi | 87% | 2769 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,232 psi | 88% | 2756 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,435 psi | 88% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 57,899 psi | 89% | 2808 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,174 psi | 88% | 2822 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 58,566 psi | 90% | 2785 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,521 psi | 85% | 2753 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,159 psi | 88% | 2661 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,566 psi | 89% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,942 psi | 88% | 2723 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 48,921 psi | 75% | 2733 fps | 96% |
| Somchem S321 | <<locked>> | 82% | 57,159 psi | 88% | 2759 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,521 psi | 87% | 2657 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 58,175 psi | 89% | 2776 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,608 psi | 86% | 2759 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,085 psi | 83% | 2828 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,067 psi | 77% | 2720 fps | 97.1% |
| Vihtavuori N130 | <<locked>> | 82% | 56,855 psi | 87% | 2621 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,450 psi | 88% | 2644 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,376 psi | 87% | 2687 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,927 psi | 88% | 2703 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,261 psi | 88% | 2740 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 58,436 psi | 90% | 2822 fps | 100% |
| Vihtavuori N530 | <<locked>> | 84% | 56,492 psi | 87% | 2730 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 58,566 psi | 90% | 2746 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 57,348 psi | 88% | 2828 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,340 psi | 71% | 2723 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 58,755 psi | 90% | 2802 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,811 psi | 87% | 2779 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,318 psi | 87% | 2844 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,507 psi | 58% | 2667 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,361 psi | 85% | 2759 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 51,416 psi | 79% | 2585 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,077 psi | 68% | 2520 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,503 psi | 79% | 2671 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,931 psi | 66% | 2497 fps | 95.1% |
| Accurate 3100 | <<locked>> | 94% | 35,853 psi | 55% | 2461 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 41,684 psi | 64% | 2520 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,835 psi | 47% | 2356 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 47,355 psi | 73% | 2631 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 40,350 psi | 62% | 2487 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 98% | 48,443 psi | 75% | 2710 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,458 psi | 76% | 2635 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,299 psi | 77% | 2612 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,308 psi | 67% | 2674 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,132 psi | 62% | 2510 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,033 psi | 66% | 2572 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,154 psi | 48% | 2369 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,737 psi | 53% | 2490 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,427 psi | 73% | 2700 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,790 psi | 44% | 2333 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,098 psi | 51% | 2507 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,615 psi | 72% | 2638 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 39,885 psi | 61% | 2516 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 43,279 psi | 67% | 2543 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,894 psi | 78% | 2615 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,588 psi | 75% | 2661 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,795 psi | 83% | 2805 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,712 psi | 63% | 2523 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 86% | 40,437 psi | 62% | 2569 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 88% | 46,847 psi | 72% | 2644 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 47,834 psi | 74% | 2641 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,645 psi | 44% | 2277 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,019 psi | 68% | 2618 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 42,714 psi | 66% | 2638 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,600 psi | 41% | 1493 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,730 psi | 70% | 2592 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 47,747 psi | 73% | 2628 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,395 psi | 65% | 2520 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,759 psi | 69% | 2543 fps | 96.5% |
| IMR 4350 | <<locked>> | 90% | 43,453 psi | 67% | 2569 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,134 psi | 65% | 2520 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 32,068 psi | 49% | 2372 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 44,092 psi | 68% | 2602 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 49,458 psi | 76% | 2635 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,862 psi | 72% | 2612 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,137 psi | 73% | 2566 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 42,409 psi | 65% | 2523 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 36,985 psi | 57% | 2421 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 39,856 psi | 61% | 2500 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 46,325 psi | 71% | 2582 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,818 psi | 72% | 2585 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,380 psi | 65% | 2562 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 49,516 psi | 76% | 2713 fps | 95.7% |
| Norma MRP | <<locked>> | 96% | 40,915 psi | 63% | 2651 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 31,256 psi | 48% | 2359 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 42,061 psi | 65% | 2575 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 36,999 psi | 57% | 2503 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 49,226 psi | 76% | 2644 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,153 psi | 76% | 2667 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,171 psi | 82% | 2680 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,151 psi | 42% | 1532 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,988 psi | 63% | 2507 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,658 psi | 70% | 2677 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,941 psi | 57% | 2552 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,706 psi | 50% | 2425 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 34,911 psi | 54% | 2484 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 50,314 psi | 77% | 2612 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,077 psi | 68% | 2536 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,666 psi | 58% | 2464 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 46,311 psi | 71% | 2684 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 86% | 43,279 psi | 67% | 2543 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,985 psi | 57% | 2421 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,862 psi | 72% | 2612 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,409 psi | 65% | 2523 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 39,856 psi | 61% | 2500 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,537 psi | 59% | 2513 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,906 psi | 74% | 2628 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,788 psi | 70% | 2602 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,514 psi | 73% | 2526 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,726 psi | 61% | 2402 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,350 psi | 64% | 2470 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 45,876 psi | 71% | 2677 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 53,548 psi | 82% | 2710 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,166 psi | 73% | 2526 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,427 psi | 73% | 2618 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 38,261 psi | 59% | 2467 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 27,920 psi | 43% | 2313 fps | 97.3% |
| Somchem S385 | <<locked>> | 96% | 44,121 psi | 68% | 2615 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 53,461 psi | 82% | 2575 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,921 psi | 74% | 2516 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,801 psi | 67% | 2510 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,425 psi | 68% | 2526 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,535 psi | 56% | 2408 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 32,518 psi | 50% | 2362 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 49,559 psi | 76% | 2631 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,801 psi | 66% | 2516 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,097 psi | 49% | 2362 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 86% | 29,109 psi | 45% | 2356 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,155 psi | 49% | 2336 fps | 97.6% |
| Winchester 748 | <<locked>> | 80% | 49,632 psi | 76% | 2677 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,437 psi | 62% | 2569 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,108 psi | 42% | 2352 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,527 psi | 70% | 2608 fps | 99.8% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 102 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 180gr | Speer Deep Curl Soft Point. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,904 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,904 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-16 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.