Load Specifications
Bullet Manufacturer:Woodleigh
Bullet Weight:220 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 | 220gr | Woodleigh RN SN bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Hodgdon Superformance.
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 2700 | <<locked>> | 88% | 56,492 psi | 87% | 2464 fps | 99.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 2495 fps | 99.8% |
| Accurate 4064 | <<locked>> | 86% | 57,914 psi | 90% | 2477 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,766 psi | 85% | 2539 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 56,782 psi | 89% | 2503 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,740 psi | 90% | 2506 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,477 psi | 87% | 2578 fps | 99% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,201 psi | 85% | 2576 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,377 psi | 90% | 2627 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,419 psi | 85% | 2575 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,332 psi | 86% | 2487 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,448 psi | 86% | 2505 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,390 psi | 86% | 2584 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,695 psi | 88% | 2607 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,621 psi | 85% | 2567 fps | 98.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,692 psi | 82% | 2574 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,994 psi | 76% | 2510 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,888 psi | 67% | 2453 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 2687 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,594 psi | 88% | 2524 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,587 psi | 74% | 2507 fps | 97.9% |
| Bofors RP3 | <<locked>> | 86% | 55,796 psi | 87% | 2499 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,866 psi | 81% | 2575 fps | 98.7% |
| Bofors RP7 | <<locked>> | 90% | 55,376 psi | 86% | 2494 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 86% | 56,362 psi | 88% | 2519 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,534 psi | 85% | 2554 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 92% | 55,172 psi | 86% | 2526 fps | 99.1% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 50,183 psi | 78% | 2464 fps | 96.2% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,377 psi | 90% | 2561 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 57,406 psi | 90% | 2509 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,724 psi | 87% | 2514 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,914 psi | 90% | 2549 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 41,916 psi | 65% | 2480 fps | 97.3% |
| Hodgdon Superformance | <<locked>> | 92% | 56,971 psi | 89% | 2624 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,173 psi | 58% | 1512 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,435 psi | 90% | 2497 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,855 psi | 89% | 2465 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,855 psi | 89% | 2484 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,767 psi | 87% | 2472 fps | 99.7% |
| IMR 4350 | <<locked>> | 94% | 56,246 psi | 88% | 2526 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,913 psi | 88% | 2513 fps | 99.8% |
| IMR 4831 | <<locked>> | 98% | 56,840 psi | 89% | 2540 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,884 psi | 89% | 2529 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 58,566 psi | 90% | 2562 fps | 98% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,666 psi | 87% | 2611 fps | 98% |
| Lovex D073.6 | <<locked>> | 82% | 57,319 psi | 89% | 2478 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,680 psi | 87% | 2434 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,624 psi | 90% | 2484 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,072 psi | 89% | 2512 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 54,897 psi | 86% | 2507 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,947 psi | 69% | 2368 fps | 99% |
| Norma 201 | <<locked>> | 82% | 55,463 psi | 87% | 2449 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,188 psi | 88% | 2444 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,737 psi | 85% | 2494 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,913 psi | 89% | 2574 fps | 99% |
| Norma MRPᴾ | <<locked>> | 100% | 56,449 psi | 88% | 2646 fps | 99.8% |
| Norma URP | <<locked>> | 94% | 57,087 psi | 89% | 2571 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,463 psi | 87% | 2520 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,158 psi | 86% | 2617 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 94% | 55,666 psi | 87% | 2576 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,401 psi | 80% | 2543 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,218 psi | 60% | 1549 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,420 psi | 88% | 2508 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,478 psi | 88% | 2567 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,115 psi | 88% | 2595 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,360 psi | 85% | 2560 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,623 psi | 88% | 2635 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,539 psi | 65% | 2475 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 84% | 56,217 psi | 88% | 2451 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,970 psi | 87% | 2497 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,305 psi | 89% | 2551 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 98% | 53,983 psi | 84% | 2556 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 90% | 55,376 psi | 86% | 2494 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,072 psi | 89% | 2512 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,319 psi | 89% | 2478 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,624 psi | 90% | 2484 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 58,421 psi | 90% | 2552 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,580 psi | 90% | 2552 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,172 psi | 86% | 2480 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,275 psi | 88% | 2381 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,101 psi | 89% | 2386 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,811 psi | 89% | 2472 fps | 99.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,174 psi | 88% | 2602 fps | 99.3% |
| Somchem S335 | <<locked>> | 82% | 55,941 psi | 87% | 2382 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,566 psi | 90% | 2496 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,854 psi | 87% | 2491 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,492 psi | 87% | 2501 fps | 97.3% |
| Somchem S365 | <<locked>> | 96% | 55,956 psi | 87% | 2567 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,217 psi | 88% | 2535 fps | 99.4% |
| Unknown powder | <<locked>> | 92% | 57,769 psi | 90% | 2574 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 56,362 psi | 88% | 2361 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,623 psi | 87% | 2408 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,956 psi | 87% | 2419 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,508 psi | 90% | 2474 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,549 psi | 85% | 2500 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,617 psi | 77% | 2440 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 84% | 55,492 psi | 87% | 2445 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,795 psi | 85% | 2542 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,811 psi | 87% | 2579 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 52,185 psi | 81% | 2593 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,897 psi | 86% | 2488 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,534 psi | 85% | 2554 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,063 psi | 70% | 2569 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,594 psi | 88% | 2554 fps | 99% |
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 2700 | <<locked>> | 80% | 43,584 psi | 67% | 2274 fps | 97.6% |
| Accurate 3100 | <<locked>> | 84% | 30,530 psi | 48% | 2118 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 48,109 psi | 75% | 2352 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,434 psi | 57% | 2251 fps | 98.9% |
| ADI AR 2206H | <<locked>> | 80% | 53,359 psi | 83% | 2458 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,382 psi | 71% | 2335 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 37,811 psi | 59% | 2280 fps | 95% |
| ADI AR 2213 | <<locked>> | 94% | 43,714 psi | 68% | 2419 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,748 psi | 78% | 2524 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 37,942 psi | 58% | 2283 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,730 psi | 71% | 2354 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,878 psi | 76% | 2415 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,752 psi | 56% | 2260 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,089 psi | 63% | 2364 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 37,550 psi | 59% | 2279 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 90% | 37,478 psi | 58% | 2323 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,165 psi | 41% | 2054 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 88% | 29,486 psi | 46% | 2154 fps | 95.4% |
| Alliant Reloder-26 | 51.3 gr | 80% | 27,615 psi | 43% | 2145 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,939 psi | 83% | 2476 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 39,465 psi | 62% | 2362 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 45,948 psi | 72% | 2365 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 37,478 psi | 58% | 2323 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 40,611 psi | 63% | 2259 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 80% | 46,282 psi | 72% | 2376 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 41,742 psi | 65% | 2354 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 38,159 psi | 60% | 2244 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 98% | 46,224 psi | 72% | 2415 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 45,861 psi | 72% | 2411 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 53,925 psi | 84% | 2465 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,315 psi | 52% | 2167 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,558 psi | 74% | 2411 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 36,941 psi | 58% | 2372 fps | 95.3% |
| Hodgdon Superformance | 52.9 gr | 80% | 37,231 psi | 58% | 2300 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,282 psi | 43% | 1350 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,008 psi | 75% | 2372 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,328 psi | 79% | 2385 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,744 psi | 70% | 2313 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,903 psi | 68% | 2292 fps | 98.3% |
| IMR 4350 | <<locked>> | 80% | 36,448 psi | 57% | 2201 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,945 psi | 65% | 2283 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 31,937 psi | 50% | 2141 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 50,125 psi | 78% | 2438 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 45,876 psi | 71% | 2375 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 94% | 44,614 psi | 70% | 2449 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 80% | 53,722 psi | 84% | 2434 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,359 psi | 82% | 2390 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,935 psi | 75% | 2357 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,668 psi | 62% | 2245 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 37,840 psi | 59% | 2229 fps | 97.2% |
| Lovex S071 | <<locked>> | 88% | 29,675 psi | 46% | 2098 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 52,315 psi | 82% | 2408 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,765 psi | 82% | 2402 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,254 psi | 75% | 2403 fps | 100% |
| Norma 204 | <<locked>> | 82% | 38,087 psi | 59% | 2270 fps | 95% |
| Norma MRP | <<locked>> | 86% | 34,200 psi | 53% | 2280 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 36,361 psi | 57% | 2245 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 48,341 psi | 75% | 2425 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 43,497 psi | 68% | 2441 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 35,201 psi | 55% | 2236 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 92% | 37,768 psi | 59% | 2319 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,760 psi | 43% | 1383 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,369 psi | 72% | 2363 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,852 psi | 82% | 2519 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,612 psi | 66% | 2407 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,100 psi | 56% | 2267 fps | 98.7% |
| ReloadSwiss RS 70 | 50.8 gr | 80% | 35,114 psi | 55% | 2272 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 33,794 psi | 53% | 2296 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 49,806 psi | 78% | 2367 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,395 psi | 68% | 2321 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 41,785 psi | 65% | 2312 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 86% | 36,448 psi | 57% | 2261 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 40,611 psi | 63% | 2259 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,668 psi | 62% | 2245 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,722 psi | 84% | 2434 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,935 psi | 75% | 2357 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,840 psi | 58% | 2231 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,483 psi | 69% | 2371 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,880 psi | 81% | 2437 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,040 psi | 83% | 2342 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,802 psi | 70% | 2232 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,682 psi | 60% | 2195 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 38,580 psi | 59% | 2306 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 52,866 psi | 82% | 2345 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,882 psi | 84% | 2451 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,816 psi | 68% | 2320 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 45,600 psi | 71% | 2354 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 32,880 psi | 51% | 2211 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 34,708 psi | 54% | 2201 fps | 95.3% |
| Unknown powder | <<locked>> | 80% | 39,146 psi | 61% | 2291 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 80% | 50,401 psi | 79% | 2290 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,966 psi | 77% | 2329 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,574 psi | 77% | 2340 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,536 psi | 59% | 2189 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,218 psi | 61% | 2267 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 90% | 35,317 psi | 55% | 2207 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 49,008 psi | 76% | 2361 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,653 psi | 62% | 2306 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 28,674 psi | 45% | 2118 fps | 97.3% |
| Vihtavuori N560 | <<locked>> | 96% | 45,730 psi | 71% | 2490 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,695 psi | 57% | 2216 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,742 psi | 65% | 2354 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,076 psi | 36% | 2031 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,769 psi | 62% | 2297 fps | 95.8% |
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 104 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 220gr | Woodleigh RN SN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,687 fps; across all powders the maximum-charge window runs from 1,512 fps to 2,687 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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 Reloder-26, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 220gr | Woodleigh RN SN 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.