Load Specifications
Bullet:.308 | 200gr | Swift A-Frame
Bullet Manufacturer:Swift
Bullet Weight:200 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:1:13.0
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 200gr | Swift A-Frame 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 70, Hodgdon Superformance and Alliant Reloder-17.
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>> | 82% | 56,637 psi | 87% | 2500 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,159 psi | 86% | 2533 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,580 psi | 89% | 2595 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,986 psi | 89% | 2598 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,485 psi | 72% | 2523 fps | 98.7% |
| Accurate 4064 | <<locked>> | 88% | 56,144 psi | 86% | 2579 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,405 psi | 87% | 2680 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,854 psi | 86% | 2612 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,913 psi | 88% | 2612 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,954 psi | 83% | 2664 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 58,146 psi | 89% | 2605 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,333 psi | 87% | 2530 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,811 psi | 86% | 2730 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,406 psi | 88% | 2635 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,899 psi | 89% | 2657 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,261 psi | 88% | 2730 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 58,624 psi | 90% | 2756 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,924 psi | 81% | 2651 fps | 97.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,659 psi | 72% | 2598 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,048 psi | 68% | 2552 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,580 psi | 59% | 2467 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,748 psi | 77% | 2720 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,753 psi | 86% | 2631 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 58,131 psi | 89% | 2648 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,659 psi | 72% | 2598 fps | 96.6% |
| Bofors RP7 | <<locked>> | 94% | 57,798 psi | 89% | 2635 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,173 psi | 86% | 2539 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,914 psi | 89% | 2635 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,216 psi | 85% | 2618 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 55,042 psi | 85% | 2677 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 92% | 55,463 psi | 85% | 2641 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 84% | 56,434 psi | 87% | 2618 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,159 psi | 88% | 2651 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,144 psi | 86% | 2651 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,259 psi | 85% | 2713 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,129 psi | 56% | 1578 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,522 psi | 88% | 2618 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,797 psi | 87% | 2592 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,318 psi | 87% | 2595 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,014 psi | 86% | 2585 fps | 99.2% |
| IMR 4350 | <<locked>> | 98% | 58,088 psi | 89% | 2657 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,115 psi | 86% | 2612 fps | 99.1% |
| IMR 4831 | <<locked>> | 98% | 56,768 psi | 87% | 2671 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,695 psi | 86% | 2635 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 53,722 psi | 83% | 2598 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 84% | 58,146 psi | 89% | 2605 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,956 psi | 86% | 2585 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 58,421 psi | 90% | 2582 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,550 psi | 87% | 2592 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,709 psi | 86% | 2605 fps | 99.8% |
| Lovex S070 | <<locked>> | 96% | 56,884 psi | 88% | 2648 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,667 psi | 59% | 2388 fps | 97% |
| Norma 201 | <<locked>> | 86% | 58,117 psi | 89% | 2602 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,259 psi | 85% | 2556 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,101 psi | 88% | 2644 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,245 psi | 85% | 2661 fps | 97.8% |
| Norma MRPᴾ | <<locked>> | 100% | 49,168 psi | 76% | 2674 fps | 98.4% |
| Norma URP | <<locked>> | 98% | 58,653 psi | 90% | 2710 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 57,609 psi | 89% | 2667 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,319 psi | 88% | 2713 fps | 99.8% |
| Ramshot TAC | <<locked>> | 84% | 58,450 psi | 90% | 2635 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 58,305 psi | 90% | 2648 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,521 psi | 56% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,405 psi | 85% | 2605 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 58,668 psi | 90% | 2720 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 58,378 psi | 90% | 2749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,028 psi | 86% | 2700 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 58,769 psi | 90% | 2779 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 55,579 psi | 86% | 2533 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 58,639 psi | 90% | 2598 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 58,015 psi | 89% | 2641 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,840 psi | 86% | 2638 fps | 97% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,011 psi | 80% | 2638 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 94% | 57,798 psi | 89% | 2635 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,709 psi | 86% | 2605 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,956 psi | 86% | 2585 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,550 psi | 87% | 2592 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,884 psi | 88% | 2648 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,188 psi | 86% | 2657 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,101 psi | 88% | 2618 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,696 psi | 89% | 2631 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,782 psi | 86% | 2493 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,405 psi | 87% | 2497 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,666 psi | 86% | 2562 fps | 99.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,517 psi | 79% | 2635 fps | 97.6% |
| Somchem S335 | <<locked>> | 86% | 58,769 psi | 90% | 2533 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,797 psi | 87% | 2605 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,972 psi | 89% | 2638 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 57,870 psi | 89% | 2635 fps | 96.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,261 psi | 88% | 2710 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,779 psi | 81% | 2618 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 84% | 56,188 psi | 86% | 2474 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 58,610 psi | 90% | 2556 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,651 psi | 86% | 2533 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,883 psi | 86% | 2569 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,624 psi | 89% | 2657 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,324 psi | 70% | 2490 fps | 96.6% |
| Vihtavuori N530 | <<locked>> | 84% | 58,639 psi | 90% | 2602 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,406 psi | 88% | 2579 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,463 psi | 87% | 2664 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,994 psi | 75% | 2618 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,421 psi | 88% | 2635 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,463 psi | 85% | 2605 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,332 psi | 85% | 2680 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,537 psi | 61% | 2589 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,783 psi | 89% | 2638 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,443 psi | 76% | 2559 fps | 96.8% |
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% | 53,403 psi | 82% | 2461 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,238 psi | 71% | 2405 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,664 psi | 83% | 2546 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,759 psi | 69% | 2398 fps | 96.6% |
| Accurate 3100 | <<locked>> | 90% | 33,127 psi | 51% | 2277 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 43,758 psi | 67% | 2408 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,750 psi | 50% | 2277 fps | 97% |
| ADI AR 2206H | <<locked>> | 80% | 49,458 psi | 76% | 2516 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,032 psi | 65% | 2385 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 94% | 44,585 psi | 69% | 2510 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,532 psi | 79% | 2516 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,663 psi | 81% | 2484 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,324 psi | 70% | 2566 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,047 psi | 65% | 2405 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,049 psi | 69% | 2467 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,576 psi | 50% | 2283 fps | 97% |
| Alliant Reloder-17 | 49.5 gr | 80% | 36,535 psi | 56% | 2402 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 94% | 43,918 psi | 68% | 2500 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,729 psi | 67% | 2546 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 82% | 25,251 psi | 39% | 2110 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,200 psi | 53% | 2365 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 86% | 30,458 psi | 47% | 2313 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,646 psi | 75% | 2526 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 42,032 psi | 65% | 2415 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 43,729 psi | 67% | 2546 fps | 95.8% |
| Bofors RP7 | <<locked>> | 82% | 39,784 psi | 61% | 2339 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,779 psi | 81% | 2493 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,720 psi | 78% | 2539 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,583 psi | 66% | 2421 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 37,188 psi | 57% | 2369 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 40,524 psi | 62% | 2388 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 50,009 psi | 77% | 2526 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,081 psi | 46% | 2192 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,253 psi | 71% | 2510 fps | 100% |
| Hodgdon Superformance | 54.9 gr | 84% | 38,899 psi | 60% | 2431 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,919 psi | 41% | 1407 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,703 psi | 73% | 2480 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,183 psi | 77% | 2507 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,193 psi | 68% | 2415 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,412 psi | 71% | 2434 fps | 97.8% |
| IMR 4350 | <<locked>> | 86% | 40,161 psi | 62% | 2372 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,870 psi | 60% | 2323 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 31,589 psi | 49% | 2234 fps | 96.6% |
| IMR 4895 | <<locked>> | 80% | 46,166 psi | 71% | 2493 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 50,415 psi | 78% | 2549 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 51,532 psi | 79% | 2516 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,095 psi | 76% | 2493 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,921 psi | 75% | 2451 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,280 psi | 68% | 2415 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,347 psi | 56% | 2277 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 36,811 psi | 57% | 2306 fps | 95.6% |
| Lovex S071 | <<locked>> | 96% | 34,084 psi | 52% | 2297 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 48,254 psi | 74% | 2467 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,820 psi | 75% | 2467 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,454 psi | 68% | 2457 fps | 99.9% |
| Norma 204 | <<locked>> | 90% | 45,353 psi | 70% | 2507 fps | 95.8% |
| Norma MRP | <<locked>> | 92% | 37,637 psi | 58% | 2454 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 32,750 psi | 50% | 2270 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 44,048 psi | 68% | 2470 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 34,084 psi | 52% | 2310 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 51,169 psi | 79% | 2533 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,213 psi | 79% | 2549 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,340 psi | 42% | 1440 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,641 psi | 66% | 2405 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,022 psi | 74% | 2569 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,870 psi | 60% | 2454 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,271 psi | 50% | 2287 fps | 96.4% |
| ReloadSwiss RS 70 | 50.2 gr | 80% | 31,981 psi | 49% | 2287 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 52,475 psi | 81% | 2490 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,137 psi | 71% | 2428 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,407 psi | 61% | 2362 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 96% | 49,269 psi | 76% | 2539 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 94% | 42,743 psi | 66% | 2484 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 82% | 39,784 psi | 61% | 2339 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,347 psi | 56% | 2277 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,095 psi | 76% | 2493 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,280 psi | 68% | 2415 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,811 psi | 57% | 2306 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,451 psi | 62% | 2411 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,951 psi | 77% | 2516 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,776 psi | 74% | 2490 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,472 psi | 76% | 2408 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,495 psi | 64% | 2293 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,869 psi | 58% | 2274 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 42,337 psi | 65% | 2480 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 49,008 psi | 75% | 2408 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,545 psi | 76% | 2507 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,045 psi | 62% | 2365 fps | 99.7% |
| Somchem S361 | <<locked>> | 98% | 54,041 psi | 83% | 2582 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 29,501 psi | 45% | 2234 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 38,043 psi | 59% | 2369 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 49,893 psi | 77% | 2395 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,963 psi | 71% | 2395 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,151 psi | 71% | 2405 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,116 psi | 59% | 2303 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 34,316 psi | 53% | 2277 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 39,987 psi | 62% | 2395 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 51,779 psi | 80% | 2513 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,614 psi | 69% | 2405 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,721 psi | 52% | 2277 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 82% | 27,195 psi | 42% | 2178 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,576 psi | 52% | 2251 fps | 98.9% |
| Winchester 748 | <<locked>> | 80% | 51,996 psi | 80% | 2559 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 37,188 psi | 57% | 2369 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 25,121 psi | 39% | 2178 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,485 psi | 73% | 2497 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 43,149 psi | 66% | 2454 fps | 95.2% |
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 120 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 200gr | Swift A-Frame. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,779 fps; across all powders the maximum-charge window runs from 1,578 fps to 2,779 fps. Accurate 3100 gives the best case fill at 100 %, and 120 of the 120 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 200gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Hodgdon H1000, Hodgdon Retumbo burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.