Load Specifications
Bullet:.308 | 200gr | Swift A-Frame
Bullet Manufacturer:Swift
Bullet Weight:200 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 RCM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:75 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:13.0
Load data in caliber .300 RCM with .308 | 200gr | Swift A-Frame bullet and 108 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% | 56,202 psi | 88% | 2490 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,434 psi | 87% | 2520 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,623 psi | 89% | 2579 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,450 psi | 90% | 2585 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,716 psi | 72% | 2507 fps | 98.5% |
| Accurate 4064 | <<locked>> | 88% | 55,405 psi | 87% | 2566 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,448 psi | 87% | 2661 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 49,980 psi | 78% | 2684 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 84% | 55,216 psi | 87% | 2595 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,333 psi | 88% | 2602 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,272 psi | 83% | 2648 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,508 psi | 90% | 2592 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,506 psi | 87% | 2516 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,911 psi | 86% | 2713 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,953 psi | 83% | 2644 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,434 psi | 88% | 2618 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,985 psi | 89% | 2641 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,405 psi | 88% | 2713 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,983 psi | 85% | 2694 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,170 psi | 82% | 2635 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,035 psi | 72% | 2582 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,352 psi | 68% | 2536 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,058 psi | 60% | 2448 fps | 97.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,776 psi | 76% | 2700 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,911 psi | 86% | 2615 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 57,479 psi | 90% | 2638 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,035 psi | 72% | 2582 fps | 96.3% |
| Bofors RP7 | <<locked>> | 94% | 56,956 psi | 89% | 2618 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,521 psi | 87% | 2526 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,276 psi | 90% | 2625 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,302 psi | 85% | 2602 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 54,534 psi | 85% | 2664 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 92% | 54,679 psi | 86% | 2621 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 84% | 55,782 psi | 87% | 2605 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,260 psi | 88% | 2638 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,535 psi | 87% | 2638 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,607 psi | 86% | 2697 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,926 psi | 56% | 1568 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,869 psi | 89% | 2605 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,347 psi | 88% | 2582 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,651 psi | 87% | 2582 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,492 psi | 87% | 2572 fps | 99% |
| IMR 4350 | <<locked>> | 98% | 57,334 psi | 90% | 2644 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,303 psi | 87% | 2595 fps | 99% |
| IMR 4831 | <<locked>> | 98% | 55,927 psi | 88% | 2654 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,071 psi | 86% | 2621 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,508 psi | 90% | 2592 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,317 psi | 87% | 2572 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,534 psi | 85% | 2526 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,666 psi | 87% | 2575 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,882 psi | 86% | 2589 fps | 99.7% |
| Lovex S070 | <<locked>> | 96% | 56,101 psi | 88% | 2631 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,189 psi | 60% | 2375 fps | 96.8% |
| Norma 201 | <<locked>> | 86% | 57,464 psi | 90% | 2589 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,578 psi | 86% | 2539 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,188 psi | 88% | 2628 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,505 psi | 85% | 2644 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 48,530 psi | 76% | 2657 fps | 98.2% |
| Norma URP | <<locked>> | 96% | 54,346 psi | 85% | 2651 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 57,029 psi | 89% | 2654 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,492 psi | 89% | 2700 fps | 99.7% |
| Ramshot TAC | <<locked>> | 84% | 57,638 psi | 90% | 2621 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,940 psi | 85% | 2585 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,564 psi | 57% | 1608 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,607 psi | 86% | 2589 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,172 psi | 85% | 2654 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 57,493 psi | 90% | 2736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,187 psi | 86% | 2687 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,998 psi | 85% | 2710 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 55,158 psi | 86% | 2523 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,694 psi | 86% | 2543 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,363 psi | 90% | 2628 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,114 psi | 86% | 2621 fps | 96.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,242 psi | 80% | 2621 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 94% | 56,956 psi | 89% | 2618 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,882 psi | 86% | 2589 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,317 psi | 87% | 2572 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,666 psi | 87% | 2575 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,101 psi | 88% | 2631 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,274 psi | 87% | 2641 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,521 psi | 89% | 2605 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,101 psi | 89% | 2618 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,100 psi | 86% | 2477 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,796 psi | 87% | 2484 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,926 psi | 86% | 2546 fps | 99% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,763 psi | 80% | 2615 fps | 97.3% |
| Somchem S335 | <<locked>> | 84% | 54,607 psi | 86% | 2480 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,912 psi | 88% | 2589 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,363 psi | 90% | 2625 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 56,985 psi | 89% | 2615 fps | 96.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 2694 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 2602 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 84% | 55,463 psi | 87% | 2461 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,491 psi | 85% | 2503 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,027 psi | 86% | 2520 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,288 psi | 87% | 2559 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,753 psi | 89% | 2644 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,672 psi | 70% | 2474 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 82% | 54,621 psi | 86% | 2546 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,521 psi | 89% | 2562 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,680 psi | 87% | 2651 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,167 psi | 75% | 2602 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,463 psi | 88% | 2618 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,824 psi | 86% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,534 psi | 85% | 2664 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,783 psi | 61% | 2566 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,159 psi | 90% | 2625 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 48,486 psi | 76% | 2539 fps | 96.5% |
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% | 52,939 psi | 83% | 2451 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,745 psi | 72% | 2395 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,997 psi | 83% | 2533 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,222 psi | 69% | 2382 fps | 96.4% |
| Accurate 3100 | <<locked>> | 92% | 34,969 psi | 55% | 2313 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,308 psi | 68% | 2398 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,169 psi | 50% | 2260 fps | 96.7% |
| Accurate High Country | <<locked>> | 98% | 46,470 psi | 73% | 2625 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 48,834 psi | 77% | 2503 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,452 psi | 65% | 2369 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 43,932 psi | 69% | 2490 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,879 psi | 80% | 2503 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,127 psi | 82% | 2474 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,701 psi | 70% | 2552 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 43,801 psi | 69% | 2490 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,437 psi | 65% | 2392 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,425 psi | 70% | 2451 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,256 psi | 51% | 2270 fps | 96.8% |
| Alliant Reloder-17 | 48.9 gr | 80% | 35,998 psi | 56% | 2385 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 43,236 psi | 68% | 2484 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,105 psi | 68% | 2530 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,382 psi | 41% | 2142 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,707 psi | 53% | 2346 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,082 psi | 50% | 2352 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,095 psi | 75% | 2513 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 41,379 psi | 65% | 2402 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 43,105 psi | 68% | 2530 fps | 95.4% |
| Bofors RP7 | <<locked>> | 82% | 39,465 psi | 62% | 2329 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,431 psi | 82% | 2484 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,111 psi | 79% | 2530 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,974 psi | 66% | 2405 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 36,666 psi | 57% | 2352 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 84% | 42,453 psi | 67% | 2421 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 49,313 psi | 77% | 2513 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,747 psi | 47% | 2178 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,614 psi | 71% | 2497 fps | 100% |
| Hodgdon Superformance | 54.2 gr | 84% | 38,305 psi | 60% | 2411 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 42% | 1401 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,108 psi | 74% | 2467 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,429 psi | 77% | 2493 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,569 psi | 68% | 2398 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,832 psi | 72% | 2421 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 39,639 psi | 62% | 2359 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,363 psi | 60% | 2306 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 31,241 psi | 49% | 2221 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 45,542 psi | 71% | 2477 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 50,879 psi | 80% | 2503 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,414 psi | 76% | 2480 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,298 psi | 76% | 2438 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,642 psi | 68% | 2398 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,998 psi | 56% | 2267 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 36,303 psi | 57% | 2290 fps | 95.2% |
| Lovex S071 | <<locked>> | 96% | 33,605 psi | 53% | 2283 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 47,863 psi | 75% | 2457 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,153 psi | 75% | 2454 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,801 psi | 69% | 2441 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 44,628 psi | 70% | 2487 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 37,072 psi | 58% | 2434 fps | 95% |
| Norma URP | <<locked>> | 80% | 32,416 psi | 51% | 2260 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 43,482 psi | 68% | 2457 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 82% | 33,605 psi | 53% | 2293 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 50,633 psi | 79% | 2520 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,604 psi | 79% | 2536 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,267 psi | 43% | 1434 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,105 psi | 66% | 2388 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,311 psi | 74% | 2552 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,334 psi | 60% | 2441 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,763 psi | 50% | 2270 fps | 96.1% |
| ReloadSwiss RS 70 | 49.6 gr | 80% | 31,560 psi | 49% | 2270 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 51,750 psi | 81% | 2477 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,469 psi | 71% | 2411 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,030 psi | 61% | 2352 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 48,530 psi | 76% | 2520 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 94% | 42,032 psi | 66% | 2467 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 82% | 39,465 psi | 62% | 2329 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,998 psi | 56% | 2267 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,414 psi | 76% | 2480 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,642 psi | 68% | 2398 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,303 psi | 57% | 2290 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,885 psi | 63% | 2398 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,385 psi | 77% | 2503 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,210 psi | 74% | 2477 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,762 psi | 76% | 2395 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,886 psi | 64% | 2277 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,362 psi | 59% | 2260 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 41,640 psi | 65% | 2461 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 48,646 psi | 76% | 2398 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,936 psi | 77% | 2490 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,682 psi | 62% | 2352 fps | 99.6% |
| Somchem S361 | <<locked>> | 98% | 53,432 psi | 84% | 2566 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 28,993 psi | 45% | 2218 fps | 98.6% |
| Somchem S385 | <<locked>> | 92% | 39,943 psi | 63% | 2402 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 49,197 psi | 77% | 2382 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,237 psi | 71% | 2382 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,759 psi | 72% | 2398 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,739 psi | 59% | 2293 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 33,765 psi | 53% | 2260 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 98% | 42,032 psi | 66% | 2428 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 51,097 psi | 80% | 2500 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,063 psi | 69% | 2392 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,243 psi | 52% | 2260 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 84% | 28,442 psi | 45% | 2211 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,156 psi | 52% | 2234 fps | 98.7% |
| Winchester 748 | <<locked>> | 80% | 51,329 psi | 80% | 2546 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 36,666 psi | 57% | 2352 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 86% | 24,787 psi | 39% | 2159 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,833 psi | 73% | 2484 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 45,513 psi | 71% | 2490 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 108 powders for .300 RCM loaded with the .308 | 200gr | Swift A-Frame. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,736 fps; across all powders the maximum-charge window runs from 1,568 fps to 2,736 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 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 High Country, 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 RCM with the .308 | 200gr | Swift A-Frame 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.