Load Specifications
Bullet Manufacturer:Winchester
Bullet Weight:190 gr
Bullet Diameter:0.311"
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:1:6.0
Load data in caliber .300 RCM with .311 | 190gr | Winchester Silvertip 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-16.
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 2495 | <<locked>> | 84% | 54,418 psi | 85% | 2602 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,999 psi | 88% | 2667 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,660 psi | 76% | 2644 fps | 98.9% |
| Accurate 4064 | <<locked>> | 86% | 54,563 psi | 86% | 2651 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,839 psi | 86% | 2749 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 53,113 psi | 83% | 2828 fps | 96.8% |
| ADI AR 2206H | <<locked>> | 84% | 57,624 psi | 90% | 2730 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,259 psi | 87% | 2687 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 2789 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,304 psi | 88% | 2674 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,853 psi | 84% | 2799 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,825 psi | 87% | 2785 fps | 98.1% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,825 psi | 87% | 2785 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,680 psi | 87% | 2707 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,941 psi | 88% | 2726 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,637 psi | 87% | 2805 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,985 psi | 89% | 2831 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,984 psi | 86% | 2776 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,559 psi | 76% | 2720 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,992 psi | 72% | 2667 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,219 psi | 63% | 2585 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,127 psi | 82% | 2848 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,450 psi | 90% | 2749 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 56,434 psi | 88% | 2720 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,559 psi | 76% | 2720 fps | 96.9% |
| Bofors RP7 | <<locked>> | 92% | 56,101 psi | 88% | 2707 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,638 psi | 90% | 2651 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,115 psi | 88% | 2707 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,000 psi | 89% | 2740 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 57,363 psi | 90% | 2802 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 92% | 57,421 psi | 90% | 2762 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 82% | 54,708 psi | 86% | 2690 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,738 psi | 87% | 2726 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,462 psi | 85% | 2720 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 57,638 psi | 90% | 2841 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,042 psi | 56% | 1647 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,782 psi | 87% | 2690 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,071 psi | 86% | 2664 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,607 psi | 86% | 2667 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,638 psi | 90% | 2703 fps | 99.3% |
| IMR 4350 | <<locked>> | 96% | 56,739 psi | 89% | 2736 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,375 psi | 85% | 2684 fps | 98.9% |
| IMR 4831 | <<locked>> | 96% | 55,303 psi | 87% | 2743 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,406 psi | 90% | 2753 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 55,709 psi | 87% | 2720 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 82% | 56,304 psi | 88% | 2674 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,273 psi | 85% | 2654 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,478 psi | 89% | 2654 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,636 psi | 86% | 2661 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,464 psi | 90% | 2726 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 55,303 psi | 87% | 2717 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,582 psi | 64% | 2503 fps | 97.4% |
| Norma 201 | <<locked>> | 84% | 56,260 psi | 88% | 2671 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,985 psi | 89% | 2671 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,216 psi | 87% | 2713 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,508 psi | 90% | 2785 fps | 98.1% |
| Norma MRPᴾ | <<locked>> | 100% | 51,445 psi | 81% | 2802 fps | 98.8% |
| Norma URP | <<locked>> | 96% | 57,188 psi | 90% | 2785 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,970 psi | 88% | 2740 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,014 psi | 88% | 2789 fps | 99.7% |
| Ramshot TAC | <<locked>> | 82% | 56,420 psi | 88% | 2703 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,507 psi | 89% | 2717 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,854 psi | 58% | 1693 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,159 psi | 90% | 2723 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,942 psi | 89% | 2792 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,710 psi | 89% | 2825 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,621 psi | 86% | 2776 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,261 psi | 90% | 2854 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 57,188 psi | 90% | 2648 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,985 psi | 89% | 2674 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,594 psi | 89% | 2717 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,389 psi | 85% | 2710 fps | 96.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,346 psi | 85% | 2762 fps | 98% |
| Rottweil R 907 | <<locked>> | 92% | 56,101 psi | 88% | 2707 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,464 psi | 90% | 2726 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,273 psi | 85% | 2654 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,636 psi | 86% | 2661 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,303 psi | 87% | 2717 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,389 psi | 85% | 2723 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,172 psi | 86% | 2684 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,927 psi | 88% | 2703 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,435 psi | 90% | 2605 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,636 psi | 86% | 2566 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,725 psi | 90% | 2684 fps | 99.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,853 psi | 84% | 2759 fps | 97.9% |
| Somchem S335 | <<locked>> | 84% | 56,855 psi | 89% | 2605 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,926 psi | 86% | 2674 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,391 psi | 88% | 2710 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 56,057 psi | 88% | 2700 fps | 96.1% |
| Somchem S365 | <<locked>> | 98% | 55,927 psi | 88% | 2785 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,810 psi | 86% | 2740 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 82% | 54,505 psi | 85% | 2546 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,159 psi | 90% | 2631 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,363 psi | 90% | 2648 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,462 psi | 85% | 2644 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,912 psi | 88% | 2730 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,224 psi | 74% | 2608 fps | 97% |
| Vihtavuori N530 | <<locked>> | 82% | 56,898 psi | 89% | 2677 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,521 psi | 87% | 2648 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,955 psi | 86% | 2736 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,271 psi | 80% | 2740 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,782 psi | 87% | 2707 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,217 psi | 90% | 2720 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,638 psi | 90% | 2805 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,234 psi | 65% | 2710 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,115 psi | 88% | 2710 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,474 psi | 81% | 2680 fps | 97.2% |
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 2495 | <<locked>> | 80% | 47,848 psi | 75% | 2513 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,064 psi | 72% | 2510 fps | 96.9% |
| Accurate 3100 | <<locked>> | 90% | 34,766 psi | 54% | 2385 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 45,324 psi | 71% | 2520 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,997 psi | 53% | 2379 fps | 97.2% |
| Accurate High Country | <<locked>> | 96% | 46,325 psi | 73% | 2713 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 50,763 psi | 80% | 2631 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,134 psi | 68% | 2490 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 43,250 psi | 68% | 2569 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,837 psi | 83% | 2628 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,920 psi | 74% | 2684 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 43,395 psi | 68% | 2575 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 43,395 psi | 68% | 2575 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,410 psi | 68% | 2516 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,340 psi | 73% | 2575 fps | 99.8% |
| Alliant Reloder-16 | 49.6 gr | 80% | 33,721 psi | 53% | 2392 fps | 97.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,782 psi | 59% | 2510 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 42,888 psi | 67% | 2566 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 42,757 psi | 67% | 2612 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,179 psi | 41% | 2211 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,373 psi | 52% | 2421 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 86% | 31,676 psi | 50% | 2421 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,372 psi | 79% | 2644 fps | 99.9% |
| Bofors RP3 | <<locked>> | 80% | 43,497 psi | 68% | 2526 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 42,757 psi | 67% | 2612 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 38,653 psi | 61% | 2402 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,157 psi | 85% | 2605 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,388 psi | 82% | 2654 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,888 psi | 69% | 2530 fps | 99% |
| Hodgdon H414 | <<locked>> | 82% | 38,479 psi | 60% | 2477 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 82% | 41,872 psi | 66% | 2500 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 51,285 psi | 80% | 2638 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,256 psi | 49% | 2297 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,790 psi | 75% | 2625 fps | 100% |
| Hodgdon Superformance | 59.3 gr | 84% | 40,437 psi | 63% | 2546 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 42% | 1473 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,008 psi | 77% | 2589 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,764 psi | 81% | 2621 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,368 psi | 71% | 2523 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,688 psi | 75% | 2546 fps | 98% |
| IMR 4350 | <<locked>> | 84% | 39,073 psi | 61% | 2434 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,001 psi | 63% | 2431 fps | 96% |
| IMR 4831 | <<locked>> | 80% | 32,938 psi | 52% | 2339 fps | 96.9% |
| IMR 4895 | <<locked>> | 80% | 47,500 psi | 74% | 2605 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,228 psi | 82% | 2667 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 52,837 psi | 83% | 2628 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,850 psi | 80% | 2608 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,009 psi | 78% | 2559 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,484 psi | 71% | 2523 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,536 psi | 59% | 2385 fps | 96.8% |
| Lovex S070 | <<locked>> | 80% | 35,824 psi | 56% | 2365 fps | 95% |
| Lovex S071 | <<locked>> | 94% | 33,518 psi | 53% | 2359 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 49,690 psi | 78% | 2579 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,270 psi | 79% | 2579 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,730 psi | 72% | 2566 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 43,874 psi | 69% | 2566 fps | 95.2% |
| Norma MRP | <<locked>> | 92% | 39,218 psi | 61% | 2569 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 34,171 psi | 54% | 2379 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 80% | 45,600 psi | 71% | 2582 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 35,360 psi | 55% | 2415 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 52,823 psi | 83% | 2651 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,750 psi | 83% | 2664 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,470 psi | 43% | 1509 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,164 psi | 69% | 2516 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,821 psi | 78% | 2687 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,161 psi | 63% | 2562 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,736 psi | 53% | 2395 fps | 96.7% |
| ReloadSwiss RS 70 | 54.2 gr | 80% | 33,083 psi | 52% | 2395 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 53,940 psi | 85% | 2605 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,427 psi | 74% | 2536 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,959 psi | 64% | 2474 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 47,906 psi | 75% | 2605 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 92% | 41,582 psi | 65% | 2546 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 38,653 psi | 61% | 2402 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,536 psi | 59% | 2385 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,850 psi | 80% | 2608 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,484 psi | 71% | 2523 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 35,824 psi | 56% | 2365 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,930 psi | 66% | 2523 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,445 psi | 81% | 2631 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,298 psi | 77% | 2605 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,575 psi | 79% | 2516 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,569 psi | 67% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 36,666 psi | 57% | 2329 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,106 psi | 69% | 2598 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 50,401 psi | 79% | 2516 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,256 psi | 80% | 2621 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,379 psi | 65% | 2474 fps | 99.8% |
| Somchem S361 | <<locked>> | 96% | 52,605 psi | 82% | 2651 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 30,589 psi | 48% | 2336 fps | 99% |
| Somchem S385 | <<locked>> | 90% | 39,653 psi | 62% | 2480 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 51,082 psi | 80% | 2503 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,268 psi | 74% | 2500 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,761 psi | 75% | 2516 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,552 psi | 62% | 2411 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,433 psi | 56% | 2379 fps | 97.4% |
| Vihtavuori N165 | <<locked>> | 96% | 41,568 psi | 65% | 2507 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 53,272 psi | 83% | 2628 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,919 psi | 72% | 2510 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,911 psi | 55% | 2379 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 82% | 28,427 psi | 45% | 2283 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,795 psi | 55% | 2356 fps | 99.1% |
| Winchester 748 | <<locked>> | 80% | 53,606 psi | 84% | 2674 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 38,667 psi | 61% | 2480 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,136 psi | 41% | 2287 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,124 psi | 77% | 2608 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 44,846 psi | 70% | 2569 fps | 95.6% |
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 107 powders for .300 RCM loaded with the .311 | 190gr | Winchester Silvertip. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,854 fps; across all powders the maximum-charge window runs from 1,647 fps to 2,854 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 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 190.0 gr projectile in 0.311" calls for a 1:6.0 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-16 rank at the top here: for .300 RCM with the .311 | 190gr | Winchester Silvertip 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.