Load Specifications
Bullet Manufacturer:Sellier & Bellot
Bullet Weight:180 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:1:16.5
Load data in caliber .300 RCM with .311 | 180gr | Sellier & Bellot SPRN bullet and 103 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% | 55,463 psi | 87% | 2648 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,476 psi | 85% | 2671 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,985 psi | 88% | 2736 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,826 psi | 89% | 2733 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,165 psi | 71% | 2648 fps | 97.8% |
| Accurate 4064 | <<locked>> | 88% | 54,795 psi | 86% | 2723 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,781 psi | 86% | 2815 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 54,636 psi | 86% | 2753 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,709 psi | 87% | 2756 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,562 psi | 82% | 2789 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,985 psi | 89% | 2749 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,578 psi | 86% | 2671 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,259 psi | 85% | 2871 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,489 psi | 82% | 2792 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,898 psi | 88% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,478 psi | 89% | 2799 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,535 psi | 87% | 2867 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 57,014 psi | 89% | 2900 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,706 psi | 81% | 2782 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,656 psi | 67% | 2671 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,536 psi | 59% | 2572 fps | 96.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,196 psi | 76% | 2844 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,418 psi | 85% | 2769 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 56,579 psi | 89% | 2789 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,333 psi | 88% | 2769 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,911 psi | 86% | 2680 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,608 psi | 89% | 2782 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 57,319 psi | 90% | 2805 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 96% | 57,217 psi | 90% | 2864 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 92% | 54,172 psi | 85% | 2772 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 84% | 55,245 psi | 87% | 2762 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,550 psi | 87% | 2792 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,766 psi | 86% | 2795 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,853 psi | 84% | 2844 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 56% | 1683 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,159 psi | 88% | 2759 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,477 psi | 87% | 2740 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,984 psi | 86% | 2736 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,650 psi | 86% | 2717 fps | 98.5% |
| IMR 4350 | <<locked>> | 98% | 56,826 psi | 89% | 2795 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,839 psi | 86% | 2746 fps | 98.4% |
| IMR 4831 | <<locked>> | 98% | 55,071 psi | 86% | 2805 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 54,259 psi | 85% | 2776 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,985 psi | 89% | 2749 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,650 psi | 86% | 2726 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,334 psi | 90% | 2726 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,201 psi | 87% | 2733 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,259 psi | 85% | 2740 fps | 99.3% |
| Lovex S070 | <<locked>> | 96% | 55,303 psi | 87% | 2776 fps | 98.8% |
| Norma 201 | <<locked>> | 86% | 56,623 psi | 89% | 2743 fps | 100% |
| Norma 202 | <<locked>> | 86% | 57,261 psi | 90% | 2743 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,680 psi | 87% | 2785 fps | 100% |
| Norma 204 | <<locked>> | 98% | 57,609 psi | 90% | 2848 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 47,790 psi | 75% | 2795 fps | 97.4% |
| Norma URP | <<locked>> | 98% | 57,305 psi | 90% | 2854 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 56,362 psi | 88% | 2812 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,869 psi | 88% | 2851 fps | 99.3% |
| Ramshot TAC | <<locked>> | 84% | 57,188 psi | 90% | 2776 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,043 psi | 89% | 2792 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,667 psi | 90% | 2753 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,448 psi | 57% | 1722 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,580 psi | 90% | 2792 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 57,246 psi | 90% | 2864 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,739 psi | 89% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,215 psi | 85% | 2835 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 57,261 psi | 90% | 2920 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 84% | 57,551 psi | 90% | 2720 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 57,363 psi | 90% | 2746 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,449 psi | 88% | 2782 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 2766 fps | 95.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,517 psi | 79% | 2766 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 94% | 56,333 psi | 88% | 2769 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,259 psi | 85% | 2740 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,650 psi | 86% | 2726 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,201 psi | 87% | 2733 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,303 psi | 87% | 2776 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,737 psi | 86% | 2795 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,753 psi | 87% | 2756 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,550 psi | 89% | 2776 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,621 psi | 86% | 2635 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,129 psi | 86% | 2638 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,288 psi | 85% | 2694 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,024 psi | 78% | 2759 fps | 96.4% |
| Somchem S335 | <<locked>> | 86% | 57,334 psi | 90% | 2674 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,477 psi | 87% | 2746 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,608 psi | 89% | 2779 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,419 psi | 87% | 2851 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,387 psi | 81% | 2746 fps | 97.5% |
| Vihtavuori N130 | <<locked>> | 82% | 57,580 psi | 90% | 2635 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 54,926 psi | 86% | 2618 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 57,363 psi | 90% | 2703 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,360 psi | 85% | 2677 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,476 psi | 85% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,130 psi | 88% | 2799 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 57,319 psi | 90% | 2746 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,144 psi | 88% | 2723 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,071 psi | 86% | 2805 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,268 psi | 74% | 2743 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,854 psi | 88% | 2769 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 57,696 psi | 90% | 2795 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,537 psi | 90% | 2867 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,305 psi | 60% | 2697 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,362 psi | 88% | 2782 fps | 100% |
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% | 52,156 psi | 82% | 2602 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,092 psi | 71% | 2539 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,388 psi | 82% | 2687 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,613 psi | 68% | 2516 fps | 95.4% |
| Accurate 3100 | <<locked>> | 94% | 36,724 psi | 58% | 2484 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 42,641 psi | 67% | 2539 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,604 psi | 50% | 2379 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 48,211 psi | 76% | 2651 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 40,973 psi | 64% | 2507 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 46,224 psi | 72% | 2677 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,314 psi | 79% | 2654 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,155 psi | 80% | 2628 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,048 psi | 69% | 2694 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 46,180 psi | 72% | 2684 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,785 psi | 64% | 2530 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,859 psi | 69% | 2595 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,807 psi | 50% | 2392 fps | 95.6% |
| Alliant Reloder-17 | 52.5 gr | 80% | 35,375 psi | 55% | 2510 fps | 98.6% |
| Alliant Reloder-19 | <<locked>> | 96% | 45,614 psi | 71% | 2674 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,630 psi | 43% | 2303 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,360 psi | 55% | 2516 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,736 psi | 53% | 2530 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,587 psi | 75% | 2661 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 40,712 psi | 64% | 2536 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 41,365 psi | 65% | 2510 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,750 psi | 81% | 2635 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,429 psi | 77% | 2677 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,278 psi | 65% | 2539 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 86% | 41,147 psi | 64% | 2589 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 86% | 44,759 psi | 70% | 2612 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 48,733 psi | 76% | 2661 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,153 psi | 46% | 2293 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,846 psi | 70% | 2638 fps | 99.9% |
| Hodgdon Superformance | 61 gr | 88% | 43,410 psi | 68% | 2661 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 42% | 1506 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,557 psi | 73% | 2612 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 48,805 psi | 76% | 2648 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,004 psi | 67% | 2539 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,266 psi | 71% | 2559 fps | 96.7% |
| IMR 4350 | <<locked>> | 88% | 41,727 psi | 65% | 2543 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,335 psi | 63% | 2490 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 30,589 psi | 48% | 2336 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 44,976 psi | 70% | 2625 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 50,314 psi | 79% | 2654 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,776 psi | 75% | 2628 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,747 psi | 75% | 2585 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 43,076 psi | 68% | 2543 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,491 psi | 56% | 2392 fps | 95.3% |
| Lovex S070 | <<locked>> | 84% | 38,174 psi | 60% | 2470 fps | 95% |
| Norma 201 | <<locked>> | 80% | 47,210 psi | 74% | 2602 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,456 psi | 74% | 2602 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,236 psi | 68% | 2582 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 47,007 psi | 74% | 2677 fps | 95.2% |
| Norma MRP | <<locked>> | 96% | 41,785 psi | 65% | 2677 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 31,807 psi | 50% | 2379 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 42,830 psi | 67% | 2595 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 37,782 psi | 59% | 2526 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 50,154 psi | 79% | 2667 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,922 psi | 78% | 2687 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,954 psi | 85% | 2700 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,166 psi | 43% | 1539 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,698 psi | 65% | 2526 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,601 psi | 73% | 2700 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,623 psi | 59% | 2572 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,562 psi | 53% | 2451 fps | 95.8% |
| ReloadSwiss RS 70 | 56 gr | 84% | 35,621 psi | 56% | 2510 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 51,329 psi | 80% | 2635 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,976 psi | 70% | 2556 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,290 psi | 60% | 2484 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 98% | 51,213 psi | 80% | 2713 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 98% | 47,355 psi | 74% | 2710 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 84% | 41,365 psi | 65% | 2510 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,491 psi | 56% | 2392 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,776 psi | 75% | 2628 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,076 psi | 68% | 2543 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 38,174 psi | 60% | 2470 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,305 psi | 62% | 2533 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,646 psi | 76% | 2644 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,586 psi | 73% | 2621 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,182 psi | 76% | 2543 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,350 psi | 63% | 2418 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,479 psi | 62% | 2441 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 46,905 psi | 74% | 2707 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 48,022 psi | 75% | 2546 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,472 psi | 76% | 2641 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 39,073 psi | 61% | 2487 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 28,601 psi | 45% | 2336 fps | 97.7% |
| Somchem S385 | <<locked>> | 94% | 42,206 psi | 66% | 2589 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 54,186 psi | 85% | 2592 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,617 psi | 76% | 2533 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,599 psi | 70% | 2530 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,020 psi | 71% | 2539 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,115 psi | 58% | 2421 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 33,243 psi | 52% | 2385 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 50,430 psi | 79% | 2651 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,337 psi | 68% | 2530 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,634 psi | 51% | 2379 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 86% | 29,965 psi | 47% | 2382 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,837 psi | 51% | 2359 fps | 98% |
| Winchester 748 | <<locked>> | 80% | 50,517 psi | 79% | 2697 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,379 psi | 65% | 2592 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,804 psi | 44% | 2385 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,325 psi | 73% | 2628 fps | 99.9% |
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 103 powders for .300 RCM loaded with the .311 | 180gr | Sellier & Bellot SPRN. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,920 fps; across all powders the maximum-charge window runs from 1,683 fps to 2,920 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 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 180.0 gr projectile in 0.311" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 .311 | 180gr | Sellier & Bellot SPRN 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.