Load Specifications
Bullet Manufacturer:Sellier & Bellot
Bullet Weight:174 gr
Bullet Diameter:0.306"
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 .306 | 174gr | Sellier & Bellot FMJ BT bullet and 100 powders. The key underlying parameters are shown in the table above.
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>> | 84% | 55,796 psi | 87% | 2684 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 57,580 psi | 90% | 2756 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,375 psi | 85% | 2710 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,072 psi | 88% | 2772 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 57,276 psi | 90% | 2766 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,350 psi | 65% | 2605 fps | 96.2% |
| Accurate 4064 | <<locked>> | 90% | 54,389 psi | 85% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,056 psi | 85% | 2838 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 54,839 psi | 86% | 2789 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 55,869 psi | 88% | 2789 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 57,305 psi | 90% | 2785 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,650 psi | 86% | 2710 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,230 psi | 85% | 2900 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,840 psi | 88% | 2808 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,449 psi | 88% | 2831 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,477 psi | 87% | 2897 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,594 psi | 89% | 2930 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,581 psi | 62% | 2638 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,396 psi | 70% | 2799 fps | 98.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,476 psi | 85% | 2802 fps | 99.7% |
| Bofors RP3 | <<locked>> | 92% | 56,536 psi | 89% | 2825 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 56,391 psi | 88% | 2795 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,477 psi | 87% | 2720 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,855 psi | 89% | 2818 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,955 psi | 86% | 2861 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 92% | 57,479 psi | 90% | 2838 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 98% | 57,159 psi | 90% | 2890 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 96% | 57,566 psi | 90% | 2851 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 86% | 55,434 psi | 87% | 2799 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,721 psi | 81% | 2772 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,897 psi | 86% | 2831 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 53,896 psi | 84% | 2871 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,505 psi | 56% | 1693 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 56,521 psi | 89% | 2799 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,317 psi | 87% | 2776 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,317 psi | 87% | 2772 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,259 psi | 87% | 2753 fps | 98% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,768 psi | 89% | 2822 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,897 psi | 86% | 2776 fps | 97.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 2828 fps | 99.7% |
| IMR 4895 | <<locked>> | 88% | 54,375 psi | 85% | 2808 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 57,305 psi | 90% | 2785 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 57,725 psi | 90% | 2772 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,708 psi | 86% | 2766 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 57,566 psi | 90% | 2762 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 55,085 psi | 86% | 2766 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 57,638 psi | 90% | 2818 fps | 99.3% |
| Lovex S070 | <<locked>> | 98% | 55,332 psi | 87% | 2805 fps | 98.3% |
| Norma 201 | <<locked>> | 88% | 56,898 psi | 89% | 2779 fps | 100% |
| Norma 202 | <<locked>> | 88% | 57,522 psi | 90% | 2779 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,622 psi | 87% | 2818 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 57,638 psi | 90% | 2874 fps | 96.8% |
| Norma URPᴾ | <<locked>> | 100% | 56,840 psi | 89% | 2881 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 90% | 56,144 psi | 88% | 2844 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,535 psi | 87% | 2877 fps | 98.9% |
| Ramshot TAC | <<locked>> | 86% | 57,493 psi | 90% | 2808 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 57,159 psi | 90% | 2825 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,578 psi | 86% | 2740 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,013 psi | 56% | 1732 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,579 psi | 89% | 2762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 57,653 psi | 90% | 2818 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,985 psi | 89% | 2897 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 56,550 psi | 89% | 2933 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 57,595 psi | 90% | 2917 fps | 99.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 57,319 psi | 90% | 2949 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 84% | 54,491 psi | 85% | 2713 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 57,348 psi | 90% | 2779 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,362 psi | 88% | 2815 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 56,391 psi | 88% | 2795 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 57,638 psi | 90% | 2818 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,708 psi | 86% | 2766 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,085 psi | 86% | 2766 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,332 psi | 87% | 2805 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,447 psi | 85% | 2825 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,202 psi | 88% | 2789 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,637 psi | 89% | 2808 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,187 psi | 86% | 2674 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,317 psi | 87% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,520 psi | 85% | 2723 fps | 97.9% |
| Somchem S321 | <<locked>> | 82% | 54,839 psi | 86% | 2769 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 57,682 psi | 90% | 2713 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,564 psi | 87% | 2776 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 56,637 psi | 89% | 2812 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,068 psi | 80% | 2828 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 47,572 psi | 75% | 2710 fps | 96% |
| Vihtavuori N130 | <<locked>> | 82% | 54,882 psi | 86% | 2635 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,434 psi | 87% | 2657 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 57,130 psi | 90% | 2740 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 54,607 psi | 86% | 2713 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,607 psi | 86% | 2743 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 55,680 psi | 87% | 2825 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 86% | 57,740 psi | 90% | 2785 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,289 psi | 88% | 2759 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 54,737 psi | 86% | 2828 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,352 psi | 68% | 2710 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,014 psi | 88% | 2802 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,041 psi | 85% | 2782 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 57,159 psi | 90% | 2890 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,462 psi | 56% | 2641 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 56,753 psi | 89% | 2818 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 49,371 psi | 77% | 2598 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 54,085 psi | 85% | 2710 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,959 psi | 66% | 2526 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,095 psi | 77% | 2674 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 47,021 psi | 74% | 2602 fps | 95.6% |
| Accurate 3100 | <<locked>> | 98% | 38,595 psi | 60% | 2552 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 39,697 psi | 62% | 2523 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,446 psi | 52% | 2457 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 45,484 psi | 71% | 2635 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 38,522 psi | 60% | 2484 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,572 psi | 75% | 2641 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 47,993 psi | 75% | 2621 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,292 psi | 65% | 2667 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,363 psi | 60% | 2510 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,191 psi | 65% | 2572 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 33,823 psi | 53% | 2470 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,040 psi | 52% | 2480 fps | 97.2% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,153 psi | 46% | 2372 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 94% | 35,955 psi | 56% | 2608 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,556 psi | 70% | 2638 fps | 98.6% |
| Bofors RP3 | <<locked>> | 80% | 38,029 psi | 60% | 2516 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 44,121 psi | 69% | 2589 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,081 psi | 77% | 2625 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,354 psi | 73% | 2661 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,285 psi | 80% | 2805 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 80% | 38,783 psi | 61% | 2516 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 88% | 41,046 psi | 64% | 2615 fps | 95% |
| Hodgdon H4350 | <<locked>> | 90% | 47,718 psi | 75% | 2690 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 45,948 psi | 72% | 2644 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,138 psi | 46% | 2320 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,800 psi | 66% | 2618 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 90% | 43,584 psi | 68% | 2687 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,585 psi | 42% | 1512 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,918 psi | 69% | 2595 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 45,542 psi | 71% | 2635 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,451 psi | 63% | 2520 fps | 98.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,931 psi | 67% | 2539 fps | 95.4% |
| IMR 4350 | <<locked>> | 92% | 44,222 psi | 69% | 2615 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,192 psi | 68% | 2572 fps | 95.3% |
| IMR 4831 | <<locked>> | 84% | 32,329 psi | 51% | 2411 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 42,221 psi | 66% | 2602 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 47,572 psi | 75% | 2641 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 53,925 psi | 85% | 2723 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,599 psi | 70% | 2612 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,252 psi | 71% | 2569 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 40,393 psi | 63% | 2523 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 37,753 psi | 59% | 2470 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 40,466 psi | 63% | 2546 fps | 95% |
| Norma 201 | <<locked>> | 80% | 44,498 psi | 70% | 2585 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 44,875 psi | 70% | 2595 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,582 psi | 64% | 2562 fps | 98.7% |
| Norma 204 | <<locked>> | 96% | 50,314 psi | 79% | 2759 fps | 95.2% |
| Norma URP | <<locked>> | 84% | 33,750 psi | 53% | 2454 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 40,016 psi | 63% | 2572 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 40,176 psi | 63% | 2605 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 47,268 psi | 74% | 2644 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,021 psi | 74% | 2667 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,097 psi | 80% | 2687 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,905 psi | 42% | 1549 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,113 psi | 83% | 2717 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,175 psi | 61% | 2500 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,250 psi | 68% | 2671 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,157 psi | 55% | 2543 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 35,578 psi | 56% | 2526 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 37,956 psi | 59% | 2589 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 48,399 psi | 76% | 2621 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,279 psi | 66% | 2539 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 35,694 psi | 56% | 2457 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 44,121 psi | 69% | 2589 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,753 psi | 59% | 2470 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,599 psi | 70% | 2612 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,393 psi | 63% | 2523 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 40,466 psi | 63% | 2546 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,608 psi | 57% | 2507 fps | 97.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,788 psi | 72% | 2625 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,816 psi | 69% | 2602 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,687 psi | 72% | 2536 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,101 psi | 60% | 2408 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,119 psi | 66% | 2516 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 51,314 psi | 80% | 2717 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,397 psi | 71% | 2539 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,339 psi | 71% | 2618 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 36,550 psi | 57% | 2464 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 26,585 psi | 42% | 2300 fps | 95.9% |
| Somchem S385 | <<locked>> | 98% | 44,628 psi | 70% | 2657 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 51,517 psi | 81% | 2592 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,050 psi | 72% | 2526 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,829 psi | 66% | 2520 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,366 psi | 66% | 2530 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,708 psi | 54% | 2402 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 33,083 psi | 52% | 2405 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 47,645 psi | 75% | 2638 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 40,857 psi | 64% | 2520 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 34,766 psi | 54% | 2461 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 90% | 31,285 psi | 49% | 2448 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,748 psi | 48% | 2329 fps | 96.5% |
| Winchester 748 | <<locked>> | 80% | 47,311 psi | 74% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 41,046 psi | 64% | 2615 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,327 psi | 46% | 2451 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,439 psi | 68% | 2608 fps | 99.5% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 100 powders for .300 RCM loaded with the .306 | 174gr | Sellier & Bellot FMJ BT. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,949 fps; across all powders the maximum-charge window runs from 1,693 fps to 2,949 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 174.0 gr projectile in 0.306" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-16, Alliant Reloder-23 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.