Load Specifications
Bullet Manufacturer:Sellier & Bellot
Bullet Weight:180 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:1:11.5
Load data in caliber .300 RCM with .308 | 180gr | Sellier & Bellot HPC bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, 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.
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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% | 55,666 psi | 87% | 2628 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 57,392 psi | 90% | 2700 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,172 psi | 85% | 2651 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,043 psi | 88% | 2717 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 56,913 psi | 89% | 2707 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,002 psi | 64% | 2549 fps | 96.3% |
| Accurate 4064 | <<locked>> | 92% | 57,638 psi | 90% | 2743 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 57,479 psi | 90% | 2831 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 54,694 psi | 86% | 2730 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 55,579 psi | 87% | 2726 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 57,159 psi | 90% | 2730 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,505 psi | 85% | 2654 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,128 psi | 85% | 2844 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,593 psi | 87% | 2749 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,173 psi | 88% | 2769 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,969 psi | 86% | 2835 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,507 psi | 89% | 2871 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,450 psi | 62% | 2585 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,859 psi | 69% | 2736 fps | 98.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,317 psi | 85% | 2743 fps | 99.8% |
| Bofors RP3 | <<locked>> | 92% | 56,362 psi | 88% | 2766 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 56,333 psi | 88% | 2740 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,172 psi | 86% | 2661 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,347 psi | 88% | 2756 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,621 psi | 86% | 2802 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 92% | 57,116 psi | 90% | 2779 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 98% | 56,782 psi | 89% | 2831 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 96% | 57,305 psi | 90% | 2792 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 86% | 55,230 psi | 87% | 2740 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,184 psi | 80% | 2710 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,433 psi | 85% | 2769 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 57,566 psi | 90% | 2871 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,592 psi | 56% | 1650 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 56,434 psi | 88% | 2740 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,259 psi | 87% | 2720 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,172 psi | 86% | 2713 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 54,926 psi | 86% | 2690 fps | 98.1% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 2759 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,810 psi | 86% | 2717 fps | 98% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 2772 fps | 99.8% |
| IMR 4895 | <<locked>> | 90% | 57,609 psi | 90% | 2799 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 57,159 psi | 90% | 2730 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 57,348 psi | 90% | 2713 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,302 psi | 85% | 2703 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 57,392 psi | 90% | 2700 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 55,013 psi | 86% | 2710 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 57,363 psi | 90% | 2756 fps | 99.3% |
| Lovex S070 | <<locked>> | 98% | 55,071 psi | 86% | 2746 fps | 98.4% |
| Norma 201 | <<locked>> | 88% | 56,710 psi | 89% | 2720 fps | 100% |
| Norma 202 | <<locked>> | 88% | 57,363 psi | 90% | 2720 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,332 psi | 87% | 2759 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 57,072 psi | 89% | 2812 fps | 96.9% |
| Norma URPᴾ | <<locked>> | 100% | 56,362 psi | 88% | 2818 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 90% | 55,854 psi | 88% | 2782 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,013 psi | 86% | 2815 fps | 98.9% |
| Ramshot TAC | <<locked>> | 86% | 57,392 psi | 90% | 2749 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 57,014 psi | 89% | 2766 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,476 psi | 85% | 2684 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,129 psi | 57% | 1693 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,565 psi | 89% | 2707 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 57,377 psi | 90% | 2759 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,753 psi | 89% | 2835 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 56,057 psi | 88% | 2867 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 57,043 psi | 89% | 2851 fps | 99.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 56,971 psi | 89% | 2887 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 86% | 57,551 psi | 90% | 2697 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 57,174 psi | 90% | 2717 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 55,941 psi | 88% | 2756 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 56,333 psi | 88% | 2740 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 98% | 57,363 psi | 90% | 2756 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,302 psi | 85% | 2703 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,013 psi | 86% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,071 psi | 86% | 2746 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,172 psi | 85% | 2766 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,767 psi | 87% | 2730 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,420 psi | 88% | 2749 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,795 psi | 86% | 2612 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 54,926 psi | 86% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,273 psi | 85% | 2664 fps | 98% |
| Somchem S321 | <<locked>> | 82% | 54,781 psi | 86% | 2713 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 57,551 psi | 90% | 2654 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,434 psi | 87% | 2720 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 56,173 psi | 88% | 2753 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,676 psi | 79% | 2769 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 47,282 psi | 74% | 2654 fps | 96.1% |
| Vihtavuori N130 | <<locked>> | 82% | 54,607 psi | 86% | 2575 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,042 psi | 86% | 2598 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 56,884 psi | 89% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 54,491 psi | 85% | 2657 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,186 psi | 85% | 2684 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 55,477 psi | 87% | 2766 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 86% | 57,609 psi | 90% | 2726 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 55,840 psi | 88% | 2697 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 54,346 psi | 85% | 2769 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,149 psi | 68% | 2657 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,608 psi | 87% | 2743 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 57,580 psi | 90% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 56,782 psi | 89% | 2831 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,128 psi | 55% | 2585 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 88% | 56,304 psi | 88% | 2756 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% | 49,037 psi | 77% | 2539 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,780 psi | 84% | 2651 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,742 psi | 65% | 2470 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,863 psi | 77% | 2618 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 46,731 psi | 73% | 2546 fps | 95.7% |
| Accurate 3100 | <<locked>> | 98% | 38,464 psi | 60% | 2500 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 39,494 psi | 62% | 2467 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,228 psi | 52% | 2405 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 45,339 psi | 71% | 2579 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 38,508 psi | 60% | 2434 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,427 psi | 74% | 2585 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 47,674 psi | 75% | 2562 fps | 100% |
| Alliant Power Pro 2000-MR | 49.8 gr | 80% | 41,118 psi | 64% | 2612 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,159 psi | 60% | 2457 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,060 psi | 64% | 2520 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 33,562 psi | 53% | 2415 fps | 95.8% |
| Alliant Reloder-17 | 49 gr | 80% | 32,822 psi | 51% | 2428 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,095 psi | 46% | 2329 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 94% | 35,723 psi | 56% | 2556 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,425 psi | 70% | 2582 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 37,913 psi | 59% | 2464 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 43,976 psi | 69% | 2536 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,907 psi | 77% | 2569 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,166 psi | 72% | 2605 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,140 psi | 80% | 2749 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 80% | 38,696 psi | 61% | 2464 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 88% | 40,828 psi | 64% | 2562 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 90% | 47,543 psi | 75% | 2638 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 45,788 psi | 72% | 2592 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,008 psi | 45% | 2270 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,568 psi | 65% | 2559 fps | 99.6% |
| Hodgdon Superformance | 58.3 gr | 90% | 43,265 psi | 68% | 2628 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,600 psi | 42% | 1476 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,758 psi | 69% | 2539 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 45,498 psi | 71% | 2579 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,437 psi | 63% | 2467 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,844 psi | 67% | 2487 fps | 95.6% |
| IMR 4350 | <<locked>> | 92% | 44,092 psi | 69% | 2562 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,018 psi | 67% | 2520 fps | 95.5% |
| IMR 4831 | <<locked>> | 84% | 32,314 psi | 51% | 2365 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 42,076 psi | 66% | 2549 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 47,427 psi | 74% | 2585 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 53,766 psi | 84% | 2664 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,512 psi | 70% | 2559 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,237 psi | 71% | 2516 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 40,393 psi | 63% | 2470 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 37,478 psi | 59% | 2415 fps | 95.5% |
| Lovex S070 | <<locked>> | 88% | 40,350 psi | 63% | 2493 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 44,251 psi | 69% | 2530 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 44,686 psi | 70% | 2539 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,437 psi | 63% | 2510 fps | 98.8% |
| Norma 204 | <<locked>> | 96% | 49,922 psi | 78% | 2700 fps | 95.3% |
| Norma URP | <<locked>> | 84% | 33,663 psi | 53% | 2408 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 39,842 psi | 62% | 2520 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 39,813 psi | 62% | 2549 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 47,137 psi | 74% | 2592 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,847 psi | 73% | 2612 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,937 psi | 80% | 2631 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,948 psi | 42% | 1512 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,040 psi | 83% | 2657 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,928 psi | 61% | 2448 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,221 psi | 68% | 2618 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,940 psi | 55% | 2490 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,924 psi | 52% | 2418 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 35,346 psi | 55% | 2477 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 48,312 psi | 76% | 2566 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,293 psi | 66% | 2487 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 35,520 psi | 56% | 2408 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 43,976 psi | 69% | 2536 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,478 psi | 59% | 2415 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,512 psi | 70% | 2559 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,393 psi | 63% | 2470 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 40,350 psi | 63% | 2493 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,535 psi | 57% | 2457 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,658 psi | 72% | 2572 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,743 psi | 69% | 2549 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,629 psi | 72% | 2480 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,014 psi | 60% | 2356 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 41,800 psi | 66% | 2461 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 51,111 psi | 80% | 2657 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,165 psi | 71% | 2484 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,208 psi | 71% | 2562 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 36,332 psi | 57% | 2411 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 26,455 psi | 41% | 2254 fps | 96.1% |
| Somchem S385 | <<locked>> | 98% | 44,237 psi | 69% | 2602 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 51,445 psi | 81% | 2536 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,977 psi | 72% | 2474 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,698 psi | 65% | 2464 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,163 psi | 66% | 2474 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,519 psi | 54% | 2349 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 32,837 psi | 51% | 2356 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 47,514 psi | 74% | 2582 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 40,770 psi | 64% | 2467 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 34,606 psi | 54% | 2411 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 31,154 psi | 49% | 2398 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,632 psi | 48% | 2283 fps | 96.6% |
| Winchester 748 | <<locked>> | 80% | 47,021 psi | 74% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 40,828 psi | 64% | 2562 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,037 psi | 46% | 2402 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,207 psi | 68% | 2552 fps | 99.5% |
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 100 powders for .300 RCM loaded with the .308 | 180gr | Sellier & Bellot HPC. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,887 fps; across all powders the maximum-charge window runs from 1,650 fps to 2,887 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 55–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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. Alliant Power Pro 2000-MR, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 RCM with the .308 | 180gr | Sellier & Bellot HPC 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.