Load Specifications
Load data in caliber .300 RCM with .308 | 165gr | RWS Doppelkern bullet and 98 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% | 56,028 psi | 88% | 2776 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 55,056 psi | 86% | 2805 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,521 psi | 89% | 2867 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 57,537 psi | 90% | 2854 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,989 psi | 66% | 2694 fps | 96% |
| Accurate 4064 | <<locked>> | 90% | 54,911 psi | 86% | 2851 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,723 psi | 86% | 2933 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 86% | 55,187 psi | 86% | 2881 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 56,202 psi | 88% | 2881 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 57,624 psi | 90% | 2884 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,100 psi | 86% | 2805 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,839 psi | 86% | 2999 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 56,376 psi | 88% | 2904 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,782 psi | 89% | 2927 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,767 psi | 87% | 2992 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 57,290 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,045 psi | 63% | 2723 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,759 psi | 70% | 2887 fps | 98.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,853 psi | 86% | 2894 fps | 99.7% |
| Bofors RP3 | <<locked>> | 92% | 56,971 psi | 89% | 2920 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 56,956 psi | 89% | 2890 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,724 psi | 87% | 2812 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 57,334 psi | 90% | 2917 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,608 psi | 87% | 2963 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 54,375 psi | 85% | 2881 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 98% | 57,537 psi | 90% | 2986 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 94% | 54,563 psi | 86% | 2890 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 86% | 55,738 psi | 87% | 2890 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,083 psi | 82% | 2864 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,361 psi | 87% | 2927 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,636 psi | 86% | 2966 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,679 psi | 56% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 57,014 psi | 89% | 2894 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,898 psi | 88% | 2874 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,825 psi | 87% | 2867 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,593 psi | 87% | 2844 fps | 97.9% |
| IMR 4350ᴾ | <<locked>> | 100% | 57,159 psi | 90% | 2913 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,477 psi | 87% | 2871 fps | 97.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,303 psi | 87% | 2927 fps | 99.7% |
| IMR 4895 | <<locked>> | 88% | 54,853 psi | 86% | 2907 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 57,624 psi | 90% | 2884 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,143 psi | 86% | 2858 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,621 psi | 86% | 2808 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 55,579 psi | 87% | 2861 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,752 psi | 86% | 2861 fps | 98.8% |
| Lovex S070 | <<locked>> | 98% | 55,637 psi | 87% | 2894 fps | 98.1% |
| Norma 201 | <<locked>> | 88% | 57,508 psi | 90% | 2877 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,462 psi | 85% | 2828 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,956 psi | 88% | 2910 fps | 100% |
| Norma 204 | <<locked>> | 98% | 54,259 psi | 85% | 2907 fps | 95.9% |
| Norma URPᴾ | <<locked>> | 100% | 57,348 psi | 90% | 2976 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 90% | 56,869 psi | 89% | 2940 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,014 psi | 88% | 2969 fps | 98.8% |
| Ramshot TAC | <<locked>> | 84% | 54,346 psi | 85% | 2848 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 57,609 psi | 90% | 2920 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,984 psi | 86% | 2831 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,143 psi | 57% | 1801 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 57,072 psi | 89% | 2861 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,505 psi | 85% | 2858 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 57,580 psi | 90% | 2995 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 57,101 psi | 89% | 3028 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,462 psi | 85% | 2956 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,027 psi | 85% | 2982 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 84% | 54,998 psi | 86% | 2808 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,549 psi | 85% | 2825 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,753 psi | 89% | 2910 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 56,956 psi | 89% | 2890 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,752 psi | 86% | 2861 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,143 psi | 86% | 2858 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,579 psi | 87% | 2861 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,637 psi | 87% | 2894 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,955 psi | 86% | 2920 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,623 psi | 89% | 2884 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 57,188 psi | 90% | 2904 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,274 psi | 87% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,521 psi | 87% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,187 psi | 86% | 2815 fps | 97.8% |
| Somchem S321 | <<locked>> | 82% | 55,288 psi | 87% | 2864 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,752 psi | 86% | 2762 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,927 psi | 88% | 2871 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 57,087 psi | 89% | 2907 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,605 psi | 81% | 2923 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,167 psi | 75% | 2802 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 82% | 54,969 psi | 86% | 2726 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,535 psi | 87% | 2746 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 57,580 psi | 90% | 2835 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,071 psi | 86% | 2808 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,998 psi | 86% | 2835 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,275 psi | 88% | 2917 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 54,578 psi | 86% | 2831 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,724 psi | 89% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,376 psi | 87% | 2923 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,918 psi | 69% | 2799 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,536 psi | 89% | 2894 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,549 psi | 85% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,143 psi | 85% | 2933 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,766 psi | 56% | 2723 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 88% | 57,101 psi | 89% | 2913 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% | 49,574 psi | 78% | 2687 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,337 psi | 66% | 2612 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,574 psi | 78% | 2766 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 47,166 psi | 74% | 2687 fps | 95.3% |
| Accurate 3100 | <<locked>> | 98% | 39,102 psi | 61% | 2635 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 40,045 psi | 63% | 2608 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,649 psi | 53% | 2533 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 45,687 psi | 72% | 2723 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 38,827 psi | 61% | 2569 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,776 psi | 75% | 2730 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 48,182 psi | 76% | 2710 fps | 100% |
| Alliant Power Pro 2000-MR | 54 gr | 80% | 41,611 psi | 65% | 2753 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,624 psi | 61% | 2595 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,394 psi | 65% | 2657 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 33,866 psi | 53% | 2543 fps | 95.2% |
| Alliant Reloder-17 | 53.2 gr | 80% | 33,330 psi | 52% | 2559 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,198 psi | 49% | 2503 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 36,216 psi | 57% | 2687 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,049 psi | 71% | 2726 fps | 98.5% |
| Bofors RP3 | <<locked>> | 80% | 38,363 psi | 60% | 2598 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 47,297 psi | 74% | 2730 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,342 psi | 77% | 2717 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,717 psi | 73% | 2753 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,793 psi | 81% | 2900 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 80% | 39,088 psi | 61% | 2598 fps | 96.4% |
| Hodgdon H414 | <<locked>> | 90% | 44,135 psi | 69% | 2756 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 90% | 48,153 psi | 75% | 2782 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 46,122 psi | 72% | 2733 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,312 psi | 46% | 2392 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,264 psi | 66% | 2707 fps | 99.4% |
| Hodgdon Superformance | 64.6 gr | 92% | 47,123 psi | 74% | 2835 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,527 psi | 42% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,150 psi | 69% | 2680 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 45,934 psi | 72% | 2726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,785 psi | 64% | 2602 fps | 98.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,265 psi | 68% | 2625 fps | 95.2% |
| IMR 4350 | <<locked>> | 94% | 47,355 psi | 74% | 2753 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,453 psi | 68% | 2657 fps | 95.1% |
| IMR 4831 | <<locked>> | 86% | 34,882 psi | 55% | 2546 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 42,395 psi | 66% | 2687 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 47,776 psi | 75% | 2730 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 44,889 psi | 70% | 2700 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,527 psi | 71% | 2657 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 40,727 psi | 64% | 2608 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 37,985 psi | 60% | 2552 fps | 95.1% |
| Lovex S070 | <<locked>> | 90% | 43,410 psi | 68% | 2684 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 44,773 psi | 70% | 2674 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 45,150 psi | 71% | 2680 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,756 psi | 64% | 2644 fps | 98.5% |
| Norma 204 | <<locked>> | 96% | 50,734 psi | 80% | 2848 fps | 95% |
| Norma URP | <<locked>> | 84% | 34,098 psi | 53% | 2536 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 40,350 psi | 63% | 2657 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 40,422 psi | 63% | 2687 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 47,747 psi | 75% | 2736 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,355 psi | 74% | 2759 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,416 psi | 81% | 2776 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,832 psi | 42% | 1608 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,505 psi | 84% | 2808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,206 psi | 66% | 2641 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,801 psi | 69% | 2766 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,476 psi | 56% | 2628 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 35,839 psi | 56% | 2608 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 38,377 psi | 60% | 2671 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 48,863 psi | 77% | 2717 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,685 psi | 67% | 2628 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 35,940 psi | 56% | 2539 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 47,297 psi | 74% | 2730 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,985 psi | 60% | 2552 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,889 psi | 70% | 2700 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,727 psi | 64% | 2608 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 43,410 psi | 68% | 2684 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,028 psi | 58% | 2592 fps | 97.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,093 psi | 72% | 2713 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,280 psi | 69% | 2694 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,919 psi | 72% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,305 psi | 60% | 2490 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,511 psi | 67% | 2598 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 51,866 psi | 81% | 2812 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,701 psi | 72% | 2625 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,847 psi | 72% | 2710 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 36,825 psi | 58% | 2546 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 26,731 psi | 42% | 2372 fps | 95.5% |
| Somchem S385 | <<locked>> | 98% | 45,020 psi | 71% | 2743 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 51,779 psi | 81% | 2680 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,282 psi | 73% | 2615 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,090 psi | 66% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,598 psi | 67% | 2615 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,925 psi | 55% | 2480 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 35,491 psi | 56% | 2536 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 48,037 psi | 75% | 2726 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 41,176 psi | 65% | 2605 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 35,012 psi | 55% | 2539 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 31,575 psi | 49% | 2526 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,111 psi | 49% | 2408 fps | 96.3% |
| Winchester 748 | <<locked>> | 80% | 47,805 psi | 75% | 2772 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 44,353 psi | 70% | 2759 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,530 psi | 46% | 2526 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,830 psi | 69% | 2697 fps | 99.4% |
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 98 powders for .300 RCM loaded with the .308 | 165gr | RWS Doppelkern. Alliant Reloder-17 delivers the highest muzzle velocity at 3,028 fps; across all powders the maximum-charge window runs from 1,762 fps to 3,028 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 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 165.0 gr projectile in 0.308" calls for a 1:16.5 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. Alliant Power Pro 2000-MR, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 RCM with the .308 | 165gr | RWS Doppelkern 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.