Load Specifications
Load data in caliber .300 RCM with .308 | 168gr | Sellier & Bellot HPBT bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Power Pro 2000-MR.
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>> | 86% | 57,595 psi | 90% | 2756 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,246 psi | 88% | 2789 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,202 psi | 88% | 2779 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,433 psi | 85% | 2799 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,724 psi | 87% | 2782 fps | 97% |
| Accurate 4064 | <<locked>> | 92% | 56,159 psi | 88% | 2828 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,854 psi | 88% | 2910 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 88% | 56,753 psi | 89% | 2861 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 57,566 psi | 90% | 2858 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,796 psi | 87% | 2812 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,608 psi | 89% | 2785 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,333 psi | 88% | 2979 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,740 psi | 90% | 2881 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,217 psi | 90% | 2759 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,810 psi | 86% | 2854 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,780 psi | 84% | 2913 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,708 psi | 86% | 2949 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,261 psi | 60% | 2648 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,540 psi | 67% | 2799 fps | 97.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,507 psi | 89% | 2877 fps | 99.7% |
| Bofors RP3 | <<locked>> | 92% | 54,737 psi | 86% | 2848 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,824 psi | 86% | 2812 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,522 psi | 90% | 2795 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,201 psi | 87% | 2844 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,334 psi | 90% | 2943 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 56,318 psi | 88% | 2802 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,624 psi | 90% | 2831 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,767 psi | 87% | 2858 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 98% | 55,303 psi | 87% | 2910 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 96% | 55,883 psi | 88% | 2867 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 88% | 57,334 psi | 90% | 2871 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,966 psi | 78% | 2792 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,695 psi | 89% | 2904 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,985 psi | 88% | 2943 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,433 psi | 56% | 1719 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,013 psi | 86% | 2822 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 57,261 psi | 90% | 2851 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,276 psi | 90% | 2844 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,232 psi | 90% | 2825 fps | 98% |
| IMR 4198 | <<locked>> | 82% | 57,130 psi | 90% | 2717 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,085 psi | 86% | 2838 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,797 psi | 89% | 2844 fps | 97.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,707 psi | 83% | 2848 fps | 99.4% |
| IMR 4895 | <<locked>> | 90% | 56,202 psi | 88% | 2884 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,796 psi | 87% | 2812 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,072 psi | 88% | 2799 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,478 psi | 89% | 2838 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,434 psi | 88% | 2792 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 56,985 psi | 89% | 2838 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,999 psi | 88% | 2838 fps | 98.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 2874 fps | 98.2% |
| Norma 201 | <<locked>> | 88% | 55,332 psi | 87% | 2805 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,898 psi | 88% | 2805 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,493 psi | 90% | 2890 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 55,883 psi | 88% | 2890 fps | 96% |
| Norma URPᴾ | <<locked>> | 100% | 54,969 psi | 86% | 2900 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 90% | 54,389 psi | 85% | 2864 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,751 psi | 84% | 2894 fps | 98.3% |
| Ramshot TAC | <<locked>> | 86% | 55,985 psi | 88% | 2831 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,579 psi | 87% | 2851 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,753 psi | 89% | 2815 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,911 psi | 56% | 1762 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,056 psi | 86% | 2789 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,043 psi | 88% | 2841 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,114 psi | 86% | 2917 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,723 psi | 86% | 2953 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 2933 fps | 99.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,535 psi | 87% | 2963 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 86% | 56,478 psi | 89% | 2789 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,101 psi | 88% | 2808 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,607 psi | 86% | 2838 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,824 psi | 86% | 2812 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,999 psi | 88% | 2838 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,478 psi | 89% | 2838 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,985 psi | 89% | 2838 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 2874 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,507 psi | 89% | 2900 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,621 psi | 86% | 2812 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,056 psi | 86% | 2831 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,029 psi | 89% | 2743 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,101 psi | 89% | 2740 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,478 psi | 89% | 2792 fps | 97.8% |
| Somchem S321 | <<locked>> | 84% | 57,000 psi | 89% | 2844 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,260 psi | 88% | 2743 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 53,954 psi | 85% | 2799 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 54,969 psi | 86% | 2835 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,211 psi | 77% | 2848 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 56,681 psi | 89% | 2707 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,203 psi | 90% | 2726 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,738 psi | 87% | 2769 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,492 psi | 89% | 2785 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,478 psi | 89% | 2815 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 57,537 psi | 90% | 2894 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 86% | 56,463 psi | 88% | 2815 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,708 psi | 86% | 2785 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,405 psi | 88% | 2897 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,611 psi | 65% | 2720 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,331 psi | 85% | 2822 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 56,173 psi | 88% | 2861 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,303 psi | 87% | 2910 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,272 psi | 54% | 2641 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 88% | 55,071 psi | 86% | 2841 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% | 47,993 psi | 75% | 2625 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,518 psi | 82% | 2736 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,567 psi | 64% | 2549 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,587 psi | 75% | 2697 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 48,689 psi | 76% | 2671 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 38,363 psi | 60% | 2539 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,461 psi | 54% | 2520 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 44,222 psi | 69% | 2654 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 37,637 psi | 59% | 2507 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,253 psi | 72% | 2664 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,456 psi | 73% | 2651 fps | 100% |
| Alliant Power Pro 2000-MR | 51.3 gr | 80% | 40,016 psi | 63% | 2677 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,159 psi | 58% | 2526 fps | 98.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,940 psi | 85% | 2717 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,929 psi | 63% | 2589 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,766 psi | 54% | 2533 fps | 95.5% |
| Alliant Reloder-17 | 50.5 gr | 80% | 31,981 psi | 50% | 2487 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,008 psi | 47% | 2431 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,173 psi | 58% | 2674 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,207 psi | 68% | 2654 fps | 98% |
| Bofors RP3 | <<locked>> | 80% | 36,724 psi | 58% | 2530 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 45,643 psi | 72% | 2657 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,877 psi | 75% | 2648 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,976 psi | 70% | 2684 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,617 psi | 78% | 2825 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 80% | 52,765 psi | 83% | 2753 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,911 psi | 84% | 2782 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,550 psi | 59% | 2530 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 92% | 45,339 psi | 71% | 2740 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 92% | 49,298 psi | 77% | 2762 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 44,599 psi | 70% | 2664 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,907 psi | 47% | 2375 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,466 psi | 63% | 2635 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 94% | 48,704 psi | 76% | 2822 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,310 psi | 41% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,728 psi | 67% | 2615 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 44,280 psi | 69% | 2664 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,523 psi | 62% | 2539 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,730 psi | 70% | 2612 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 53,809 psi | 84% | 2674 fps | 100% |
| IMR 4350 | <<locked>> | 94% | 45,672 psi | 72% | 2680 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,686 psi | 70% | 2641 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 33,504 psi | 53% | 2480 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 40,901 psi | 64% | 2618 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 46,253 psi | 72% | 2664 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 52,359 psi | 82% | 2746 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,134 psi | 68% | 2631 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,338 psi | 69% | 2595 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 39,421 psi | 62% | 2543 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 38,986 psi | 61% | 2536 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 44,469 psi | 70% | 2664 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 43,207 psi | 68% | 2605 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 43,598 psi | 68% | 2615 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,305 psi | 62% | 2579 fps | 98.2% |
| Norma 204 | <<locked>> | 98% | 52,054 psi | 82% | 2828 fps | 95.1% |
| Norma URP | <<locked>> | 86% | 34,766 psi | 54% | 2520 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 38,711 psi | 61% | 2589 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 41,336 psi | 65% | 2667 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 45,992 psi | 72% | 2664 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,658 psi | 72% | 2687 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,821 psi | 78% | 2710 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,600 psi | 42% | 1572 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,750 psi | 81% | 2743 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,683 psi | 64% | 2569 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,974 psi | 66% | 2690 fps | 98.2% |
| ReloadSwiss RS 60 | 50.5 gr | 80% | 34,040 psi | 53% | 2556 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,593 psi | 57% | 2589 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,349 psi | 62% | 2657 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 47,326 psi | 74% | 2651 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,336 psi | 65% | 2562 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 34,664 psi | 54% | 2477 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 45,643 psi | 72% | 2657 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,986 psi | 61% | 2536 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,134 psi | 68% | 2631 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,421 psi | 62% | 2543 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 44,469 psi | 70% | 2664 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,592 psi | 56% | 2523 fps | 97% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,425 psi | 70% | 2641 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,757 psi | 67% | 2625 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,744 psi | 70% | 2566 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,202 psi | 58% | 2431 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,569 psi | 68% | 2582 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 49,850 psi | 78% | 2740 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,179 psi | 69% | 2562 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,034 psi | 69% | 2638 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 35,404 psi | 55% | 2480 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 27,383 psi | 43% | 2362 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 50,488 psi | 79% | 2621 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,049 psi | 71% | 2559 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,698 psi | 64% | 2546 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,350 psi | 65% | 2552 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,794 psi | 53% | 2421 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 34,156 psi | 54% | 2470 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 46,311 psi | 73% | 2657 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 39,668 psi | 62% | 2539 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 35,795 psi | 56% | 2526 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 32,097 psi | 50% | 2507 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,849 psi | 47% | 2339 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 45,832 psi | 72% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 45,339 psi | 71% | 2740 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,139 psi | 47% | 2507 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,090 psi | 66% | 2625 fps | 99.1% |
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 118 powders for .300 RCM loaded with the .308 | 168gr | Sellier & Bellot HPBT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,979 fps; across all powders the maximum-charge window runs from 1,719 fps to 2,979 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, 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. Alliant Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .300 RCM with the .308 | 168gr | Sellier & Bellot HPBT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.