Load Specifications
Bullet:.308 | 165gr | Hornady SP
Bullet Manufacturer:Hornady
Bullet Weight:165 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:1:14.5
Load data in caliber .300 RCM with .308 | 165gr | Hornady SP bullet and 101 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.
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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% | 54,650 psi | 86% | 2749 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,478 psi | 89% | 2822 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,666 psi | 89% | 2818 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,810 psi | 86% | 2835 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,927 psi | 88% | 2815 fps | 96.9% |
| Accurate 4064 | <<locked>> | 92% | 56,521 psi | 89% | 2864 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 56,246 psi | 88% | 2946 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 88% | 57,159 psi | 90% | 2900 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 54,723 psi | 86% | 2844 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,927 psi | 88% | 2848 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,913 psi | 89% | 2822 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,869 psi | 89% | 3018 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,520 psi | 85% | 2867 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,392 psi | 90% | 2792 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 55,143 psi | 86% | 2890 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,882 psi | 84% | 2946 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,376 psi | 87% | 2989 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,595 psi | 60% | 2680 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,902 psi | 67% | 2835 fps | 97.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 57,043 psi | 89% | 2913 fps | 99.7% |
| Bofors RP3 | <<locked>> | 92% | 55,071 psi | 86% | 2881 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 55,317 psi | 87% | 2851 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,696 psi | 90% | 2828 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,521 psi | 87% | 2881 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,653 psi | 90% | 2982 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 56,652 psi | 89% | 2838 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 56,028 psi | 88% | 2894 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 98% | 55,637 psi | 87% | 2946 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 96% | 56,260 psi | 88% | 2904 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 86% | 54,041 psi | 85% | 2854 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,154 psi | 79% | 2822 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 57,217 psi | 90% | 2943 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,347 psi | 88% | 2979 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,433 psi | 56% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,434 psi | 87% | 2858 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 57,479 psi | 90% | 2887 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,667 psi | 90% | 2881 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,522 psi | 90% | 2858 fps | 98% |
| IMR 4198 | <<locked>> | 82% | 57,406 psi | 90% | 2753 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,463 psi | 87% | 2874 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 96% | 57,276 psi | 90% | 2884 fps | 97.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,084 psi | 83% | 2884 fps | 99.4% |
| IMR 4895 | <<locked>> | 90% | 56,550 psi | 89% | 2920 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,927 psi | 88% | 2848 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,202 psi | 88% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,855 psi | 89% | 2871 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,594 psi | 89% | 2825 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 57,377 psi | 90% | 2874 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,478 psi | 89% | 2874 fps | 98.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 2910 fps | 98.2% |
| Norma 201 | <<locked>> | 88% | 55,767 psi | 87% | 2841 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,391 psi | 88% | 2844 fps | 100% |
| Norma 203B | <<locked>> | 90% | 54,346 psi | 85% | 2877 fps | 99.9% |
| Norma 204ᴾ | <<locked>> | 100% | 56,101 psi | 88% | 2923 fps | 96% |
| Norma URPᴾ | <<locked>> | 100% | 55,376 psi | 87% | 2936 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 90% | 54,882 psi | 86% | 2900 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,012 psi | 85% | 2927 fps | 98.3% |
| Ramshot TAC | <<locked>> | 86% | 56,492 psi | 89% | 2867 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 86% | 56,144 psi | 88% | 2887 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 57,072 psi | 89% | 2851 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,897 psi | 56% | 1785 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,593 psi | 87% | 2828 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,507 psi | 89% | 2877 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,477 psi | 87% | 2953 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 55,100 psi | 86% | 2989 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 56,101 psi | 88% | 2969 fps | 99.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,680 psi | 87% | 2995 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 86% | 56,739 psi | 89% | 2822 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,202 psi | 88% | 2838 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,853 psi | 86% | 2874 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 55,317 psi | 87% | 2851 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,478 psi | 89% | 2874 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,855 psi | 89% | 2871 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 57,377 psi | 90% | 2874 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 2910 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,681 psi | 89% | 2936 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,868 psi | 86% | 2844 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,376 psi | 87% | 2867 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,276 psi | 90% | 2779 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,464 psi | 90% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,927 psi | 89% | 2828 fps | 97.8% |
| Somchem S321 | <<locked>> | 84% | 57,348 psi | 90% | 2881 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,681 psi | 89% | 2779 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,491 psi | 85% | 2838 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 55,317 psi | 87% | 2871 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,588 psi | 78% | 2881 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 57,058 psi | 89% | 2743 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,450 psi | 90% | 2762 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,956 psi | 88% | 2805 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,840 psi | 89% | 2822 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,695 psi | 89% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 54,331 psi | 85% | 2877 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 56,623 psi | 89% | 2848 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,984 psi | 86% | 2818 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 57,043 psi | 89% | 2940 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,032 psi | 66% | 2756 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,766 psi | 86% | 2858 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 56,521 psi | 89% | 2897 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,637 psi | 87% | 2946 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,447 psi | 54% | 2667 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 55,317 psi | 87% | 2877 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 48,182 psi | 76% | 2657 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,808 psi | 83% | 2769 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,959 psi | 64% | 2582 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,776 psi | 75% | 2730 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 49,008 psi | 77% | 2707 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 38,711 psi | 61% | 2572 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,635 psi | 54% | 2549 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 44,295 psi | 69% | 2684 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 37,753 psi | 59% | 2536 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,325 psi | 73% | 2694 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,615 psi | 73% | 2680 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,437 psi | 63% | 2717 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,275 psi | 58% | 2556 fps | 98.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 54,128 psi | 85% | 2749 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,001 psi | 63% | 2618 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,085 psi | 55% | 2566 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,314 psi | 51% | 2523 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,226 psi | 47% | 2461 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,391 psi | 59% | 2707 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,598 psi | 68% | 2690 fps | 98% |
| Bofors RP3 | <<locked>> | 80% | 36,999 psi | 58% | 2562 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 45,948 psi | 72% | 2690 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,196 psi | 76% | 2684 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,411 psi | 71% | 2720 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,038 psi | 78% | 2864 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 80% | 53,142 psi | 83% | 2789 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,797 psi | 59% | 2562 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 92% | 45,585 psi | 71% | 2772 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 92% | 49,501 psi | 78% | 2792 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 44,686 psi | 70% | 2697 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,124 psi | 47% | 2408 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,669 psi | 64% | 2667 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 92% | 45,687 psi | 72% | 2792 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,469 psi | 41% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,004 psi | 67% | 2651 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 44,454 psi | 70% | 2694 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,639 psi | 62% | 2569 fps | 97.7% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,933 psi | 70% | 2644 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 54,157 psi | 85% | 2710 fps | 100% |
| IMR 4350 | <<locked>> | 94% | 45,905 psi | 72% | 2713 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,773 psi | 70% | 2671 fps | 95.2% |
| IMR 4831 | <<locked>> | 86% | 33,678 psi | 53% | 2507 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 40,988 psi | 64% | 2648 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 46,325 psi | 73% | 2694 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 52,591 psi | 82% | 2779 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,410 psi | 68% | 2664 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,411 psi | 70% | 2625 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 39,537 psi | 62% | 2575 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 39,175 psi | 61% | 2566 fps | 95.2% |
| Lovex S070 | <<locked>> | 92% | 44,744 psi | 70% | 2697 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 43,540 psi | 68% | 2641 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 43,671 psi | 68% | 2648 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,407 psi | 62% | 2608 fps | 98.1% |
| Norma 204 | <<locked>> | 98% | 52,605 psi | 82% | 2864 fps | 95.2% |
| Norma URP | <<locked>> | 86% | 35,143 psi | 55% | 2556 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 39,088 psi | 61% | 2621 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 41,742 psi | 65% | 2703 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 46,398 psi | 73% | 2700 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,861 psi | 72% | 2720 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,212 psi | 79% | 2746 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,760 psi | 42% | 1594 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,996 psi | 81% | 2776 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,627 psi | 68% | 2657 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,032 psi | 66% | 2720 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,418 psi | 54% | 2589 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,811 psi | 58% | 2621 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,682 psi | 62% | 2690 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 47,529 psi | 74% | 2684 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,466 psi | 65% | 2592 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 34,751 psi | 54% | 2503 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 45,948 psi | 72% | 2690 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,175 psi | 61% | 2566 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,410 psi | 68% | 2664 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,537 psi | 62% | 2575 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 44,744 psi | 70% | 2697 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,621 psi | 56% | 2549 fps | 96.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,628 psi | 70% | 2671 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,772 psi | 67% | 2651 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,904 psi | 70% | 2595 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,362 psi | 59% | 2461 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,859 psi | 69% | 2615 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 50,285 psi | 79% | 2776 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,498 psi | 70% | 2595 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,396 psi | 70% | 2671 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 35,694 psi | 56% | 2513 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 27,586 psi | 43% | 2392 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 50,676 psi | 79% | 2654 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,237 psi | 71% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,915 psi | 64% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,408 psi | 65% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,881 psi | 53% | 2448 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 86% | 36,593 psi | 57% | 2552 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 46,572 psi | 73% | 2690 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 39,885 psi | 63% | 2572 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 36,129 psi | 57% | 2559 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 32,343 psi | 51% | 2539 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,095 psi | 47% | 2369 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 46,050 psi | 72% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 45,788 psi | 72% | 2776 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,356 psi | 48% | 2536 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,322 psi | 66% | 2657 fps | 99.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 101 powders for .300 RCM loaded with the .308 | 165gr | Hornady SP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,018 fps; across all powders the maximum-charge window runs from 1,742 fps to 3,018 fps. Accurate 4350 gives the best case fill at 100 %, and 101 of the 101 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, 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.