Load Specifications
Bullet Manufacturer:North Fork
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:1:13.0
Load data in caliber .300 RCM with .308 | 165gr | NorthFork Bonded Core bullet and 103 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, Alliant Reloder-17 and ReloadSwiss RS 60.
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>> | 86% | 56,942 psi | 89% | 2772 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,332 psi | 87% | 2802 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,506 psi | 87% | 2795 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,595 psi | 90% | 2867 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,100 psi | 86% | 2795 fps | 96.6% |
| Accurate 4064 | <<locked>> | 92% | 55,405 psi | 87% | 2844 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,984 psi | 86% | 2923 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 56,144 psi | 88% | 2877 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 56,913 psi | 89% | 2871 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,201 psi | 87% | 2828 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,854 psi | 88% | 2802 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 57,116 psi | 90% | 2936 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,608 psi | 87% | 2992 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,029 psi | 89% | 2897 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,666 psi | 89% | 2779 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,653 psi | 90% | 2920 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,084 psi | 83% | 2927 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,940 psi | 85% | 2963 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,724 psi | 59% | 2654 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,887 psi | 66% | 2805 fps | 97% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,840 psi | 88% | 2890 fps | 99.6% |
| Bofors RP3 | <<locked>> | 94% | 57,667 psi | 90% | 2910 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,696 psi | 90% | 2877 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,985 psi | 89% | 2812 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,491 psi | 85% | 2858 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,275 psi | 88% | 2956 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 55,753 psi | 87% | 2822 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,014 psi | 89% | 2848 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,085 psi | 86% | 2871 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 98% | 54,520 psi | 85% | 2920 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 96% | 55,201 psi | 87% | 2881 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 88% | 56,681 psi | 89% | 2887 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,255 psi | 77% | 2802 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,956 psi | 88% | 2920 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,187 psi | 86% | 2949 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,288 psi | 55% | 1732 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,389 psi | 85% | 2838 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,507 psi | 89% | 2867 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,652 psi | 89% | 2858 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,652 psi | 89% | 2838 fps | 97.7% |
| IMR 4198 | <<locked>> | 82% | 56,637 psi | 89% | 2736 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 2851 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,173 psi | 88% | 2858 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,938 psi | 81% | 2858 fps | 99.2% |
| IMR 4895 | <<locked>> | 90% | 55,506 psi | 87% | 2897 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 55,201 psi | 87% | 2828 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,448 psi | 87% | 2815 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,782 psi | 87% | 2851 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,622 psi | 87% | 2802 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 56,347 psi | 88% | 2854 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,347 psi | 87% | 2848 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,420 psi | 88% | 2887 fps | 97.9% |
| Norma 201 | <<locked>> | 88% | 54,752 psi | 86% | 2822 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,259 psi | 87% | 2822 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,811 psi | 89% | 2907 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 54,186 psi | 85% | 2910 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 92% | 57,464 psi | 90% | 2933 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,997 psi | 83% | 2904 fps | 98.1% |
| Ramshot TAC | <<locked>> | 86% | 55,390 psi | 87% | 2844 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,897 psi | 86% | 2864 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,144 psi | 88% | 2831 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,752 psi | 56% | 1775 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,520 psi | 85% | 2805 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,390 psi | 87% | 2851 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,389 psi | 85% | 2930 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,522 psi | 90% | 3018 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,636 psi | 86% | 2943 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 2972 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 55,869 psi | 88% | 2805 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,172 psi | 86% | 2818 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,522 psi | 90% | 2900 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 57,696 psi | 90% | 2877 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,347 psi | 87% | 2848 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,782 psi | 87% | 2851 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,347 psi | 88% | 2854 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,420 psi | 88% | 2887 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,767 psi | 87% | 2913 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,595 psi | 90% | 2802 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 53,940 psi | 85% | 2822 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,447 psi | 85% | 2848 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,492 psi | 89% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,507 psi | 89% | 2756 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,796 psi | 87% | 2802 fps | 97.5% |
| Somchem S321 | <<locked>> | 84% | 56,362 psi | 88% | 2861 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,637 psi | 87% | 2756 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,072 psi | 89% | 2867 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 54,302 psi | 85% | 2851 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,443 psi | 76% | 2858 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 56,144 psi | 88% | 2723 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,652 psi | 89% | 2746 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,766 psi | 86% | 2782 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,869 psi | 88% | 2802 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,782 psi | 87% | 2828 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 2904 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 55,550 psi | 87% | 2825 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,537 psi | 90% | 2844 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,622 psi | 87% | 2910 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,901 psi | 64% | 2730 fps | 97.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,392 psi | 90% | 2887 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,463 psi | 87% | 2874 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,520 psi | 85% | 2920 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,779 psi | 53% | 2641 fps | 97.4% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,404 psi | 85% | 2858 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% | 47,500 psi | 74% | 2641 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,953 psi | 81% | 2753 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,030 psi | 63% | 2562 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,992 psi | 74% | 2710 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 48,167 psi | 75% | 2684 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 37,869 psi | 59% | 2552 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 36,347 psi | 57% | 2585 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 43,714 psi | 69% | 2667 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 37,028 psi | 58% | 2513 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,788 psi | 72% | 2677 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 45,847 psi | 72% | 2664 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,563 psi | 84% | 2884 fps | 100% |
| Alliant Power Pro 2000-MR | 51.4 gr | 80% | 39,537 psi | 62% | 2687 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,695 psi | 57% | 2539 fps | 98.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,127 psi | 83% | 2730 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,479 psi | 62% | 2602 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,330 psi | 54% | 2539 fps | 95% |
| Alliant Reloder-17 | 50.6 gr | 80% | 31,589 psi | 50% | 2493 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,473 psi | 49% | 2493 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,622 psi | 57% | 2677 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,699 psi | 67% | 2667 fps | 97.7% |
| Bofors RP3 | <<locked>> | 80% | 36,274 psi | 57% | 2539 fps | 98.1% |
| Bofors RP7 | <<locked>> | 92% | 48,037 psi | 75% | 2720 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,398 psi | 74% | 2664 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,382 psi | 70% | 2694 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,979 psi | 77% | 2838 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 80% | 52,228 psi | 82% | 2769 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,258 psi | 83% | 2795 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,115 psi | 58% | 2539 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 44,483 psi | 70% | 2746 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 94% | 51,851 psi | 81% | 2825 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 44,135 psi | 69% | 2680 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,517 psi | 49% | 2438 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,900 psi | 63% | 2644 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 94% | 48,037 psi | 75% | 2828 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,397 psi | 41% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,235 psi | 66% | 2628 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 43,526 psi | 68% | 2674 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,870 psi | 61% | 2546 fps | 97.4% |
| IMR 4166 Enduron | <<locked>> | 84% | 47,123 psi | 74% | 2677 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 53,388 psi | 84% | 2690 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 48,022 psi | 75% | 2743 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,746 psi | 73% | 2700 fps | 95.6% |
| IMR 4831 | <<locked>> | 88% | 35,085 psi | 55% | 2536 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 40,437 psi | 63% | 2631 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 45,788 psi | 72% | 2677 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 51,779 psi | 81% | 2762 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,612 psi | 67% | 2644 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,685 psi | 68% | 2602 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 38,740 psi | 61% | 2552 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 40,814 psi | 64% | 2592 fps | 95.6% |
| Lovex S070 | <<locked>> | 92% | 43,903 psi | 69% | 2674 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 42,786 psi | 67% | 2618 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 43,076 psi | 68% | 2631 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,870 psi | 61% | 2589 fps | 97.9% |
| Norma URP | <<locked>> | 88% | 36,593 psi | 57% | 2582 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 38,218 psi | 60% | 2598 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 40,785 psi | 64% | 2677 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 45,513 psi | 71% | 2677 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,121 psi | 71% | 2700 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,269 psi | 77% | 2723 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,687 psi | 42% | 1588 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,169 psi | 80% | 2756 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,801 psi | 67% | 2635 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,133 psi | 64% | 2697 fps | 97.9% |
| ReloadSwiss RS 60 | 50.6 gr | 80% | 33,634 psi | 53% | 2566 fps | 98.9% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,056 psi | 56% | 2598 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 38,856 psi | 61% | 2661 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 46,630 psi | 73% | 2661 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,640 psi | 64% | 2569 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 34,026 psi | 53% | 2480 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 48,037 psi | 75% | 2720 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,814 psi | 64% | 2592 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,612 psi | 67% | 2644 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,740 psi | 61% | 2552 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 43,903 psi | 69% | 2674 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,983 psi | 55% | 2530 fps | 96.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,969 psi | 85% | 2753 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,918 psi | 69% | 2654 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,076 psi | 66% | 2631 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,063 psi | 69% | 2572 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,593 psi | 57% | 2441 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 45,963 psi | 72% | 2644 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 49,313 psi | 77% | 2753 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,743 psi | 69% | 2575 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,468 psi | 68% | 2648 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 34,954 psi | 55% | 2490 fps | 97.3% |
| Somchem S365 | <<locked>> | 82% | 27,035 psi | 42% | 2369 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 49,748 psi | 78% | 2635 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,367 psi | 70% | 2569 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,016 psi | 63% | 2556 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,654 psi | 64% | 2562 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,185 psi | 52% | 2428 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 35,955 psi | 56% | 2533 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 45,774 psi | 72% | 2671 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 39,204 psi | 61% | 2552 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 35,302 psi | 55% | 2533 fps | 95% |
| Vihtavuori N555 | <<locked>> | 94% | 33,707 psi | 53% | 2569 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,530 psi | 46% | 2346 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 45,281 psi | 71% | 2717 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 44,715 psi | 70% | 2749 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,575 psi | 49% | 2572 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,597 psi | 65% | 2638 fps | 98.9% |
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 103 powders for .300 RCM loaded with the .308 | 165gr | NorthFork Bonded Core. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,018 fps; across all powders the maximum-charge window runs from 1,732 fps to 3,018 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:13.0 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. Alliant Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 RCM with the .308 | 165gr | NorthFork Bonded Core 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.