Load Specifications
Bullet Manufacturer:Frontier Bullets
Bullet Weight:150 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 | 150gr | Frontier PH HPFB bullet and 101 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, ReloadSwiss RS 60 and ReloadSwiss RS 52.
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>> | 88% | 56,753 psi | 89% | 2907 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,434 psi | 87% | 2933 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 54,940 psi | 86% | 2927 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 57,450 psi | 90% | 2999 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 54,737 psi | 86% | 2969 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,241 psi | 79% | 2972 fps | 98.2% |
| Accurate LT-30 | <<locked>> | 82% | 55,999 psi | 88% | 2851 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,405 psi | 88% | 2877 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,028 psi | 88% | 3005 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 96% | 56,840 psi | 89% | 2995 fps | 99.4% |
| ADI AR 2219 | <<locked>> | 82% | 57,043 psi | 89% | 2976 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,201 psi | 87% | 2959 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 88% | 55,216 psi | 87% | 2936 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,695 psi | 89% | 3068 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,390 psi | 87% | 3117 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,579 psi | 89% | 3022 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,681 psi | 89% | 2917 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 57,261 psi | 90% | 3041 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,385 psi | 77% | 2982 fps | 98.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 57,363 psi | 90% | 3143 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,216 psi | 87% | 2844 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,709 psi | 87% | 3015 fps | 99.1% |
| Bofors RP3 | <<locked>> | 96% | 56,985 psi | 89% | 3035 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 2995 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,927 psi | 89% | 2940 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,070 psi | 85% | 2982 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,231 psi | 88% | 3087 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 84% | 55,796 psi | 87% | 2956 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,913 psi | 89% | 2982 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,694 psi | 86% | 2989 fps | 98.4% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,679 psi | 84% | 3028 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 90% | 56,536 psi | 89% | 3018 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,498 psi | 71% | 2861 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,535 psi | 87% | 3048 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,882 psi | 55% | 1814 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,375 psi | 85% | 2966 fps | 99.7% |
| IMR 3031 | <<locked>> | 90% | 55,883 psi | 88% | 3002 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,289 psi | 88% | 2979 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,840 psi | 89% | 2956 fps | 96.7% |
| IMR 4198 | <<locked>> | 84% | 56,724 psi | 89% | 2874 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 56,072 psi | 88% | 2976 fps | 96.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,761 psi | 75% | 2910 fps | 97.8% |
| IMR 4895 | <<locked>> | 92% | 55,187 psi | 86% | 3022 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 88% | 55,201 psi | 87% | 2959 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 84% | 55,216 psi | 87% | 2940 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,259 psi | 87% | 2979 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,883 psi | 88% | 2930 fps | 99.6% |
| Lovex S062 | <<locked>> | 94% | 55,796 psi | 87% | 2976 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,984 psi | 86% | 2966 fps | 97.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,475 psi | 82% | 2943 fps | 96.2% |
| Norma 201 | <<locked>> | 90% | 54,665 psi | 86% | 2949 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 55,129 psi | 86% | 2956 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,405 psi | 88% | 3031 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 49,951 psi | 78% | 2966 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 94% | 57,029 psi | 89% | 3054 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,008 psi | 77% | 2953 fps | 96.1% |
| Ramshot TAC | <<locked>> | 88% | 55,535 psi | 87% | 2969 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,897 psi | 86% | 2989 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,449 psi | 88% | 2959 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,259 psi | 55% | 1857 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,578 psi | 86% | 2940 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,361 psi | 87% | 2972 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 57,624 psi | 90% | 3114 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 57,101 psi | 89% | 3146 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,893 psi | 78% | 2992 fps | 97.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,749 psi | 80% | 3018 fps | 97.5% |
| Rottweil R 901 | <<locked>> | 88% | 55,680 psi | 87% | 2936 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,100 psi | 86% | 2946 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 98% | 56,869 psi | 89% | 3025 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 2995 fps | 96.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,984 psi | 86% | 2966 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,259 psi | 87% | 2979 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,796 psi | 87% | 2976 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,475 psi | 82% | 2943 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,491 psi | 85% | 2910 fps | 99.8% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 57,406 psi | 90% | 2986 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,042 psi | 86% | 3035 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 57,595 psi | 90% | 2940 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 57,450 psi | 90% | 2999 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,447 psi | 85% | 2972 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,521 psi | 89% | 2890 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,289 psi | 88% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,898 psi | 88% | 2920 fps | 96.5% |
| Somchem S321 | <<locked>> | 86% | 56,405 psi | 88% | 2992 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,724 psi | 87% | 2890 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,971 psi | 89% | 2992 fps | 99.6% |
| Somchem S355 | <<locked>> | 98% | 57,130 psi | 90% | 3022 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,454 psi | 70% | 2913 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 86% | 56,231 psi | 88% | 2858 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,521 psi | 89% | 2877 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,505 psi | 85% | 2917 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,680 psi | 87% | 2933 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,405 psi | 87% | 2953 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,417 psi | 82% | 2966 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 88% | 55,579 psi | 87% | 2956 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 57,276 psi | 90% | 2976 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,663 psi | 81% | 2972 fps | 98.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,374 psi | 84% | 2949 fps | 99.8% |
| Winchester 748 | <<locked>> | 88% | 55,332 psi | 87% | 3009 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,983 psi | 85% | 3031 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,940 psi | 85% | 2979 fps | 99.7% |
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% | 44,411 psi | 70% | 2717 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,356 psi | 76% | 2825 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,057 psi | 58% | 2628 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,453 psi | 68% | 2776 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 35,041 psi | 55% | 2612 fps | 99.3% |
| Accurate 4350 | <<locked>> | 92% | 38,058 psi | 60% | 2740 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 52,576 psi | 82% | 2802 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,982 psi | 83% | 2828 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,785 psi | 64% | 2726 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 37,028 psi | 58% | 2625 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 53,505 psi | 84% | 2923 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,815 psi | 67% | 2743 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 80% | 42,279 psi | 66% | 2743 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,748 psi | 78% | 2953 fps | 99.4% |
| Alliant Power Pro 2000-MR | 53 gr | 82% | 39,523 psi | 62% | 2799 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,997 psi | 53% | 2589 fps | 96.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,096 psi | 79% | 2822 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,622 psi | 57% | 2651 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 92% | 38,479 psi | 60% | 2746 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 84% | 33,489 psi | 52% | 2651 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,837 psi | 81% | 2795 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,769 psi | 62% | 2720 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 33,330 psi | 52% | 2585 fps | 96.2% |
| Bofors RP7 | <<locked>> | 98% | 53,983 psi | 85% | 2936 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,846 psi | 70% | 2740 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,307 psi | 65% | 2759 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,324 psi | 71% | 2900 fps | 97.9% |
| Hodgdon H322 | <<locked>> | 80% | 49,052 psi | 77% | 2854 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,690 psi | 78% | 2874 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 42,090 psi | 66% | 2759 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 98% | 50,328 psi | 79% | 2969 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 41,089 psi | 64% | 2740 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,112 psi | 52% | 2585 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,057 psi | 58% | 2700 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,875 psi | 41% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,653 psi | 62% | 2690 fps | 97.5% |
| IMR 3031 | <<locked>> | 80% | 40,393 psi | 63% | 2746 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,434 psi | 57% | 2605 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 50,241 psi | 79% | 2848 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 50,328 psi | 79% | 2782 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,603 psi | 78% | 2864 fps | 95% |
| IMR 4831 | <<locked>> | 94% | 39,233 psi | 61% | 2743 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 37,463 psi | 59% | 2684 fps | 96.5% |
| IMR 8208 XBR | <<locked>> | 80% | 42,815 psi | 67% | 2743 fps | 98.8% |
| Lovex D073.5 | <<locked>> | 80% | 48,138 psi | 75% | 2831 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 39,494 psi | 62% | 2707 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 41,278 psi | 65% | 2671 fps | 97.5% |
| Lovex S062 | <<locked>> | 80% | 36,216 psi | 57% | 2612 fps | 97.4% |
| Lovex S065 | <<locked>> | 92% | 43,163 psi | 68% | 2753 fps | 95.1% |
| Lovex S070 | <<locked>> | 98% | 49,298 psi | 77% | 2890 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 40,132 psi | 63% | 2684 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 40,089 psi | 63% | 2697 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 35,984 psi | 56% | 2641 fps | 96% |
| Norma URP | <<locked>> | 92% | 38,551 psi | 60% | 2740 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 35,534 psi | 56% | 2648 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 98% | 46,064 psi | 72% | 2897 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 42,772 psi | 67% | 2736 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,945 psi | 66% | 2756 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,398 psi | 73% | 2792 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,310 psi | 41% | 1663 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,167 psi | 75% | 2835 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 48,660 psi | 76% | 2858 fps | 95.7% |
| ReloadSwiss RS 52 | 50.1 gr | 80% | 37,971 psi | 60% | 2749 fps | 95.9% |
| ReloadSwiss RS 60 | 50.9 gr | 80% | 31,343 psi | 49% | 2602 fps | 96.9% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 40,582 psi | 64% | 2812 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 44,237 psi | 69% | 2887 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 43,859 psi | 69% | 2736 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 38,116 psi | 60% | 2635 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 80% | 31,459 psi | 49% | 2530 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 98% | 53,983 psi | 85% | 2936 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,163 psi | 68% | 2753 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,494 psi | 62% | 2707 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 36,216 psi | 57% | 2612 fps | 97.4% |
| Shooters World SW4350 | <<locked>> | 98% | 49,298 psi | 77% | 2890 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,894 psi | 80% | 2851 fps | 99.6% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 53,722 psi | 84% | 2933 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,635 psi | 54% | 2631 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,836 psi | 80% | 2841 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,770 psi | 64% | 2703 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,334 psi | 62% | 2694 fps | 96.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,568 psi | 65% | 2648 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,330 psi | 54% | 2507 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 48,718 psi | 76% | 2805 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 46,137 psi | 72% | 2822 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 41,176 psi | 65% | 2651 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,538 psi | 64% | 2707 fps | 97.2% |
| Somchem S355 | <<locked>> | 80% | 32,518 psi | 51% | 2539 fps | 95.2% |
| Somchem S365 | <<locked>> | 88% | 30,269 psi | 47% | 2569 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 47,065 psi | 74% | 2723 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,771 psi | 65% | 2648 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,231 psi | 58% | 2628 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,985 psi | 60% | 2631 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 30,835 psi | 48% | 2477 fps | 96.2% |
| Vihtavuori N160 | <<locked>> | 92% | 40,422 psi | 63% | 2743 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 42,728 psi | 67% | 2736 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 80% | 36,622 psi | 57% | 2615 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 92% | 39,668 psi | 62% | 2743 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,562 psi | 53% | 2552 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 42,119 psi | 66% | 2782 fps | 99.3% |
| Winchester 760 | <<locked>> | 98% | 50,328 psi | 79% | 2969 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,493 psi | 60% | 2690 fps | 97.3% |
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 101 powders for .300 RCM loaded with the .308 | 150gr | Frontier PH HPFB. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,146 fps; across all powders the maximum-charge window runs from 1,814 fps to 3,146 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 55–90 %, leaving at least 10 % headroom. The 150.0 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-17 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, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for .300 RCM with the .308 | 150gr | Frontier PH HPFB 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.