Load Specifications
Bullet:.308 | 150gr | Woodleigh HS
Bullet Manufacturer:Woodleigh
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:1:15.5
Load data in caliber .300 RCM with .308 | 150gr | Woodleigh HS bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR 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.
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% | 55,332 psi | 87% | 2900 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 57,595 psi | 90% | 2979 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 57,276 psi | 90% | 2969 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,970 psi | 88% | 2992 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 57,072 psi | 89% | 2959 fps | 96.2% |
| Accurate 4064 | <<locked>> | 94% | 57,217 psi | 90% | 3018 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,997 psi | 83% | 3031 fps | 98.8% |
| Accurate LT-30 | <<locked>> | 82% | 57,696 psi | 90% | 2887 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 54,665 psi | 86% | 2999 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 94% | 55,521 psi | 87% | 2992 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 88% | 57,188 psi | 90% | 3005 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 53,911 psi | 84% | 2930 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,376 psi | 87% | 3061 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 53,954 psi | 85% | 3107 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,347 psi | 87% | 3015 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,172 psi | 86% | 2907 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,028 psi | 88% | 3041 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,372 psi | 81% | 3035 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,086 psi | 88% | 3140 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,651 psi | 57% | 2746 fps | 96.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 57,014 psi | 89% | 2881 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,375 psi | 85% | 3009 fps | 99.1% |
| Bofors RP3 | <<locked>> | 94% | 55,912 psi | 88% | 3031 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,115 psi | 88% | 2989 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,550 psi | 87% | 2936 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 56,536 psi | 89% | 3031 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,520 psi | 85% | 3074 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 82% | 54,114 psi | 85% | 2946 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,245 psi | 87% | 2972 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 57,000 psi | 89% | 3041 fps | 98.9% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 3087 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 98% | 57,130 psi | 90% | 3048 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 88% | 55,158 psi | 86% | 3009 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,558 psi | 75% | 2910 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,317 psi | 85% | 3041 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 98% | 53,766 psi | 84% | 3061 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,070 psi | 55% | 1834 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,275 psi | 88% | 3009 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 54,708 psi | 86% | 2995 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,027 psi | 86% | 2979 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,361 psi | 87% | 2953 fps | 96.8% |
| IMR 4198 | <<locked>> | 82% | 54,955 psi | 86% | 2864 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,824 psi | 86% | 2972 fps | 96.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,241 psi | 79% | 2969 fps | 98.5% |
| IMR 4895 | <<locked>> | 92% | 57,450 psi | 90% | 3074 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 57,188 psi | 90% | 3005 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 57,580 psi | 90% | 2989 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,201 psi | 85% | 2976 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 57,711 psi | 90% | 2976 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 54,650 psi | 86% | 2972 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 57,406 psi | 90% | 3018 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,578 psi | 86% | 2995 fps | 96.9% |
| Norma 201 | <<locked>> | 90% | 56,710 psi | 89% | 2992 fps | 100% |
| Norma 202 | <<locked>> | 90% | 57,203 psi | 90% | 2999 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,187 psi | 86% | 3025 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 52,141 psi | 82% | 3018 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 92% | 55,825 psi | 87% | 3051 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,343 psi | 80% | 3009 fps | 97% |
| Ramshot TAC | <<locked>> | 88% | 57,682 psi | 90% | 3018 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 88% | 57,232 psi | 90% | 3041 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,636 psi | 86% | 2949 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,447 psi | 56% | 1877 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 56,710 psi | 89% | 2986 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 57,464 psi | 90% | 3022 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,434 psi | 88% | 3110 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,999 psi | 88% | 3146 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,562 psi | 82% | 3048 fps | 98.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,881 psi | 83% | 3077 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 88% | 57,667 psi | 90% | 2979 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 57,087 psi | 89% | 2989 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,521 psi | 87% | 3018 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 56,115 psi | 88% | 2989 fps | 96.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 57,406 psi | 90% | 3018 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,201 psi | 85% | 2976 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,650 psi | 86% | 2972 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,578 psi | 86% | 2995 fps | 96.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,492 psi | 89% | 2956 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 57,653 psi | 90% | 3084 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,014 psi | 88% | 2930 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,956 psi | 88% | 2992 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,550 psi | 89% | 3022 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,143 psi | 86% | 2887 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,969 psi | 86% | 2881 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,418 psi | 85% | 2917 fps | 96.6% |
| Somchem S321 | <<locked>> | 84% | 54,940 psi | 86% | 2982 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 57,667 psi | 90% | 2930 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,506 psi | 87% | 2986 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 56,043 psi | 88% | 3018 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,789 psi | 73% | 2969 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 54,897 psi | 86% | 2854 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,317 psi | 87% | 2874 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 56,536 psi | 89% | 2953 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,259 psi | 85% | 2923 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 57,696 psi | 90% | 2999 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 3018 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 86% | 54,143 psi | 85% | 2949 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 55,854 psi | 88% | 2969 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 3025 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,407 psi | 62% | 2825 fps | 96.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,796 psi | 87% | 3002 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 57,653 psi | 90% | 3054 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 3087 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,333 psi | 88% | 3028 fps | 99.9% |
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% | 45,977 psi | 72% | 2759 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,227 psi | 79% | 2867 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,624 psi | 61% | 2667 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,556 psi | 71% | 2825 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,490 psi | 84% | 2904 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 36,492 psi | 57% | 2654 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 37,333 psi | 59% | 2730 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 54,317 psi | 85% | 2841 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 42,308 psi | 66% | 2772 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 35,955 psi | 56% | 2612 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,338 psi | 69% | 2785 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 44,295 psi | 69% | 2785 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,692 psi | 81% | 2999 fps | 99.7% |
| Alliant Power Pro 2000-MR | 53.7 gr | 80% | 38,305 psi | 60% | 2785 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,433 psi | 56% | 2635 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,822 psi | 81% | 2858 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,101 psi | 60% | 2700 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 37,594 psi | 59% | 2743 fps | 95.3% |
| Alliant Reloder-17 | 54.2 gr | 82% | 32,692 psi | 51% | 2641 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 34,301 psi | 54% | 2684 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 53,606 psi | 84% | 2835 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,539 psi | 65% | 2772 fps | 96.7% |
| Bofors RP3 | <<locked>> | 80% | 35,012 psi | 55% | 2635 fps | 97% |
| Bofors RP7 | <<locked>> | 96% | 52,837 psi | 83% | 2936 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,383 psi | 73% | 2782 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,975 psi | 67% | 2805 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,413 psi | 74% | 2949 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 80% | 50,850 psi | 80% | 2897 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,779 psi | 81% | 2920 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 41,031 psi | 64% | 2753 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 96% | 49,269 psi | 77% | 2966 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 96% | 53,766 psi | 84% | 2992 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 42,685 psi | 67% | 2785 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 32,489 psi | 51% | 2582 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,667 psi | 61% | 2749 fps | 98% |
| Hodgdon Superformance | <<locked>> | 96% | 50,024 psi | 78% | 2995 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,150 psi | 41% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,118 psi | 64% | 2736 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 42,018 psi | 66% | 2785 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,724 psi | 59% | 2648 fps | 96.2% |
| IMR 4166 Enduron | <<locked>> | 86% | 48,689 psi | 76% | 2838 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 51,924 psi | 81% | 2822 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 92% | 48,472 psi | 76% | 2861 fps | 95.1% |
| IMR 4831 | <<locked>> | 92% | 38,609 psi | 61% | 2743 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 39,030 psi | 61% | 2730 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 44,338 psi | 69% | 2785 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 50,227 psi | 79% | 2877 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,321 psi | 65% | 2756 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 42,714 psi | 67% | 2713 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 37,753 psi | 59% | 2657 fps | 98.1% |
| Lovex S065 | <<locked>> | 90% | 42,163 psi | 66% | 2746 fps | 95.1% |
| Lovex S070 | <<locked>> | 96% | 48,095 psi | 75% | 2881 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 41,466 psi | 65% | 2726 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 41,727 psi | 65% | 2740 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 37,492 psi | 59% | 2687 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 37,724 psi | 59% | 2733 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 36,956 psi | 58% | 2694 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 96% | 45,078 psi | 71% | 2890 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 44,411 psi | 70% | 2785 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,758 psi | 69% | 2808 fps | 98.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,921 psi | 75% | 2835 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,397 psi | 41% | 1677 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,748 psi | 78% | 2877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 47,355 psi | 74% | 2851 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,769 psi | 62% | 2802 fps | 96.7% |
| ReloadSwiss RS 60 | 52.9 gr | 80% | 32,619 psi | 51% | 2654 fps | 97.8% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 39,972 psi | 63% | 2812 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 43,134 psi | 68% | 2881 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 45,411 psi | 71% | 2779 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,494 psi | 62% | 2677 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 32,938 psi | 52% | 2575 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 96% | 52,837 psi | 83% | 2936 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,163 psi | 66% | 2746 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,321 psi | 65% | 2756 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 37,753 psi | 59% | 2657 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 96% | 48,095 psi | 75% | 2881 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,605 psi | 82% | 2897 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,953 psi | 53% | 2625 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,634 psi | 82% | 2884 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,540 psi | 67% | 2756 fps | 96.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,959 psi | 64% | 2740 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,033 psi | 67% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,621 psi | 56% | 2546 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,747 psi | 75% | 2802 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 48,051 psi | 75% | 2871 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 42,511 psi | 67% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,279 psi | 66% | 2756 fps | 97.9% |
| Somchem S355 | <<locked>> | 80% | 33,808 psi | 53% | 2585 fps | 96% |
| Somchem S365 | <<locked>> | 86% | 29,646 psi | 46% | 2562 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 48,588 psi | 76% | 2759 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,250 psi | 68% | 2687 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,783 psi | 61% | 2667 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,523 psi | 62% | 2674 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 32,184 psi | 50% | 2523 fps | 97% |
| Vihtavuori N160 | <<locked>> | 90% | 39,523 psi | 62% | 2736 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 44,498 psi | 70% | 2782 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 37,985 psi | 60% | 2657 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 38,957 psi | 61% | 2740 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 98% | 36,999 psi | 58% | 2772 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 32,764 psi | 51% | 2546 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 43,918 psi | 69% | 2828 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 49,545 psi | 78% | 2972 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,321 psi | 63% | 2743 fps | 98% |
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 | 150gr | Woodleigh HS. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,146 fps; across all powders the maximum-charge window runs from 1,834 fps to 3,146 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 55–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.5 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, Alliant Reloder-17 rank at the top here: for .300 RCM with the .308 | 150gr | Woodleigh HS 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.