Load Specifications
Bullet:.308 | 150gr | Barnes RRLP
Bullet Manufacturer:Barnes
Bullet Weight:150 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 WSM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81.3 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:11.0
Load data in caliber .300 WSM with .308 | 150gr | Barnes RRLP 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 Power Pro 2000-MR, ReloadSwiss RS 60 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% | 56,333 psi | 88% | 2936 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,795 psi | 86% | 2959 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,636 psi | 86% | 2953 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,969 psi | 86% | 3009 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 55,390 psi | 87% | 2946 fps | 96.1% |
| Accurate 4064 | <<locked>> | 92% | 54,694 psi | 86% | 3002 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,418 psi | 85% | 3074 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 88% | 55,419 psi | 87% | 3035 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 56,434 psi | 88% | 3028 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,447 psi | 85% | 2986 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,071 psi | 86% | 2966 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,085 psi | 86% | 3153 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,275 psi | 88% | 3054 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,811 psi | 87% | 2940 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,985 psi | 89% | 3077 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,344 psi | 82% | 3077 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 57,305 psi | 90% | 3179 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,376 psi | 59% | 2789 fps | 97.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,481 psi | 65% | 2940 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,216 psi | 87% | 3045 fps | 99.3% |
| Bofors RP3 | <<locked>> | 94% | 57,159 psi | 90% | 3074 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,174 psi | 90% | 3031 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,391 psi | 88% | 2969 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 57,479 psi | 90% | 3068 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,622 psi | 87% | 3114 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 54,346 psi | 85% | 2972 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,505 psi | 85% | 3025 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 96% | 55,579 psi | 87% | 3100 fps | 97.2% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 56,130 psi | 88% | 3054 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 88% | 55,941 psi | 88% | 3045 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,602 psi | 76% | 2953 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,245 psi | 87% | 3077 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,926 psi | 86% | 3107 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,244 psi | 55% | 1854 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,159 psi | 88% | 3031 fps | 99.9% |
| IMR 3031 | <<locked>> | 92% | 57,551 psi | 90% | 3054 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,955 psi | 86% | 2999 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 94% | 54,621 psi | 86% | 2966 fps | 96.8% |
| IMR 4198 | <<locked>> | 82% | 55,970 psi | 88% | 2897 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,766 psi | 84% | 2999 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,579 psi | 87% | 3012 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,542 psi | 71% | 2904 fps | 97.8% |
| IMR 4895 | <<locked>> | 90% | 54,824 psi | 86% | 3054 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 54,447 psi | 85% | 2986 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,737 psi | 86% | 2969 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,969 psi | 86% | 3009 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,216 psi | 87% | 2959 fps | 99.7% |
| Lovex S062 | <<locked>> | 92% | 55,724 psi | 87% | 3012 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,839 psi | 86% | 3002 fps | 98.1% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,796 psi | 87% | 3038 fps | 97.3% |
| Norma 201 | <<locked>> | 90% | 57,522 psi | 90% | 3028 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,737 psi | 86% | 2986 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,144 psi | 88% | 3064 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 53,519 psi | 84% | 3061 fps | 99% |
| Ramshot Big Game | <<locked>> | 92% | 56,884 psi | 89% | 3091 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,417 psi | 82% | 3051 fps | 97.4% |
| Ramshot TAC | <<locked>> | 86% | 54,969 psi | 86% | 3002 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,302 psi | 85% | 3018 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,564 psi | 87% | 2986 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,621 psi | 56% | 1896 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 57,580 psi | 90% | 3018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,911 psi | 86% | 3005 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 57,464 psi | 90% | 3150 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 56,971 psi | 89% | 3182 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,070 psi | 85% | 3097 fps | 98.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,085 psi | 85% | 3120 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 86% | 55,085 psi | 86% | 2963 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,578 psi | 86% | 2976 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 56,724 psi | 89% | 3058 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 57,174 psi | 90% | 3031 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,839 psi | 86% | 3002 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,969 psi | 86% | 3009 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,724 psi | 87% | 3012 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,796 psi | 87% | 3038 fps | 97.3% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,319 psi | 90% | 2989 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,027 psi | 86% | 3071 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,666 psi | 89% | 2963 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,116 psi | 90% | 3035 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 57,421 psi | 90% | 3058 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,796 psi | 87% | 2920 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,985 psi | 88% | 2917 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,332 psi | 87% | 2953 fps | 96.9% |
| Somchem S321 | <<locked>> | 84% | 55,941 psi | 88% | 3022 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,230 psi | 87% | 2917 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,362 psi | 88% | 3022 fps | 99.8% |
| Somchem S355 | <<locked>> | 96% | 56,927 psi | 89% | 3054 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,790 psi | 75% | 3009 fps | 100% |
| Unknown powder | <<locked>> | 98% | 54,679 psi | 86% | 3071 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 84% | 54,505 psi | 85% | 2871 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,347 psi | 87% | 2900 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 57,740 psi | 90% | 2992 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,462 psi | 85% | 2953 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 54,781 psi | 86% | 2986 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 55,332 psi | 87% | 3041 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 84% | 54,085 psi | 85% | 2989 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,522 psi | 90% | 3025 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,593 psi | 87% | 3094 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,364 psi | 63% | 2867 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,956 psi | 89% | 3041 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,564 psi | 87% | 3045 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,579 psi | 87% | 3100 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,013 psi | 86% | 3031 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% | 46,789 psi | 73% | 2792 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,140 psi | 80% | 2904 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,378 psi | 62% | 2703 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,672 psi | 70% | 2841 fps | 99.9% |
| Accurate 2700 | <<locked>> | 92% | 52,025 psi | 82% | 2890 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 37,246 psi | 58% | 2690 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 38,276 psi | 60% | 2772 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 42,960 psi | 67% | 2808 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 36,593 psi | 57% | 2648 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,034 psi | 71% | 2822 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 44,976 psi | 70% | 2815 fps | 100% |
| Alliant Power Pro 2000-MR | 55.1 gr | 80% | 39,001 psi | 61% | 2825 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,114 psi | 57% | 2671 fps | 97.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,504 psi | 82% | 2890 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,740 psi | 61% | 2733 fps | 96.7% |
| Alliant Reloder-16 | <<locked>> | 90% | 38,421 psi | 60% | 2785 fps | 95.9% |
| Alliant Reloder-17 | 55.6 gr | 82% | 33,286 psi | 52% | 2680 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,909 psi | 52% | 2667 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,638 psi | 61% | 2871 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,264 psi | 66% | 2808 fps | 97.1% |
| Bofors RP3 | <<locked>> | 80% | 35,650 psi | 56% | 2671 fps | 97.4% |
| Bofors RP7 | <<locked>> | 94% | 50,560 psi | 79% | 2920 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,818 psi | 73% | 2812 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,772 psi | 69% | 2841 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,240 psi | 76% | 2989 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 80% | 47,819 psi | 75% | 2867 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 39,146 psi | 61% | 2733 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 48,269 psi | 76% | 2972 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 98% | 52,678 psi | 83% | 2995 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 43,366 psi | 68% | 2822 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 33,112 psi | 52% | 2618 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,159 psi | 58% | 2733 fps | 97.8% |
| Hodgdon Superformance | <<locked>> | 96% | 50,894 psi | 80% | 3035 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,136 psi | 41% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,566 psi | 60% | 2700 fps | 97.6% |
| IMR 3031 | <<locked>> | 80% | 39,392 psi | 62% | 2756 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,926 psi | 56% | 2625 fps | 95.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 48,457 psi | 76% | 2854 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 52,649 psi | 83% | 2851 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 50,430 psi | 79% | 2940 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 49,284 psi | 77% | 2900 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 37,695 psi | 59% | 2743 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 39,682 psi | 62% | 2769 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 80% | 45,034 psi | 71% | 2822 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 80% | 51,068 psi | 80% | 2913 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,018 psi | 66% | 2789 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 43,163 psi | 68% | 2746 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 38,261 psi | 60% | 2690 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 42,830 psi | 67% | 2782 fps | 95.5% |
| Lovex S070 | <<locked>> | 94% | 46,093 psi | 72% | 2867 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 42,206 psi | 66% | 2762 fps | 99% |
| Norma 202 | <<locked>> | 80% | 42,467 psi | 67% | 2776 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,130 psi | 60% | 2723 fps | 97.1% |
| Norma URP | <<locked>> | 90% | 38,566 psi | 60% | 2776 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 37,666 psi | 59% | 2733 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 94% | 43,076 psi | 68% | 2874 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 45,121 psi | 71% | 2822 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,512 psi | 70% | 2844 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,660 psi | 76% | 2871 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,571 psi | 42% | 1699 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,444 psi | 79% | 2910 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 45,223 psi | 71% | 2831 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,495 psi | 63% | 2838 fps | 97.1% |
| ReloadSwiss RS 60 | 54.3 gr | 80% | 33,243 psi | 52% | 2694 fps | 98.2% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 38,087 psi | 60% | 2789 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,176 psi | 65% | 2864 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 46,021 psi | 72% | 2812 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,219 psi | 63% | 2713 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 33,591 psi | 53% | 2612 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 94% | 50,560 psi | 79% | 2920 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,830 psi | 67% | 2782 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,018 psi | 66% | 2789 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 38,261 psi | 60% | 2690 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 94% | 46,093 psi | 72% | 2867 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,447 psi | 84% | 2930 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,505 psi | 54% | 2661 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,316 psi | 84% | 2913 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,265 psi | 68% | 2792 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,524 psi | 65% | 2772 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,540 psi | 68% | 2720 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,129 psi | 57% | 2579 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 48,486 psi | 76% | 2841 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 48,820 psi | 77% | 2907 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 43,192 psi | 68% | 2723 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,062 psi | 67% | 2792 fps | 98.2% |
| Somchem S355 | <<locked>> | 80% | 34,418 psi | 54% | 2618 fps | 96.4% |
| Somchem S365 | <<locked>> | 84% | 28,340 psi | 44% | 2539 fps | 95.1% |
| Unknown powder | <<locked>> | 88% | 39,349 psi | 62% | 2779 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 48,385 psi | 76% | 2779 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,191 psi | 65% | 2671 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,378 psi | 62% | 2700 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,581 psi | 62% | 2697 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 29,356 psi | 46% | 2467 fps | 96% |
| Vihtavuori N160 | <<locked>> | 86% | 36,999 psi | 58% | 2697 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 47,471 psi | 74% | 2877 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 39,305 psi | 62% | 2713 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 37,318 psi | 58% | 2740 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 35,433 psi | 56% | 2753 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,212 psi | 49% | 2526 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 48,298 psi | 76% | 2930 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 48,269 psi | 76% | 2972 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,068 psi | 80% | 2966 fps | 99.7% |
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 102 powders for .300 WSM loaded with the .308 | 150gr | Barnes RRLP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,854 fps to 3,182 fps. Accurate 4350 gives the best case fill at 100 %, and 102 of the 102 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 1:11.0 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 150gr | Barnes RRLP 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.