Load Specifications
Load data in caliber .300 WSM with .308 | 150gr | Nosler bullet and 95 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, Hodgdon Superformance 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>> | 84% | 55,985 psi | 88% | 2953 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 55,027 psi | 86% | 2979 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,768 psi | 89% | 3048 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,186 psi | 85% | 2969 fps | 96.4% |
| Accurate 4064 | <<locked>> | 90% | 54,940 psi | 86% | 3025 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,056 psi | 86% | 3110 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 55,201 psi | 87% | 3054 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 56,289 psi | 88% | 3058 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 57,595 psi | 90% | 3058 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,187 psi | 86% | 2986 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,114 psi | 86% | 3182 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 56,333 psi | 88% | 3077 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 57,043 psi | 89% | 3104 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 3169 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 53,766 psi | 84% | 3150 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,263 psi | 63% | 2884 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,078 psi | 71% | 3051 fps | 97.9% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,056 psi | 86% | 3068 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 57,421 psi | 90% | 3100 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 57,145 psi | 90% | 3061 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,912 psi | 88% | 2992 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 57,435 psi | 90% | 3091 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,651 psi | 87% | 3140 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 90% | 54,433 psi | 85% | 3051 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 96% | 54,317 psi | 85% | 3104 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 94% | 54,897 psi | 86% | 3068 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 86% | 55,753 psi | 87% | 3068 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,301 psi | 82% | 3035 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,376 psi | 87% | 3100 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,853 psi | 86% | 3140 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,505 psi | 56% | 1886 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 57,029 psi | 89% | 3071 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,782 psi | 87% | 3051 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,883 psi | 88% | 3041 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,738 psi | 87% | 3015 fps | 97.5% |
| IMR 4350ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 3087 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,651 psi | 87% | 3041 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,434 psi | 87% | 3097 fps | 99.5% |
| IMR 4895 | <<locked>> | 88% | 54,853 psi | 86% | 3081 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 57,595 psi | 90% | 3058 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,071 psi | 86% | 3031 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,665 psi | 86% | 2982 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 55,651 psi | 87% | 3035 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,998 psi | 86% | 3035 fps | 98.6% |
| Lovex S070 | <<locked>> | 98% | 56,086 psi | 88% | 3071 fps | 97.9% |
| Norma 201 | <<locked>> | 88% | 57,522 psi | 90% | 3054 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,679 psi | 86% | 3005 fps | 100% |
| Norma 203B | <<locked>> | 90% | 56,217 psi | 88% | 3091 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 57,508 psi | 90% | 3150 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 90% | 56,913 psi | 89% | 3114 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,362 psi | 88% | 3146 fps | 98.6% |
| Ramshot TAC | <<locked>> | 84% | 54,549 psi | 85% | 3022 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,128 psi | 85% | 3041 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,085 psi | 86% | 3005 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,100 psi | 57% | 1932 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 57,130 psi | 90% | 3038 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,795 psi | 86% | 3031 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 57,740 psi | 90% | 3176 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 57,290 psi | 90% | 3209 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,694 psi | 86% | 3130 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,273 psi | 85% | 3156 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 84% | 55,056 psi | 86% | 2986 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,462 psi | 85% | 2999 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,971 psi | 89% | 3087 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 57,145 psi | 90% | 3061 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,998 psi | 86% | 3035 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,071 psi | 86% | 3031 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,651 psi | 87% | 3035 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 56,086 psi | 88% | 3071 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,158 psi | 86% | 3094 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,840 psi | 89% | 3058 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 57,334 psi | 90% | 3081 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,434 psi | 87% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,680 psi | 87% | 2936 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,419 psi | 87% | 2986 fps | 97.5% |
| Somchem S321 | <<locked>> | 82% | 55,521 psi | 87% | 3041 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,752 psi | 86% | 2936 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 56,144 psi | 88% | 3045 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 57,145 psi | 90% | 3084 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,938 psi | 81% | 3097 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 55,114 psi | 86% | 2900 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,680 psi | 87% | 2923 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 57,740 psi | 90% | 3012 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,216 psi | 87% | 2982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,143 psi | 86% | 3009 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,579 psi | 89% | 3094 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 84% | 54,694 psi | 86% | 3005 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,753 psi | 89% | 3025 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,666 psi | 87% | 3097 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,208 psi | 69% | 2966 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,898 psi | 89% | 3068 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,795 psi | 86% | 3058 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,317 psi | 85% | 3104 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,056 psi | 56% | 2877 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 88% | 57,334 psi | 90% | 3091 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% | 49,559 psi | 78% | 2858 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,322 psi | 66% | 2776 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,516 psi | 78% | 2936 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 50,575 psi | 79% | 2910 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 40,030 psi | 63% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 36,143 psi | 57% | 2743 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 45,730 psi | 72% | 2887 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 38,914 psi | 61% | 2726 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,790 psi | 75% | 2897 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 48,269 psi | 76% | 2884 fps | 100% |
| Alliant Power Pro 2000-MR | 58.7 gr | 80% | 41,698 psi | 65% | 2917 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,551 psi | 60% | 2749 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,408 psi | 65% | 2818 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 36,187 psi | 57% | 2756 fps | 95.6% |
| Alliant Reloder-17 | 57.8 gr | 80% | 33,373 psi | 52% | 2707 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,386 psi | 49% | 2648 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 39,204 psi | 61% | 2913 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,034 psi | 71% | 2890 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 38,305 psi | 60% | 2753 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 47,282 psi | 74% | 2887 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,530 psi | 78% | 2887 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,847 psi | 73% | 2920 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,880 psi | 81% | 3077 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 80% | 39,131 psi | 61% | 2756 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 90% | 44,324 psi | 69% | 2920 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 92% | 51,503 psi | 81% | 3009 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 46,137 psi | 72% | 2900 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 31,241 psi | 49% | 2589 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,322 psi | 66% | 2867 fps | 99.2% |
| Hodgdon Superformance | 70.3 gr | 92% | 47,601 psi | 75% | 3005 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,513 psi | 42% | 1690 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,222 psi | 69% | 2844 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 45,832 psi | 72% | 2894 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,814 psi | 64% | 2762 fps | 97.7% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,064 psi | 72% | 2841 fps | 95.4% |
| IMR 4350 | <<locked>> | 94% | 47,645 psi | 75% | 2920 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 46,224 psi | 72% | 2871 fps | 95.4% |
| IMR 4831 | <<locked>> | 86% | 35,099 psi | 55% | 2697 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 42,409 psi | 66% | 2851 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 47,790 psi | 75% | 2897 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 45,078 psi | 71% | 2867 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,585 psi | 71% | 2822 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 40,785 psi | 64% | 2769 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 40,335 psi | 63% | 2756 fps | 95.3% |
| Lovex S070 | <<locked>> | 90% | 43,526 psi | 68% | 2841 fps | 95% |
| Norma 201 | <<locked>> | 80% | 44,759 psi | 70% | 2838 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 45,121 psi | 71% | 2848 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,770 psi | 64% | 2805 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 36,419 psi | 57% | 2746 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 40,422 psi | 63% | 2815 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 43,265 psi | 68% | 2904 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 47,732 psi | 75% | 2900 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,413 psi | 74% | 2923 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,503 psi | 81% | 2946 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,745 psi | 42% | 1726 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,577 psi | 84% | 2986 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,279 psi | 66% | 2799 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,743 psi | 69% | 2927 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,505 psi | 56% | 2782 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 36,027 psi | 56% | 2759 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 38,595 psi | 60% | 2828 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 48,675 psi | 76% | 2884 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,569 psi | 67% | 2785 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 36,027 psi | 56% | 2694 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 47,282 psi | 74% | 2887 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 40,335 psi | 63% | 2756 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,078 psi | 71% | 2867 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,785 psi | 64% | 2769 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 90% | 43,526 psi | 68% | 2841 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,985 psi | 58% | 2743 fps | 97.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,093 psi | 72% | 2874 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,251 psi | 69% | 2851 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,006 psi | 72% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,392 psi | 60% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 45,426 psi | 71% | 2812 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 51,866 psi | 81% | 2982 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,687 psi | 72% | 2789 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,861 psi | 72% | 2871 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 36,811 psi | 58% | 2700 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 28,616 psi | 45% | 2572 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 51,880 psi | 81% | 2854 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,340 psi | 73% | 2782 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,134 psi | 66% | 2769 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,714 psi | 67% | 2776 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,056 psi | 55% | 2635 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 35,679 psi | 56% | 2690 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 47,950 psi | 75% | 2894 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 41,220 psi | 65% | 2762 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 37,449 psi | 59% | 2746 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 92% | 33,823 psi | 53% | 2730 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,096 psi | 49% | 2546 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 47,834 psi | 75% | 2943 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 44,541 psi | 70% | 2923 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 96% | 31,705 psi | 50% | 2736 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,787 psi | 69% | 2858 fps | 99.1% |
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 95 powders for .300 WSM loaded with the .308 | 150gr | Nosler. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,209 fps. Alliant Reloder-16 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, Alliant Reloder-23, Alliant Reloder-26 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 150gr | Nosler 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.