Load Specifications
Load data in caliber .300 WSM with .308 | 150gr | Impala LWH CHP bullet and 96 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>> | 82% | 54,795 psi | 86% | 2900 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,752 psi | 86% | 2940 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,927 psi | 89% | 3025 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 56,681 psi | 89% | 2966 fps | 96.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,585 psi | 70% | 2864 fps | 95.9% |
| Accurate 4064 | <<locked>> | 88% | 54,607 psi | 86% | 2982 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,927 psi | 89% | 3107 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 56,695 psi | 89% | 3048 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 57,363 psi | 90% | 3041 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,564 psi | 87% | 2995 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,739 psi | 89% | 2976 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,144 psi | 88% | 3169 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,563 psi | 86% | 3018 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,172 psi | 86% | 3041 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 57,058 psi | 89% | 3153 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,984 psi | 86% | 3140 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,989 psi | 66% | 2887 fps | 98.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,949 psi | 74% | 3058 fps | 98% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,420 psi | 88% | 3061 fps | 99.5% |
| Bofors RP3 | <<locked>> | 90% | 55,796 psi | 87% | 3045 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,230 psi | 87% | 2995 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,290 psi | 90% | 2979 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,492 psi | 87% | 3031 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 56,884 psi | 89% | 3130 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 55,535 psi | 87% | 2982 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,246 psi | 88% | 3048 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 94% | 57,145 psi | 90% | 3120 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 98% | 57,363 psi | 90% | 3074 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 86% | 57,276 psi | 90% | 3058 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,679 psi | 84% | 3025 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,768 psi | 89% | 3094 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,941 psi | 88% | 3123 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,926 psi | 56% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,261 psi | 90% | 3045 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,043 psi | 88% | 3025 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,231 psi | 88% | 3015 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,579 psi | 87% | 2979 fps | 97.2% |
| IMR 4350 | <<locked>> | 98% | 55,216 psi | 87% | 3018 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,637 psi | 89% | 3025 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,981 psi | 80% | 2992 fps | 98.9% |
| IMR 4895 | <<locked>> | 88% | 56,521 psi | 89% | 3074 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 55,564 psi | 87% | 2995 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,203 psi | 90% | 3031 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,014 psi | 88% | 2969 fps | 99.8% |
| Lovex S062 | <<locked>> | 90% | 57,508 psi | 90% | 3031 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,594 psi | 89% | 3025 fps | 98.5% |
| Lovex S070 | <<locked>> | 98% | 57,638 psi | 90% | 3061 fps | 97.8% |
| Norma 201 | <<locked>> | 86% | 56,086 psi | 88% | 2999 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,217 psi | 88% | 2995 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,447 psi | 85% | 3028 fps | 99.8% |
| Norma URP | <<locked>> | 98% | 55,303 psi | 87% | 3087 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 88% | 54,578 psi | 86% | 3048 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 57,508 psi | 90% | 3133 fps | 98.5% |
| Ramshot TAC | <<locked>> | 84% | 55,869 psi | 88% | 3009 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,463 psi | 87% | 3031 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,536 psi | 89% | 2995 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,651 psi | 57% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,188 psi | 88% | 3022 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,317 psi | 87% | 3107 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,607 psi | 86% | 3140 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,057 psi | 88% | 3120 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,492 psi | 87% | 3146 fps | 99% |
| Rottweil R 901 | <<locked>> | 84% | 57,435 psi | 90% | 2986 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,652 psi | 89% | 2999 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,579 psi | 87% | 3031 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,230 psi | 87% | 2995 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,594 psi | 89% | 3025 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,203 psi | 90% | 3031 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,508 psi | 90% | 3031 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 57,638 psi | 90% | 3061 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 56,420 psi | 88% | 3084 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,766 psi | 86% | 2992 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,100 psi | 86% | 3015 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,869 psi | 89% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,014 psi | 89% | 2923 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,855 psi | 89% | 2976 fps | 97.4% |
| Somchem S321 | <<locked>> | 82% | 57,014 psi | 89% | 3031 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,579 psi | 89% | 2930 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 57,624 psi | 90% | 3035 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 55,593 psi | 87% | 3028 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,417 psi | 84% | 3094 fps | 100% |
| Unknown powder | <<locked>> | 96% | 56,260 psi | 88% | 3091 fps | 99% |
| Vihtavuori N130 | <<locked>> | 82% | 55,535 psi | 87% | 2877 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,420 psi | 88% | 2907 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,086 psi | 88% | 2959 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,738 psi | 87% | 2963 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,521 psi | 89% | 3002 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,884 psi | 89% | 3061 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 82% | 55,390 psi | 87% | 3005 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,579 psi | 87% | 2992 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 57,406 psi | 90% | 3117 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,296 psi | 73% | 2976 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,418 psi | 85% | 3002 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,565 psi | 89% | 3054 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,145 psi | 90% | 3120 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,927 psi | 59% | 2890 fps | 98.6% |
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% | 51,547 psi | 81% | 2851 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,687 psi | 72% | 2795 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,038 psi | 78% | 2920 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,053 psi | 78% | 2851 fps | 95.1% |
| Accurate 3100 | <<locked>> | 98% | 41,611 psi | 65% | 2805 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 43,105 psi | 68% | 2789 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 36,260 psi | 57% | 2710 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 47,340 psi | 74% | 2884 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 40,495 psi | 63% | 2726 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,226 psi | 77% | 2890 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 49,980 psi | 78% | 2881 fps | 100% |
| Alliant Power Pro 2000-MR | 56.7 gr | 80% | 43,192 psi | 68% | 2917 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,582 psi | 64% | 2759 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,250 psi | 68% | 2822 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,781 psi | 56% | 2707 fps | 95% |
| Alliant Reloder-17 | 55.9 gr | 80% | 35,288 psi | 55% | 2726 fps | 96.8% |
| Alliant Reloder-23 | <<locked>> | 92% | 33,344 psi | 52% | 2671 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 38,551 psi | 60% | 2861 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,557 psi | 73% | 2887 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 40,669 psi | 64% | 2769 fps | 98.7% |
| Bofors RP7 | <<locked>> | 90% | 49,110 psi | 77% | 2887 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,792 psi | 80% | 2877 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,602 psi | 76% | 2917 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,330 psi | 84% | 3071 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 80% | 52,272 psi | 82% | 2930 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,162 psi | 65% | 2762 fps | 96.2% |
| Hodgdon H414 | <<locked>> | 88% | 46,818 psi | 73% | 2936 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 96% | 54,070 psi | 85% | 3018 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 47,834 psi | 75% | 2897 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 31,285 psi | 49% | 2552 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,408 psi | 65% | 2818 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 92% | 48,936 psi | 77% | 2995 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 42% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,569 psi | 67% | 2779 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 43,990 psi | 69% | 2828 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,871 psi | 62% | 2707 fps | 97.3% |
| IMR 4166 Enduron | <<locked>> | 86% | 46,934 psi | 74% | 2822 fps | 95.3% |
| IMR 4350 | <<locked>> | 94% | 48,950 psi | 77% | 2910 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 47,601 psi | 75% | 2864 fps | 95.4% |
| IMR 4831 | <<locked>> | 88% | 35,781 psi | 56% | 2680 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 44,237 psi | 69% | 2851 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 49,226 psi | 77% | 2890 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 47,355 psi | 74% | 2874 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,050 psi | 74% | 2815 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 42,902 psi | 67% | 2776 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 42,438 psi | 67% | 2766 fps | 95.6% |
| Lovex S070 | <<locked>> | 90% | 45,658 psi | 72% | 2848 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 47,036 psi | 74% | 2844 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 47,021 psi | 74% | 2848 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,641 psi | 67% | 2808 fps | 98.3% |
| Norma URP | <<locked>> | 84% | 36,027 psi | 56% | 2700 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 42,076 psi | 66% | 2818 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 42,337 psi | 66% | 2848 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 49,269 psi | 77% | 2894 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,921 psi | 77% | 2920 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,910 psi | 83% | 2936 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,427 psi | 43% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,990 psi | 69% | 2799 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,513 psi | 71% | 2930 fps | 98.4% |
| ReloadSwiss RS 60 | 55.9 gr | 80% | 37,347 psi | 59% | 2795 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 37,985 psi | 60% | 2772 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 40,219 psi | 63% | 2831 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 51,372 psi | 81% | 2887 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,802 psi | 70% | 2792 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 38,537 psi | 60% | 2713 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 49,110 psi | 77% | 2887 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 42,438 psi | 67% | 2766 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,355 psi | 74% | 2874 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,902 psi | 67% | 2776 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 45,658 psi | 72% | 2848 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,754 psi | 61% | 2753 fps | 97.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,993 psi | 75% | 2874 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,861 psi | 72% | 2851 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,848 psi | 75% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,176 psi | 63% | 2648 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 47,282 psi | 74% | 2812 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 53,563 psi | 84% | 2976 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,659 psi | 75% | 2789 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,442 psi | 74% | 2867 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 39,015 psi | 61% | 2713 fps | 97.9% |
| Somchem S365 | <<locked>> | 80% | 29,008 psi | 45% | 2546 fps | 95.7% |
| Unknown powder | <<locked>> | 84% | 38,812 psi | 61% | 2756 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 52,547 psi | 82% | 2835 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,933 psi | 70% | 2730 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,338 psi | 69% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,903 psi | 69% | 2769 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,489 psi | 52% | 2562 fps | 97.7% |
| Vihtavuori N160 | <<locked>> | 82% | 36,564 psi | 57% | 2674 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 51,880 psi | 81% | 2946 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,642 psi | 68% | 2789 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 37,275 psi | 58% | 2723 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 33,997 psi | 53% | 2700 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,866 psi | 52% | 2559 fps | 96.1% |
| Winchester 748 | <<locked>> | 80% | 53,040 psi | 83% | 2999 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 46,818 psi | 73% | 2936 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 94% | 31,734 psi | 50% | 2697 fps | 95.5% |
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 114 powders for .300 WSM loaded with the .308 | 150gr | Impala LWH CHP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,169 fps. Accurate 3100 gives the best case fill at 100 %, and 114 of the 114 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. Accurate 3100, ADI AR 2209, Alliant Reloder-16 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 WSM with the .308 | 150gr | Impala LWH CHP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.