Load Specifications
Load data in caliber .300 WSM with .308 | 165gr | Barnes X FN bullet and 96 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-16.
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 2495 | <<locked>> | 84% | 56,202 psi | 88% | 2822 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 57,537 psi | 90% | 2867 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,545 psi | 78% | 2841 fps | 98.1% |
| Accurate 4064 | <<locked>> | 86% | 56,115 psi | 88% | 2874 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,216 psi | 87% | 2956 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 57,696 psi | 90% | 2936 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,998 psi | 86% | 2884 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,767 psi | 87% | 2979 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,217 psi | 88% | 2881 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,363 psi | 90% | 3061 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,753 psi | 87% | 2910 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,086 psi | 88% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,288 psi | 87% | 3005 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,579 psi | 89% | 3038 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,911 psi | 86% | 2969 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,137 psi | 72% | 2861 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,799 psi | 64% | 2766 fps | 96.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,054 psi | 82% | 3041 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,334 psi | 90% | 2949 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 56,942 psi | 89% | 2933 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 56,144 psi | 88% | 2900 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,595 psi | 90% | 2858 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,202 psi | 88% | 2913 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,377 psi | 90% | 2946 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 90% | 54,839 psi | 86% | 2963 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 94% | 55,201 psi | 87% | 2923 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 82% | 54,795 psi | 86% | 2894 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,651 psi | 87% | 2930 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,650 psi | 86% | 2930 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 57,246 psi | 90% | 3035 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,390 psi | 57% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,549 psi | 85% | 2877 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 57,130 psi | 90% | 2904 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,392 psi | 90% | 2910 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,449 psi | 88% | 2881 fps | 98.4% |
| IMR 4350 | <<locked>> | 96% | 56,376 psi | 88% | 2927 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,493 psi | 90% | 2927 fps | 98.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,043 psi | 88% | 2953 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 57,537 psi | 90% | 2963 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,217 psi | 88% | 2881 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,723 psi | 86% | 2864 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,318 psi | 88% | 2854 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,317 psi | 87% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,638 psi | 90% | 2927 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 55,535 psi | 87% | 2913 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,626 psi | 65% | 2697 fps | 96.4% |
| Norma 201 | <<locked>> | 84% | 56,956 psi | 89% | 2884 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,217 psi | 90% | 2881 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,405 psi | 87% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,159 psi | 90% | 2979 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 51,488 psi | 81% | 2992 fps | 97.7% |
| Norma URP | <<locked>> | 96% | 57,203 psi | 90% | 2989 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 55,782 psi | 87% | 2943 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,767 psi | 87% | 2986 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 56,521 psi | 89% | 2904 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,260 psi | 88% | 2920 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,970 psi | 58% | 1837 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,217 psi | 90% | 2923 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,695 psi | 89% | 2999 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,202 psi | 88% | 3031 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,389 psi | 85% | 2972 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,869 psi | 89% | 3054 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 86% | 57,305 psi | 90% | 2881 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,014 psi | 89% | 2927 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 2949 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,838 psi | 84% | 2949 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 92% | 56,144 psi | 88% | 2900 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,638 psi | 90% | 2927 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,723 psi | 86% | 2864 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,317 psi | 87% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,535 psi | 87% | 2913 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,317 psi | 85% | 2927 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,608 psi | 87% | 2887 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,898 psi | 88% | 2904 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,479 psi | 90% | 2812 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,665 psi | 86% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,360 psi | 85% | 2825 fps | 98.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,316 psi | 84% | 2943 fps | 96.6% |
| Somchem S335 | <<locked>> | 84% | 57,334 psi | 90% | 2812 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,679 psi | 86% | 2871 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,782 psi | 89% | 2920 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,782 psi | 87% | 2995 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,056 psi | 86% | 2933 fps | 97.7% |
| Unknown powder | <<locked>> | 92% | 54,375 psi | 85% | 2940 fps | 99.4% |
| Vihtavuori N133 | <<locked>> | 86% | 57,101 psi | 89% | 2789 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,363 psi | 90% | 2844 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,782 psi | 89% | 2848 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,636 psi | 86% | 2851 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,708 psi | 86% | 2910 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 86% | 56,623 psi | 89% | 2877 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,347 psi | 87% | 2959 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,401 psi | 81% | 2940 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,347 psi | 87% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,839 psi | 86% | 2963 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,930 psi | 66% | 2900 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,971 psi | 89% | 2949 fps | 97% |
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 2495 | <<locked>> | 80% | 49,647 psi | 78% | 2730 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 44,788 psi | 70% | 2651 fps | 95.2% |
| Accurate 3100 | <<locked>> | 92% | 38,493 psi | 60% | 2628 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 46,934 psi | 74% | 2733 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,346 psi | 55% | 2575 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 80% | 51,227 psi | 80% | 2835 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,540 psi | 68% | 2680 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 49,269 psi | 77% | 2864 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,026 psi | 83% | 2831 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,992 psi | 74% | 2881 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,990 psi | 69% | 2713 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,963 psi | 74% | 2776 fps | 99.4% |
| Alliant Reloder-16 | 52.5 gr | 80% | 34,461 psi | 54% | 2572 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,348 psi | 60% | 2697 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 48,675 psi | 76% | 2858 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,124 psi | 46% | 2448 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 98% | 38,580 psi | 60% | 2710 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,983 psi | 55% | 2667 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,459 psi | 79% | 2841 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 44,541 psi | 70% | 2726 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 44,367 psi | 70% | 2687 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,404 psi | 85% | 2812 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,823 psi | 83% | 2864 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,831 psi | 70% | 2730 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 82% | 42,337 psi | 66% | 2733 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 46,412 psi | 73% | 2766 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 51,721 psi | 81% | 2844 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,097 psi | 50% | 2477 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,382 psi | 71% | 2776 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 43,613 psi | 68% | 2785 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 43% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,788 psi | 72% | 2726 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 47,935 psi | 75% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,975 psi | 67% | 2661 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,380 psi | 66% | 2625 fps | 95.4% |
| IMR 4350 | <<locked>> | 88% | 44,585 psi | 70% | 2720 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,018 psi | 67% | 2664 fps | 95.5% |
| IMR 4831 | <<locked>> | 82% | 32,982 psi | 52% | 2500 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 48,066 psi | 75% | 2805 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 53,026 psi | 83% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,401 psi | 81% | 2815 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,212 psi | 79% | 2756 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,296 psi | 73% | 2723 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,537 psi | 60% | 2572 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 41,539 psi | 65% | 2657 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 39,189 psi | 61% | 2644 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 50,502 psi | 79% | 2782 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,633 psi | 79% | 2782 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,354 psi | 73% | 2766 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 50,198 psi | 79% | 2861 fps | 95.4% |
| Norma MRP | <<locked>> | 94% | 42,511 psi | 67% | 2812 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 34,940 psi | 55% | 2566 fps | 96% |
| Ramshot Big Game | <<locked>> | 80% | 45,948 psi | 72% | 2779 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 38,305 psi | 60% | 2651 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 52,997 psi | 83% | 2848 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,953 psi | 83% | 2867 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 44% | 1647 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,788 psi | 70% | 2707 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,777 psi | 78% | 2887 fps | 99.6% |
| ReloadSwiss RS 60 | 56.5 gr | 80% | 40,611 psi | 64% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,679 psi | 54% | 2582 fps | 95.6% |
| ReloadSwiss RS 70 | 58.8 gr | 82% | 36,172 psi | 57% | 2635 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 48,414 psi | 76% | 2740 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,989 psi | 66% | 2671 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 98% | 54,157 psi | 85% | 2894 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 96% | 47,645 psi | 75% | 2841 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 84% | 44,367 psi | 70% | 2687 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,537 psi | 60% | 2572 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,401 psi | 81% | 2815 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,296 psi | 73% | 2723 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 41,539 psi | 65% | 2657 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,221 psi | 66% | 2713 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,996 psi | 81% | 2828 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,414 psi | 77% | 2799 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,198 psi | 80% | 2720 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,236 psi | 68% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,699 psi | 67% | 2618 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 47,195 psi | 74% | 2835 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 50,966 psi | 80% | 2720 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,445 psi | 81% | 2818 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 42,308 psi | 66% | 2671 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 31,734 psi | 50% | 2526 fps | 98.3% |
| Somchem S385 | <<locked>> | 94% | 45,730 psi | 72% | 2772 fps | 95.7% |
| Unknown powder | <<locked>> | 80% | 37,492 psi | 59% | 2618 fps | 96.1% |
| Vihtavuori N133 | <<locked>> | 80% | 48,254 psi | 76% | 2661 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,095 psi | 75% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,398 psi | 74% | 2707 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,405 psi | 57% | 2520 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 80% | 37,550 psi | 59% | 2592 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 80% | 47,224 psi | 74% | 2733 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,348 psi | 60% | 2641 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 84% | 31,604 psi | 50% | 2526 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,563 psi | 56% | 2533 fps | 98.3% |
| Winchester 760 | <<locked>> | 82% | 42,337 psi | 66% | 2733 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 29,211 psi | 46% | 2530 fps | 96% |
| Winchester Supreme 780 | <<locked>> | 96% | 49,734 psi | 78% | 2835 fps | 95.4% |
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 111 powders for .300 WSM loaded with the .308 | 165gr | Barnes X FN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,798 fps to 3,061 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for .300 WSM with the .308 | 165gr | Barnes X FN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Bofors RP15, Hodgdon H4831 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.