Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 167gr | MRR Green Hunting 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 70, 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 2495 | <<locked>> | 84% | 54,331 psi | 87% | 2825 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,172 psi | 87% | 2851 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,356 psi | 79% | 2864 fps | 98.7% |
| Accurate 4064 | <<locked>> | 86% | 54,665 psi | 88% | 2881 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,622 psi | 89% | 2986 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 54,476 psi | 87% | 2913 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,825 psi | 90% | 2920 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,388 psi | 86% | 2969 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,781 psi | 88% | 3041 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,359 psi | 86% | 2966 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,231 psi | 90% | 2940 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 52,953 psi | 85% | 2907 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,011 psi | 85% | 2989 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,230 psi | 87% | 3018 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,014 psi | 90% | 3012 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,458 psi | 79% | 2946 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,702 psi | 75% | 2890 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,799 psi | 65% | 2799 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,548 psi | 86% | 3084 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,418 psi | 87% | 2930 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 53,359 psi | 86% | 2904 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,458 psi | 79% | 2946 fps | 96.7% |
| Bofors RP7 | <<locked>> | 90% | 53,142 psi | 85% | 2884 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 86% | 53,838 psi | 86% | 2917 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 55,782 psi | 89% | 3002 fps | 99% |
| Hodgdon H4350 | <<locked>> | 94% | 56,289 psi | 90% | 2969 fps | 98% |
| Hodgdon H4895 | <<locked>> | 82% | 55,100 psi | 88% | 2923 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,272 psi | 85% | 2913 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,361 psi | 89% | 2963 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,752 psi | 88% | 3018 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,042 psi | 58% | 1821 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,172 psi | 88% | 2910 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,128 psi | 87% | 2881 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,520 psi | 87% | 2890 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,534 psi | 86% | 2864 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 53,940 psi | 86% | 2913 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,926 psi | 88% | 2913 fps | 98.7% |
| IMR 4831 | <<locked>> | 98% | 53,403 psi | 86% | 2936 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 54,360 psi | 87% | 2936 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,549 psi | 87% | 2884 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,635 psi | 86% | 2838 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,129 psi | 88% | 2894 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,665 psi | 88% | 2907 fps | 99.5% |
| Lovex S070 | <<locked>> | 94% | 55,695 psi | 89% | 2946 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,843 psi | 65% | 2707 fps | 96.9% |
| Norma 201 | <<locked>> | 82% | 53,069 psi | 85% | 2854 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,780 psi | 86% | 2854 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,825 psi | 90% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,636 psi | 88% | 2966 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 52,562 psi | 84% | 3035 fps | 98.6% |
| Norma URP | <<locked>> | 94% | 54,360 psi | 87% | 2969 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 52,953 psi | 85% | 2920 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,275 psi | 90% | 3064 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 94% | 53,272 psi | 85% | 2969 fps | 99.2% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,515 psi | 78% | 2904 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,680 psi | 59% | 1864 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,070 psi | 87% | 2900 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,751 psi | 86% | 2976 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,867 psi | 86% | 3015 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,651 psi | 89% | 3012 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,259 psi | 87% | 3035 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 53,577 psi | 86% | 2854 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,258 psi | 85% | 2894 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,201 psi | 89% | 2940 fps | 96.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,216 psi | 89% | 2995 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 53,142 psi | 85% | 2884 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,665 psi | 88% | 2907 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,549 psi | 87% | 2884 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,129 psi | 88% | 2894 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,695 psi | 89% | 2946 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,143 psi | 88% | 2959 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,550 psi | 89% | 2913 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 52,895 psi | 85% | 2881 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,070 psi | 87% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,100 psi | 88% | 2795 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,534 psi | 87% | 2861 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,723 psi | 88% | 2992 fps | 97.7% |
| Somchem S335 | <<locked>> | 82% | 53,809 psi | 86% | 2785 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,361 psi | 89% | 2904 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,374 psi | 86% | 2894 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 53,447 psi | 86% | 2972 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,767 psi | 89% | 2972 fps | 98.5% |
| Unknown powder | <<locked>> | 92% | 55,187 psi | 88% | 2976 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 84% | 54,114 psi | 87% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,882 psi | 86% | 2815 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,592 psi | 86% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,984 psi | 88% | 2877 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,724 psi | 89% | 2946 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,499 psi | 75% | 2802 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 84% | 53,345 psi | 86% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,086 psi | 90% | 2995 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,054 psi | 83% | 2966 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 52,895 psi | 85% | 2881 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,782 psi | 89% | 3002 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,872 psi | 67% | 2927 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,549 psi | 87% | 2940 fps | 97.4% |
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% | 47,659 psi | 76% | 2730 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,423 psi | 66% | 2618 fps | 95.1% |
| Accurate 3100 | <<locked>> | 92% | 37,246 psi | 60% | 2628 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 45,136 psi | 72% | 2730 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,808 psi | 54% | 2566 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 80% | 51,010 psi | 82% | 2858 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,294 psi | 69% | 2703 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 46,731 psi | 75% | 2844 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,456 psi | 76% | 2913 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,746 psi | 75% | 2844 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,511 psi | 70% | 2730 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,514 psi | 75% | 2795 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,678 psi | 54% | 2585 fps | 96.6% |
| Alliant Reloder-17 | 61 gr | 80% | 38,058 psi | 61% | 2717 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,151 psi | 74% | 2838 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,340 psi | 74% | 2887 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,644 psi | 44% | 2434 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,810 psi | 57% | 2674 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,171 psi | 55% | 2677 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,734 psi | 81% | 2871 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 43,308 psi | 69% | 2733 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 46,340 psi | 74% | 2887 fps | 95.8% |
| Bofors RP7 | <<locked>> | 82% | 41,147 psi | 66% | 2654 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 44,077 psi | 71% | 2743 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 80% | 39,450 psi | 63% | 2694 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 43,700 psi | 70% | 2743 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 51,547 psi | 83% | 2867 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,024 psi | 50% | 2477 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,339 psi | 73% | 2799 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 40,828 psi | 65% | 2756 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 43% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,716 psi | 73% | 2749 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 47,630 psi | 76% | 2782 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,511 psi | 68% | 2680 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,989 psi | 67% | 2651 fps | 96.1% |
| IMR 4350 | <<locked>> | 86% | 41,713 psi | 67% | 2690 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,059 psi | 64% | 2635 fps | 95.4% |
| IMR 4831 | <<locked>> | 82% | 31,662 psi | 51% | 2497 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 47,703 psi | 76% | 2828 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 50,981 psi | 82% | 2831 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,241 psi | 81% | 2785 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,484 psi | 73% | 2736 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,492 psi | 60% | 2579 fps | 96.2% |
| Lovex S070 | <<locked>> | 82% | 37,956 psi | 61% | 2608 fps | 95.1% |
| Lovex S071 | <<locked>> | 96% | 35,839 psi | 57% | 2595 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 49,864 psi | 80% | 2802 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,531 psi | 81% | 2805 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,861 psi | 74% | 2782 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 47,529 psi | 76% | 2841 fps | 95.7% |
| Norma MRP | <<locked>> | 92% | 39,566 psi | 63% | 2772 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 34,084 psi | 55% | 2569 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 80% | 46,079 psi | 74% | 2805 fps | 99.8% |
| Ramshot Grand | <<locked>> | 98% | 51,982 psi | 83% | 2992 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 84% | 37,927 psi | 61% | 2671 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 98% | 44,802 psi | 72% | 2835 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 44% | 1667 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,338 psi | 71% | 2730 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,111 psi | 80% | 2913 fps | 99.9% |
| ReloadSwiss RS 60 | 61 gr | 80% | 40,509 psi | 65% | 2779 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,692 psi | 54% | 2585 fps | 96% |
| ReloadSwiss RS 70 | 61.9 gr | 80% | 33,185 psi | 53% | 2585 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 47,268 psi | 76% | 2753 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,857 psi | 66% | 2677 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 51,822 psi | 83% | 2884 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 94% | 45,107 psi | 72% | 2818 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 82% | 41,147 psi | 66% | 2654 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,492 psi | 60% | 2579 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,981 psi | 82% | 2831 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,484 psi | 73% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 37,956 psi | 61% | 2608 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,090 psi | 67% | 2733 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,692 psi | 83% | 2854 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,545 psi | 79% | 2828 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,966 psi | 82% | 2743 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,830 psi | 69% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,160 psi | 63% | 2579 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,686 psi | 72% | 2812 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 50,604 psi | 81% | 2740 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,576 psi | 83% | 2848 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,452 psi | 66% | 2680 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 30,516 psi | 49% | 2520 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 42,772 psi | 69% | 2743 fps | 95.8% |
| Unknown powder | <<locked>> | 80% | 36,912 psi | 59% | 2628 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 80% | 48,124 psi | 77% | 2680 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,558 psi | 76% | 2723 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,268 psi | 76% | 2726 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,302 psi | 57% | 2523 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 36,956 psi | 59% | 2602 fps | 97.3% |
| Vihtavuori N165 | <<locked>> | 98% | 43,352 psi | 70% | 2743 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 46,731 psi | 75% | 2746 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,507 psi | 60% | 2644 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 84% | 30,168 psi | 48% | 2510 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,853 psi | 56% | 2546 fps | 98.7% |
| Winchester 760 | <<locked>> | 80% | 39,450 psi | 63% | 2694 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,775 psi | 45% | 2520 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 94% | 46,992 psi | 75% | 2812 fps | 95.7% |
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 96 powders for .300 Win. Mag. loaded with the .308 | 167gr | MRR Green Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 3,084 fps; across all powders the maximum-charge window runs from 1,821 fps to 3,084 fps. Accurate 3100 gives the best case fill at 100 %, and 96 of the 96 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 167.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-19, Alliant Reloder-22 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 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 Win. Mag. with the .308 | 167gr | MRR Green Hunting 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.