Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 155gr | Lapua Scenar 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-16 and Hodgdon Superformance.
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% | 53,563 psi | 86% | 2913 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,274 psi | 89% | 2966 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,979 psi | 77% | 2927 fps | 97.9% |
| Accurate 4064 | <<locked>> | 86% | 53,722 psi | 86% | 2963 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,896 psi | 86% | 3054 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 53,098 psi | 85% | 2989 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,273 psi | 87% | 2992 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,332 psi | 89% | 3087 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,288 psi | 89% | 2989 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,055 psi | 85% | 3114 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,172 psi | 88% | 3087 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,853 psi | 88% | 3018 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,216 psi | 89% | 3041 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,694 psi | 88% | 3114 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,086 psi | 90% | 3150 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,346 psi | 87% | 3077 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,136 psi | 72% | 2953 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,639 psi | 64% | 2848 fps | 96.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,488 psi | 83% | 3146 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,982 psi | 85% | 3002 fps | 99.7% |
| Bofors RP3 | <<locked>> | 88% | 55,506 psi | 89% | 3035 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,230 psi | 89% | 3009 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,100 psi | 88% | 3018 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,130 psi | 90% | 3048 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 56,434 psi | 90% | 3107 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 90% | 53,040 psi | 85% | 3009 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 82% | 53,708 psi | 86% | 2999 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,940 psi | 88% | 3038 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,548 psi | 86% | 3035 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,026 psi | 85% | 3084 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,027 psi | 58% | 1886 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,868 psi | 88% | 3005 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,085 psi | 87% | 2986 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,766 psi | 86% | 2976 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,301 psi | 85% | 2953 fps | 97.9% |
| IMR 4350 | <<locked>> | 96% | 55,898 psi | 90% | 3038 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,606 psi | 86% | 2982 fps | 97.9% |
| IMR 4831 | <<locked>> | 96% | 54,389 psi | 87% | 3045 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 53,069 psi | 85% | 3015 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,288 psi | 89% | 2989 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,374 psi | 86% | 2966 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,593 psi | 89% | 2966 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,751 psi | 86% | 2969 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,417 psi | 86% | 2979 fps | 98.9% |
| Lovex S070 | <<locked>> | 94% | 54,534 psi | 87% | 3018 fps | 98.3% |
| Norma 201 | <<locked>> | 84% | 55,463 psi | 89% | 2989 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,014 psi | 90% | 2986 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,505 psi | 87% | 3028 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,040 psi | 85% | 3028 fps | 96.1% |
| Norma MRPᴾ | <<locked>> | 100% | 50,807 psi | 81% | 3094 fps | 97.6% |
| Norma URP | <<locked>> | 96% | 56,347 psi | 90% | 3097 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 55,201 psi | 89% | 3051 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,303 psi | 89% | 3094 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 55,506 psi | 89% | 3009 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,390 psi | 89% | 3028 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,463 psi | 58% | 1929 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,246 psi | 90% | 3028 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,898 psi | 90% | 3110 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,695 psi | 89% | 3143 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,708 psi | 86% | 3077 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,634 psi | 84% | 3104 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 82% | 56,130 psi | 90% | 2966 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,956 psi | 90% | 2986 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,593 psi | 89% | 3028 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,301 psi | 85% | 3058 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 92% | 55,230 psi | 89% | 3009 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,417 psi | 86% | 2979 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,374 psi | 86% | 2966 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,751 psi | 86% | 2969 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,534 psi | 87% | 3018 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,519 psi | 86% | 3031 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,259 psi | 87% | 2989 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,100 psi | 88% | 3015 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,275 psi | 90% | 2917 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,621 psi | 86% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,258 psi | 85% | 2927 fps | 97.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,808 psi | 85% | 3051 fps | 96.5% |
| Somchem S335 | <<locked>> | 84% | 56,115 psi | 90% | 2917 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,954 psi | 87% | 2979 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,463 psi | 89% | 3022 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,940 psi | 88% | 3097 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,157 psi | 87% | 3035 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 82% | 53,577 psi | 86% | 2858 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,941 psi | 90% | 2946 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,084 psi | 85% | 2913 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,563 psi | 86% | 2949 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,085 psi | 88% | 3035 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 55,883 psi | 90% | 2989 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,737 psi | 88% | 2956 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,186 psi | 87% | 3041 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,473 psi | 81% | 3038 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,940 psi | 88% | 3005 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,231 psi | 90% | 3038 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,084 psi | 85% | 3054 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,683 psi | 65% | 2982 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,085 psi | 88% | 3018 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 2495 | <<locked>> | 80% | 46,920 psi | 75% | 2812 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,295 psi | 73% | 2789 fps | 95.3% |
| Accurate 3100 | <<locked>> | 94% | 39,001 psi | 63% | 2749 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 44,382 psi | 71% | 2808 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,243 psi | 53% | 2631 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 50,009 psi | 80% | 2936 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 42,322 psi | 68% | 2772 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 96% | 48,544 psi | 78% | 2966 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,069 psi | 83% | 2936 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,122 psi | 74% | 2982 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 48,530 psi | 78% | 2966 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,467 psi | 68% | 2799 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,571 psi | 73% | 2871 fps | 99.2% |
| Alliant Reloder-16 | 57 gr | 80% | 32,924 psi | 53% | 2638 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,985 psi | 59% | 2776 fps | 98.5% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,877 psi | 77% | 2956 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,993 psi | 46% | 2546 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,159 psi | 60% | 2782 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,795 psi | 57% | 2799 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,487 psi | 79% | 2940 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 42,525 psi | 68% | 2808 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 45,774 psi | 73% | 2835 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,634 psi | 83% | 2966 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,033 psi | 69% | 2808 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 43,236 psi | 69% | 2864 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 86% | 46,557 psi | 75% | 2887 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 50,517 psi | 81% | 2946 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,516 psi | 49% | 2539 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,862 psi | 75% | 2920 fps | 99.9% |
| Hodgdon Superformance | 71.4 gr | 88% | 45,774 psi | 73% | 2943 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 43% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,327 psi | 77% | 2894 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 50,691 psi | 81% | 2930 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,483 psi | 71% | 2808 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,862 psi | 75% | 2835 fps | 96.6% |
| IMR 4350 | <<locked>> | 88% | 43,511 psi | 70% | 2808 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,785 psi | 67% | 2753 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 34,287 psi | 55% | 2641 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 46,731 psi | 75% | 2900 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 52,069 psi | 83% | 2936 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,690 psi | 80% | 2907 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,356 psi | 79% | 2861 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 44,744 psi | 72% | 2815 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,811 psi | 59% | 2644 fps | 95% |
| Lovex S070 | <<locked>> | 86% | 42,409 psi | 68% | 2789 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 48,863 psi | 78% | 2881 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,342 psi | 79% | 2884 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,947 psi | 72% | 2858 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 49,385 psi | 79% | 2963 fps | 95.2% |
| Norma MRP | <<locked>> | 96% | 44,121 psi | 71% | 2959 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 33,257 psi | 53% | 2628 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 44,889 psi | 72% | 2874 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 39,552 psi | 63% | 2789 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 51,924 psi | 83% | 2949 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,982 psi | 83% | 2972 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,224 psi | 44% | 1726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,265 psi | 69% | 2792 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,776 psi | 78% | 2989 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,349 psi | 63% | 2844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 35,273 psi | 57% | 2703 fps | 95.7% |
| ReloadSwiss RS 70 | 65.5 gr | 84% | 37,275 psi | 60% | 2772 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 52,823 psi | 85% | 2913 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,572 psi | 75% | 2831 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 40,001 psi | 64% | 2746 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 96% | 46,615 psi | 75% | 2936 fps | 95% |
| Rottweil R 907 | <<locked>> | 86% | 45,774 psi | 73% | 2835 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,811 psi | 59% | 2644 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,690 psi | 80% | 2907 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,744 psi | 72% | 2815 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 42,409 psi | 68% | 2789 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,104 psi | 66% | 2802 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,589 psi | 81% | 2927 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,457 psi | 78% | 2900 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,922 psi | 80% | 2822 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,916 psi | 67% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,031 psi | 66% | 2697 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,472 psi | 79% | 2992 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 49,574 psi | 79% | 2818 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,343 psi | 81% | 2920 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 40,611 psi | 65% | 2753 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 29,863 psi | 48% | 2579 fps | 97.4% |
| Somchem S385 | <<locked>> | 94% | 44,527 psi | 71% | 2861 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 50,357 psi | 81% | 2808 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,456 psi | 74% | 2802 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,746 psi | 75% | 2812 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,638 psi | 62% | 2680 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 34,722 psi | 56% | 2635 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 52,315 psi | 84% | 2933 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,107 psi | 72% | 2799 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,156 psi | 55% | 2631 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 86% | 31,560 psi | 51% | 2628 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,156 psi | 55% | 2605 fps | 97.8% |
| Winchester 748 | <<locked>> | 80% | 52,634 psi | 84% | 2982 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 43,424 psi | 70% | 2867 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 29,153 psi | 47% | 2631 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,109 psi | 77% | 2904 fps | 99.9% |
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 | 155gr | Lapua Scenar. Alliant Reloder-17 delivers the highest muzzle velocity at 3,150 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,150 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 155.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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-16, Hodgdon Superformance rank at the top here: for .300 Win. Mag. with the .308 | 155gr | Lapua Scenar 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.