Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 168gr | Reichenberg HDB Universal bullet and 97 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 Alliant Reloder-26.
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% | 55,492 psi | 89% | 2838 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,230 psi | 89% | 2864 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,705 psi | 81% | 2881 fps | 99% |
| Accurate 4064 | <<locked>> | 86% | 55,811 psi | 89% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,055 psi | 85% | 2943 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 55,274 psi | 89% | 2923 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,214 psi | 85% | 2877 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,433 psi | 87% | 2986 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,854 psi | 90% | 3054 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,462 psi | 87% | 2982 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,621 psi | 86% | 2897 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,998 psi | 87% | 2920 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,259 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,535 psi | 89% | 3031 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,650 psi | 86% | 2972 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,734 psi | 81% | 2966 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,805 psi | 77% | 2907 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,669 psi | 67% | 2815 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,969 psi | 88% | 3104 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,347 psi | 89% | 2940 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 54,418 psi | 87% | 2917 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,734 psi | 81% | 2966 fps | 97.1% |
| Bofors RP7 | <<locked>> | 90% | 54,012 psi | 87% | 2894 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 86% | 55,042 psi | 88% | 2933 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 53,287 psi | 85% | 2959 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 92% | 53,838 psi | 86% | 2930 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 82% | 55,898 psi | 90% | 2933 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,259 psi | 87% | 2923 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,026 psi | 85% | 2923 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,115 psi | 90% | 3038 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,027 psi | 58% | 1821 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,188 psi | 90% | 2920 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,332 psi | 89% | 2890 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,550 psi | 89% | 2904 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 54,389 psi | 87% | 2877 fps | 98.8% |
| IMR 4350 | <<locked>> | 94% | 54,984 psi | 88% | 2930 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,767 psi | 89% | 2927 fps | 98.9% |
| IMR 4831 | <<locked>> | 98% | 54,563 psi | 87% | 2949 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,376 psi | 89% | 2949 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,027 psi | 87% | 2910 fps | 95.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,563 psi | 86% | 3012 fps | 96.2% |
| Lovex D073.6 | <<locked>> | 82% | 55,651 psi | 89% | 2894 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,360 psi | 87% | 2848 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,159 psi | 90% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,579 psi | 89% | 2920 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 53,519 psi | 86% | 2910 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,916 psi | 67% | 2723 fps | 97.4% |
| Norma 201 | <<locked>> | 82% | 53,882 psi | 86% | 2864 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,607 psi | 88% | 2861 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,243 psi | 85% | 2907 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,724 psi | 89% | 2982 fps | 97.7% |
| Norma MRPᴾ | <<locked>> | 100% | 53,925 psi | 86% | 3054 fps | 98.9% |
| Norma URP | <<locked>> | 94% | 55,579 psi | 89% | 2986 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 53,954 psi | 87% | 2933 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,287 psi | 85% | 3015 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 94% | 54,418 psi | 87% | 2982 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,850 psi | 80% | 2927 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,651 psi | 59% | 1864 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,926 psi | 88% | 2913 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,897 psi | 88% | 2989 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,911 psi | 88% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,924 psi | 85% | 2966 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,622 psi | 89% | 3054 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 54,636 psi | 88% | 2867 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,288 psi | 87% | 2907 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,318 psi | 90% | 2956 fps | 96.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,376 psi | 90% | 3012 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 90% | 54,012 psi | 87% | 2894 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,579 psi | 89% | 2920 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,651 psi | 89% | 2894 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,159 psi | 90% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,519 psi | 86% | 2910 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,347 psi | 90% | 2972 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,853 psi | 86% | 2894 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,882 psi | 88% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,825 psi | 90% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,419 psi | 89% | 2871 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,883 psi | 90% | 3009 fps | 98% |
| Somchem S335 | <<locked>> | 82% | 54,549 psi | 87% | 2795 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,289 psi | 90% | 2913 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,375 psi | 87% | 2904 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,781 psi | 88% | 2989 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,388 psi | 86% | 2930 fps | 98.3% |
| Unknown powder | <<locked>> | 92% | 56,391 psi | 90% | 2992 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 84% | 55,201 psi | 89% | 2779 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,810 psi | 88% | 2825 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,592 psi | 88% | 2835 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,217 psi | 90% | 2890 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,200 psi | 85% | 2907 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,500 psi | 76% | 2815 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 84% | 54,317 psi | 87% | 2861 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,635 psi | 86% | 2953 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,563 psi | 86% | 2986 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,186 psi | 87% | 2897 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,287 psi | 85% | 2959 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,004 psi | 69% | 2949 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,608 psi | 89% | 2956 fps | 97.7% |
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% | 48,559 psi | 78% | 2736 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,177 psi | 68% | 2635 fps | 95.6% |
| Accurate 3100 | <<locked>> | 90% | 35,650 psi | 57% | 2589 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 46,021 psi | 74% | 2740 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,737 psi | 56% | 2585 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 80% | 51,996 psi | 83% | 2871 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,048 psi | 71% | 2717 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 44,614 psi | 72% | 2802 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,457 psi | 78% | 2930 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 44,672 psi | 72% | 2802 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,295 psi | 71% | 2740 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,514 psi | 76% | 2812 fps | 99.8% |
| Alliant Reloder-16 | 57.4 gr | 80% | 34,301 psi | 55% | 2598 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,740 psi | 62% | 2726 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,121 psi | 71% | 2795 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 44,237 psi | 71% | 2841 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,297 psi | 45% | 2451 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,287 psi | 55% | 2631 fps | 95.3% |
| Alliant Reloder-26 | 68.1 gr | 86% | 32,561 psi | 52% | 2628 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,677 psi | 83% | 2884 fps | 99.9% |
| Bofors RP3 | <<locked>> | 80% | 44,338 psi | 71% | 2746 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 44,237 psi | 71% | 2841 fps | 95.4% |
| Bofors RP7 | <<locked>> | 82% | 41,829 psi | 67% | 2667 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 44,802 psi | 72% | 2756 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 80% | 40,335 psi | 65% | 2713 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 86% | 44,585 psi | 71% | 2759 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 52,605 psi | 84% | 2881 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,691 psi | 51% | 2490 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,137 psi | 74% | 2805 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 41,582 psi | 67% | 2772 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 43% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,485 psi | 75% | 2762 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 48,559 psi | 78% | 2792 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,279 psi | 69% | 2694 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,656 psi | 68% | 2664 fps | 96.5% |
| IMR 4350 | <<locked>> | 84% | 40,001 psi | 64% | 2651 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,872 psi | 66% | 2648 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 30,414 psi | 49% | 2457 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 48,747 psi | 78% | 2841 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 50,865 psi | 82% | 2858 fps | 95% |
| IMR 7828 SSC | <<locked>> | 98% | 49,951 psi | 80% | 2946 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 52,040 psi | 83% | 2844 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,213 psi | 82% | 2799 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,485 psi | 75% | 2749 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,159 psi | 61% | 2592 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 38,812 psi | 62% | 2625 fps | 95.6% |
| Lovex S071 | <<locked>> | 96% | 36,666 psi | 59% | 2612 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 50,647 psi | 81% | 2812 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,329 psi | 82% | 2812 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,833 psi | 75% | 2799 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 45,397 psi | 73% | 2799 fps | 95.3% |
| Norma MRP | <<locked>> | 92% | 40,509 psi | 65% | 2792 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 34,809 psi | 56% | 2585 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 47,036 psi | 75% | 2818 fps | 99.9% |
| Ramshot Grand | <<locked>> | 96% | 49,327 psi | 79% | 2943 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 82% | 36,216 psi | 58% | 2625 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 96% | 42,670 psi | 68% | 2789 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 44% | 1667 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,020 psi | 72% | 2740 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,213 psi | 82% | 2930 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,234 psi | 66% | 2792 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,577 psi | 55% | 2602 fps | 96.5% |
| ReloadSwiss RS 70 | 62.8 gr | 80% | 33,895 psi | 54% | 2602 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 48,051 psi | 77% | 2762 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,626 psi | 67% | 2690 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 49,443 psi | 79% | 2841 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 92% | 43,062 psi | 69% | 2776 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 82% | 41,829 psi | 67% | 2667 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,159 psi | 61% | 2592 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,040 psi | 83% | 2844 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,485 psi | 75% | 2749 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,812 psi | 62% | 2625 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,033 psi | 69% | 2749 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,502 psi | 81% | 2841 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,764 psi | 83% | 2753 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,569 psi | 70% | 2615 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,958 psi | 64% | 2595 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,571 psi | 73% | 2828 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 51,343 psi | 82% | 2749 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,518 psi | 84% | 2858 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,235 psi | 68% | 2694 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 31,198 psi | 50% | 2536 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 40,727 psi | 65% | 2697 fps | 95.3% |
| Unknown powder | <<locked>> | 80% | 37,782 psi | 61% | 2644 fps | 97.1% |
| Vihtavuori N133 | <<locked>> | 80% | 48,965 psi | 79% | 2690 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,457 psi | 78% | 2733 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,037 psi | 77% | 2736 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,027 psi | 58% | 2536 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 37,826 psi | 61% | 2618 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 96% | 41,582 psi | 67% | 2703 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 47,688 psi | 76% | 2756 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,218 psi | 61% | 2657 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 82% | 28,863 psi | 46% | 2467 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,549 psi | 57% | 2559 fps | 99% |
| Winchester 760 | <<locked>> | 80% | 40,335 psi | 65% | 2713 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,542 psi | 43% | 2470 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,701 psi | 72% | 2769 fps | 95.3% |
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 97 powders for .300 Win. Mag. loaded with the .308 | 168gr | Reichenberg HDB Universal. Alliant Reloder-26 delivers the highest muzzle velocity at 3,104 fps; across all powders the maximum-charge window runs from 1,821 fps to 3,104 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 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 168.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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, Alliant Reloder-26 rank at the top here: for .300 Win. Mag. with the .308 | 168gr | Reichenberg HDB Universal 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.