Load Specifications
Load data in caliber .308 Norma Mag. with .308 | 180gr | Speer RN bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Accurate High Country.
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>> | 82% | 55,941 psi | 88% | 2736 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,130 psi | 90% | 2812 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,984 psi | 86% | 2854 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,478 psi | 89% | 2795 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,377 psi | 90% | 2904 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 56,289 psi | 88% | 2999 fps | 97.8% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 57,392 psi | 90% | 2999 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 86% | 56,246 psi | 88% | 2825 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,404 psi | 85% | 2890 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,637 psi | 87% | 2943 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,840 psi | 88% | 2949 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,549 psi | 85% | 2890 fps | 98.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,549 psi | 85% | 2890 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,101 psi | 89% | 2848 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,392 psi | 90% | 2871 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,259 psi | 85% | 2907 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,535 psi | 87% | 2930 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 57,493 psi | 90% | 2936 fps | 98.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,636 psi | 86% | 2936 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,619 psi | 81% | 2871 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,889 psi | 70% | 2795 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,622 psi | 87% | 3012 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,067 psi | 78% | 2861 fps | 97.4% |
| Bofors RP3 | <<locked>> | 84% | 54,592 psi | 86% | 2815 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,636 psi | 86% | 2936 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 57,377 psi | 90% | 2854 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 84% | 54,737 psi | 86% | 2828 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,593 psi | 87% | 2900 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 88% | 55,303 psi | 87% | 2858 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 98% | 55,854 psi | 88% | 2887 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,824 psi | 86% | 2871 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,665 psi | 86% | 2831 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,086 psi | 88% | 2864 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,918 psi | 69% | 2825 fps | 96.6% |
| Hodgdon Superformance | <<locked>> | 90% | 55,941 psi | 88% | 2940 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,405 psi | 57% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,594 psi | 89% | 2828 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,796 psi | 87% | 2808 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,766 psi | 86% | 2792 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 54,868 psi | 86% | 2835 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,608 psi | 87% | 2828 fps | 99.3% |
| IMR 4831 | <<locked>> | 94% | 57,595 psi | 90% | 2894 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,245 psi | 87% | 2844 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,450 psi | 90% | 2874 fps | 97.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,243 psi | 83% | 2913 fps | 96.8% |
| Lovex S060 | <<locked>> | 82% | 57,232 psi | 90% | 2792 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,941 psi | 88% | 2802 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,709 psi | 87% | 2825 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 56,869 psi | 89% | 2864 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,905 psi | 72% | 2707 fps | 98.7% |
| Norma 201 | <<locked>> | 82% | 57,246 psi | 90% | 2812 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,681 psi | 89% | 2858 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,666 psi | 87% | 2887 fps | 98.2% |
| Norma MRP | <<locked>> | 98% | 54,288 psi | 85% | 2963 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 55,724 psi | 87% | 2887 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,522 psi | 90% | 2884 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,548 psi | 84% | 2930 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 92% | 54,665 psi | 86% | 2890 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,790 psi | 75% | 2805 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,130 psi | 58% | 1804 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,752 psi | 86% | 2815 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,114 psi | 86% | 2923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 57,101 psi | 89% | 2927 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,579 psi | 87% | 2956 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,888 psi | 69% | 2818 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 82% | 54,665 psi | 86% | 2766 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,694 psi | 86% | 2812 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,144 psi | 88% | 2864 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 98% | 56,623 psi | 89% | 2920 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 90% | 57,377 psi | 90% | 2854 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,709 psi | 87% | 2825 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,941 psi | 88% | 2802 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,869 psi | 89% | 2864 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,130 psi | 88% | 2871 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,087 psi | 89% | 2841 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,448 psi | 87% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,158 psi | 86% | 2776 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,130 psi | 88% | 2917 fps | 98.6% |
| Somchem S335 | <<locked>> | 82% | 57,638 psi | 90% | 2736 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 54,592 psi | 86% | 2808 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,230 psi | 85% | 2802 fps | 96.2% |
| Somchem S365 | <<locked>> | 94% | 55,347 psi | 87% | 2890 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 57,479 psi | 90% | 2900 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 82% | 55,042 psi | 86% | 2726 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,187 psi | 86% | 2740 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,782 psi | 87% | 2779 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,360 psi | 85% | 2831 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,881 psi | 83% | 2815 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 84% | 56,652 psi | 89% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,942 psi | 89% | 2887 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,346 psi | 85% | 2897 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,607 psi | 86% | 2953 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,653 psi | 90% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,840 psi | 88% | 2904 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,702 psi | 73% | 2930 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,305 psi | 90% | 2851 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,624 psi | 90% | 2894 fps | 98.5% |
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% | 52,547 psi | 82% | 2690 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,009 psi | 78% | 2700 fps | 98% |
| Accurate 3100 | <<locked>> | 86% | 34,330 psi | 54% | 2470 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 49,777 psi | 78% | 2697 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,116 psi | 60% | 2572 fps | 98.4% |
| Accurate High Country | 70.5 gr | 92% | 45,614 psi | 71% | 2812 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 98% | 53,345 psi | 84% | 2933 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 46,746 psi | 73% | 2671 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 42,003 psi | 66% | 2661 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 96% | 48,805 psi | 76% | 2822 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,924 psi | 81% | 2890 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 42,047 psi | 66% | 2661 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 42,047 psi | 66% | 2661 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,369 psi | 74% | 2697 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,662 psi | 79% | 2766 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,927 psi | 58% | 2575 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,887 psi | 66% | 2700 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,582 psi | 65% | 2654 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,872 psi | 66% | 2703 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,166 psi | 43% | 2333 fps | 96.2% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,692 psi | 51% | 2507 fps | 95.4% |
| Alliant Reloder-26 | 64.7 gr | 82% | 30,980 psi | 49% | 2500 fps | 95.6% |
| Bofors RP15 | <<locked>> | 94% | 41,292 psi | 65% | 2690 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 47,776 psi | 75% | 2710 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,872 psi | 66% | 2703 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 42,032 psi | 66% | 2585 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 80% | 48,022 psi | 75% | 2720 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 39,958 psi | 63% | 2615 fps | 96.4% |
| Hodgdon H4350 | <<locked>> | 80% | 42,859 psi | 67% | 2635 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 96% | 52,185 psi | 82% | 2828 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,242 psi | 80% | 2812 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,461 psi | 54% | 2470 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,547 psi | 82% | 2812 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,350 psi | 65% | 2762 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 38,754 psi | 61% | 2621 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,282 psi | 43% | 1575 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,301 psi | 84% | 2776 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,153 psi | 77% | 2707 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,387 psi | 81% | 2736 fps | 98.8% |
| IMR 4350 | <<locked>> | 80% | 37,550 psi | 59% | 2510 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,453 psi | 68% | 2615 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 36,564 psi | 57% | 2523 fps | 98.1% |
| IMR 4895 | <<locked>> | 80% | 51,982 psi | 81% | 2795 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,778 psi | 80% | 2769 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 96% | 46,499 psi | 73% | 2792 fps | 95% |
| Lovex S060 | <<locked>> | 80% | 53,940 psi | 85% | 2743 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,603 psi | 78% | 2703 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,959 psi | 64% | 2566 fps | 98% |
| Lovex S070 | <<locked>> | 80% | 39,131 psi | 61% | 2543 fps | 96.4% |
| Lovex S071 | <<locked>> | 90% | 33,228 psi | 52% | 2444 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 53,896 psi | 84% | 2762 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,024 psi | 78% | 2756 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,409 psi | 66% | 2651 fps | 95.1% |
| Norma MRP | <<locked>> | 88% | 38,319 psi | 60% | 2654 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 37,753 psi | 59% | 2562 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 50,343 psi | 79% | 2776 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,514 psi | 73% | 2802 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 36,666 psi | 57% | 2549 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 96% | 41,292 psi | 65% | 2677 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,818 psi | 44% | 1614 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,022 psi | 75% | 2703 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,498 psi | 70% | 2753 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,811 psi | 59% | 2589 fps | 98.1% |
| ReloadSwiss RS 70 | 62.6 gr | 80% | 36,651 psi | 57% | 2592 fps | 97.4% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,247 psi | 60% | 2684 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 51,227 psi | 80% | 2713 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,933 psi | 70% | 2657 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,470 psi | 73% | 2697 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 88% | 40,654 psi | 64% | 2635 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 42,032 psi | 66% | 2585 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,959 psi | 64% | 2566 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 49,603 psi | 78% | 2703 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,131 psi | 61% | 2543 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,151 psi | 72% | 2710 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,577 psi | 84% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,238 psi | 72% | 2566 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,074 psi | 63% | 2510 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,105 psi | 68% | 2687 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 54,331 psi | 85% | 2690 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,281 psi | 71% | 2657 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,865 psi | 80% | 2746 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 34,200 psi | 54% | 2520 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 38,885 psi | 61% | 2569 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 51,735 psi | 81% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,677 psi | 81% | 2690 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,192 psi | 68% | 2585 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,247 psi | 62% | 2562 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 40,756 psi | 64% | 2598 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 49,937 psi | 78% | 2684 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,566 psi | 60% | 2562 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 29,950 psi | 47% | 2408 fps | 96.4% |
| Vihtavuori N560 | <<locked>> | 96% | 51,097 psi | 80% | 2890 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,232 psi | 60% | 2533 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 40,132 psi | 63% | 2618 fps | 96.5% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,614 psi | 40% | 2362 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,751 psi | 84% | 2799 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,627 psi | 68% | 2661 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 97 powders for .308 Norma Mag. loaded with the .308 | 180gr | Speer RN. Alliant Reloder-26 delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,762 fps to 3,012 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 (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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. Alliant Reloder-26, ReloadSwiss RS 70, Accurate High Country rank at the top here: for .308 Norma Mag. with the .308 | 180gr | Speer RN 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.