Load Specifications
Load data in caliber .308 Norma Mag. with .308 | 180gr | Norma Semi Soft Point 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-26 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.
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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% | 55,071 psi | 86% | 2723 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,275 psi | 88% | 2795 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,954 psi | 85% | 2835 fps | 99.6% |
| Accurate 4064 | <<locked>> | 84% | 55,434 psi | 87% | 2776 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,405 psi | 88% | 2890 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 55,230 psi | 87% | 2979 fps | 97.5% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,144 psi | 88% | 2976 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 86% | 55,593 psi | 87% | 2812 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,203 psi | 90% | 2930 fps | 98.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 2920 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,839 psi | 86% | 2930 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,391 psi | 88% | 2831 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,666 psi | 89% | 2858 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,855 psi | 89% | 2940 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,607 psi | 86% | 2913 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,478 psi | 89% | 2917 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,650 psi | 84% | 2917 fps | 98.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,792 psi | 80% | 2854 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,077 psi | 69% | 2776 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,317 psi | 85% | 2989 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,327 psi | 77% | 2844 fps | 97.2% |
| Bofors RP3 | <<locked>> | 86% | 57,377 psi | 90% | 2851 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,650 psi | 84% | 2917 fps | 98.2% |
| Bofors RP7 | <<locked>> | 90% | 56,565 psi | 89% | 2835 fps | 99% |
| Hodgdon H380 | <<locked>> | 84% | 54,056 psi | 85% | 2815 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 54,766 psi | 86% | 2884 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 54,679 psi | 86% | 2844 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 54,926 psi | 86% | 2867 fps | 96.3% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,493 psi | 90% | 2907 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,319 psi | 90% | 2864 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,376 psi | 87% | 2851 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,149 psi | 68% | 2802 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 90% | 54,911 psi | 86% | 2920 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 57% | 1759 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,883 psi | 88% | 2812 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,071 psi | 86% | 2795 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,740 psi | 90% | 2831 fps | 99.5% |
| IMR 4350 | <<locked>> | 94% | 57,464 psi | 90% | 2867 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,781 psi | 86% | 2812 fps | 99.1% |
| IMR 4831 | <<locked>> | 94% | 56,724 psi | 89% | 2881 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,447 psi | 85% | 2831 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,579 psi | 89% | 2858 fps | 96.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,344 psi | 82% | 2894 fps | 96.5% |
| Lovex S060 | <<locked>> | 82% | 56,507 psi | 89% | 2776 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,201 psi | 87% | 2789 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,911 psi | 86% | 2808 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 56,043 psi | 88% | 2848 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,918 psi | 70% | 2687 fps | 98.5% |
| Norma 201 | <<locked>> | 82% | 56,463 psi | 88% | 2795 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,406 psi | 90% | 2795 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,956 psi | 88% | 2841 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,650 psi | 86% | 2864 fps | 97.9% |
| Norma MRPᴾ | <<locked>> | 100% | 57,159 psi | 90% | 3005 fps | 99.5% |
| Norma URP | <<locked>> | 92% | 54,839 psi | 86% | 2871 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,637 psi | 89% | 2867 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,620 psi | 82% | 2910 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 94% | 57,305 psi | 90% | 2927 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,978 psi | 74% | 2785 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,028 psi | 58% | 1795 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,522 psi | 90% | 2854 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,143 psi | 85% | 2907 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,014 psi | 88% | 2910 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,534 psi | 85% | 2936 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,004 psi | 67% | 2795 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 84% | 57,261 psi | 90% | 2799 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,450 psi | 90% | 2848 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,390 psi | 87% | 2848 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 98% | 55,796 psi | 87% | 2907 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 90% | 56,565 psi | 89% | 2835 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,911 psi | 86% | 2808 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,201 psi | 87% | 2789 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,043 psi | 88% | 2848 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,201 psi | 87% | 2854 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,376 psi | 88% | 2828 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,305 psi | 90% | 2726 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,752 psi | 86% | 2684 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,389 psi | 85% | 2759 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,317 psi | 87% | 2900 fps | 98.4% |
| Somchem S335 | <<locked>> | 82% | 56,898 psi | 89% | 2723 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,290 psi | 90% | 2841 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,188 psi | 90% | 2841 fps | 96.7% |
| Somchem S365 | <<locked>> | 94% | 54,085 psi | 85% | 2871 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,478 psi | 89% | 2881 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 84% | 57,711 psi | 90% | 2756 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,447 psi | 85% | 2726 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,100 psi | 86% | 2769 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,174 psi | 90% | 2867 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,953 psi | 81% | 2799 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 84% | 56,028 psi | 88% | 2769 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,130 psi | 88% | 2871 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,724 psi | 89% | 2930 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,450 psi | 90% | 2992 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,681 psi | 89% | 2831 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,013 psi | 86% | 2887 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,818 psi | 72% | 2913 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,376 psi | 88% | 2831 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,637 psi | 89% | 2874 fps | 98.3% |
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% | 51,721 psi | 81% | 2677 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,414 psi | 77% | 2684 fps | 97.8% |
| Accurate 3100 | <<locked>> | 86% | 33,591 psi | 53% | 2451 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 48,965 psi | 77% | 2684 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,391 psi | 59% | 2552 fps | 98.2% |
| Accurate High Country | <<locked>> | 94% | 48,066 psi | 75% | 2854 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 98% | 52,373 psi | 82% | 2913 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 46,238 psi | 72% | 2661 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,179 psi | 69% | 2703 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 96% | 47,964 psi | 75% | 2799 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,952 psi | 80% | 2871 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,659 psi | 73% | 2680 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,908 psi | 78% | 2753 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,448 psi | 57% | 2562 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,220 psi | 65% | 2684 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,685 psi | 68% | 2694 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,191 psi | 65% | 2687 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,687 psi | 42% | 2316 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,242 psi | 51% | 2490 fps | 95% |
| Alliant Reloder-26 | 63.8 gr | 82% | 30,501 psi | 48% | 2484 fps | 95.2% |
| Bofors RP15 | <<locked>> | 96% | 43,250 psi | 68% | 2730 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 47,021 psi | 74% | 2694 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,191 psi | 65% | 2687 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 41,394 psi | 65% | 2566 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 47,311 psi | 74% | 2703 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,320 psi | 62% | 2598 fps | 96.2% |
| Hodgdon H4350 | <<locked>> | 80% | 42,221 psi | 66% | 2618 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 96% | 51,488 psi | 81% | 2812 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,299 psi | 79% | 2789 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,953 psi | 53% | 2457 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,793 psi | 81% | 2799 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,582 psi | 64% | 2740 fps | 95.1% |
| Hodgdon Superformance | 64.2 gr | 80% | 38,247 psi | 60% | 2605 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 43% | 1568 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,562 psi | 82% | 2762 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,646 psi | 76% | 2694 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,734 psi | 80% | 2720 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 39,508 psi | 62% | 2549 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,815 psi | 67% | 2598 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 35,911 psi | 56% | 2507 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 51,213 psi | 80% | 2779 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 49,908 psi | 78% | 2746 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 98% | 48,849 psi | 77% | 2831 fps | 95.6% |
| Lovex S060 | <<locked>> | 80% | 53,200 psi | 83% | 2730 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,863 psi | 77% | 2690 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,321 psi | 63% | 2549 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 38,522 psi | 60% | 2526 fps | 96.1% |
| Lovex S071 | <<locked>> | 92% | 34,722 psi | 54% | 2477 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 53,142 psi | 83% | 2746 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,751 psi | 84% | 2743 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,269 psi | 77% | 2740 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,614 psi | 70% | 2690 fps | 95.7% |
| Norma MRP | <<locked>> | 88% | 37,652 psi | 59% | 2638 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 37,057 psi | 58% | 2543 fps | 98% |
| Ramshot Big Game | <<locked>> | 80% | 49,458 psi | 78% | 2759 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,643 psi | 72% | 2782 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 36,042 psi | 56% | 2533 fps | 96% |
| Ramshot Magnum | <<locked>> | 96% | 40,538 psi | 64% | 2657 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 44% | 1608 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,384 psi | 74% | 2690 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,772 psi | 69% | 2740 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,985 psi | 58% | 2569 fps | 97.8% |
| ReloadSwiss RS 70 | 61.6 gr | 80% | 35,926 psi | 56% | 2569 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,449 psi | 59% | 2657 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 50,662 psi | 79% | 2700 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,208 psi | 69% | 2641 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 48,675 psi | 76% | 2733 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 90% | 42,728 psi | 67% | 2677 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 41,394 psi | 65% | 2566 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,321 psi | 63% | 2549 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 48,863 psi | 77% | 2690 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,522 psi | 60% | 2526 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,484 psi | 71% | 2694 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,895 psi | 83% | 2779 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,824 psi | 84% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,527 psi | 71% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,494 psi | 62% | 2493 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,337 psi | 66% | 2671 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 53,621 psi | 84% | 2677 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,599 psi | 70% | 2641 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,053 psi | 78% | 2726 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 33,663 psi | 53% | 2507 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 38,130 psi | 60% | 2549 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 50,821 psi | 80% | 2664 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,966 psi | 80% | 2677 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,511 psi | 67% | 2569 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,595 psi | 60% | 2546 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 40,074 psi | 63% | 2585 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 49,269 psi | 77% | 2671 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,942 psi | 59% | 2546 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 29,312 psi | 46% | 2392 fps | 96% |
| Vihtavuori N560 | <<locked>> | 96% | 50,125 psi | 79% | 2871 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,695 psi | 59% | 2516 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 39,320 psi | 62% | 2598 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,208 psi | 40% | 2343 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,852 psi | 83% | 2782 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,917 psi | 67% | 2644 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 103 powders for .308 Norma Mag. loaded with the .308 | 180gr | Norma Semi Soft Point. Norma MRP delivers the highest muzzle velocity at 3,005 fps; across all powders the maximum-charge window runs from 1,759 fps to 3,005 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:14.5 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. ReloadSwiss RS 70, Alliant Reloder-26, Hodgdon Superformance rank at the top here: for .308 Norma Mag. with the .308 | 180gr | Norma Semi Soft Point they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.