Load Specifications
Load data in caliber .308 Norma Mag. with .308 | 155gr | Atomic 29 HP bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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 2015 | <<locked>> | 82% | 54,244 psi | 85% | 2887 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,840 psi | 89% | 2959 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,853 psi | 86% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,840 psi | 88% | 2966 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,280 psi | 69% | 2858 fps | 96.7% |
| Accurate 4064 | <<locked>> | 90% | 57,000 psi | 89% | 3012 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 57,580 psi | 90% | 3107 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 57,203 psi | 90% | 3048 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 54,984 psi | 86% | 2999 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,130 psi | 88% | 2995 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,261 psi | 90% | 2966 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,566 psi | 90% | 3182 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 54,462 psi | 85% | 3009 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,056 psi | 86% | 3018 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,463 psi | 87% | 3041 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,969 psi | 86% | 3114 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,536 psi | 89% | 3153 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,945 psi | 66% | 2887 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,587 psi | 75% | 3068 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,522 psi | 90% | 3068 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 55,564 psi | 87% | 3031 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,753 psi | 87% | 3009 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,667 psi | 90% | 2979 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,796 psi | 87% | 3025 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,507 psi | 89% | 3048 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 96% | 56,724 psi | 89% | 3107 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 94% | 57,029 psi | 89% | 3068 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 84% | 54,302 psi | 85% | 3005 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,882 psi | 86% | 3031 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,983 psi | 85% | 3038 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 57,479 psi | 90% | 3146 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,636 psi | 56% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,550 psi | 87% | 3009 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,534 psi | 85% | 2989 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,360 psi | 85% | 2979 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 57,537 psi | 90% | 3012 fps | 98.3% |
| IMR 4350 | <<locked>> | 98% | 56,362 psi | 88% | 3035 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,638 psi | 90% | 3041 fps | 98.3% |
| IMR 4831 | <<locked>> | 98% | 54,418 psi | 85% | 3045 fps | 99.7% |
| IMR 4895 | <<locked>> | 88% | 56,913 psi | 89% | 3074 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,130 psi | 88% | 2995 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,319 psi | 90% | 3022 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,391 psi | 88% | 2972 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,609 psi | 90% | 3025 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,956 psi | 89% | 3031 fps | 99.2% |
| Lovex S070 | <<locked>> | 96% | 54,650 psi | 86% | 3012 fps | 98.1% |
| Norma 201 | <<locked>> | 86% | 55,782 psi | 87% | 2992 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,478 psi | 89% | 2989 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,679 psi | 86% | 3025 fps | 100% |
| Norma 204 | <<locked>> | 98% | 57,159 psi | 90% | 3087 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 47,311 psi | 74% | 3022 fps | 96.3% |
| Norma URP | <<locked>> | 98% | 56,536 psi | 89% | 3094 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 55,564 psi | 87% | 3054 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,361 psi | 87% | 3091 fps | 98.8% |
| Ramshot TAC | <<locked>> | 84% | 56,507 psi | 89% | 3018 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,289 psi | 88% | 3035 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,898 psi | 89% | 2999 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,984 psi | 56% | 1913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,797 psi | 89% | 3031 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,318 psi | 88% | 3114 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,188 psi | 88% | 3150 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 57,711 psi | 90% | 3133 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,942 psi | 89% | 3166 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 84% | 56,420 psi | 88% | 2969 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,347 psi | 88% | 2989 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,680 psi | 87% | 3028 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,753 psi | 87% | 3009 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,956 psi | 89% | 3031 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,319 psi | 90% | 3022 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,609 psi | 90% | 3025 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,650 psi | 86% | 3012 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,653 psi | 90% | 3094 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,810 psi | 86% | 2992 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,724 psi | 87% | 3018 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,232 psi | 90% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,725 psi | 90% | 2923 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,435 psi | 90% | 2986 fps | 98.3% |
| Somchem S321 | <<locked>> | 82% | 57,435 psi | 90% | 3028 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,608 psi | 89% | 2920 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,520 psi | 85% | 2982 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 55,695 psi | 87% | 3022 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 3097 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,502 psi | 79% | 2969 fps | 96.5% |
| Vihtavuori N130 | <<locked>> | 82% | 56,768 psi | 89% | 2884 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,609 psi | 90% | 2910 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,260 psi | 88% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 57,014 psi | 89% | 2966 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,522 psi | 90% | 3002 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,288 psi | 87% | 3035 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 56,536 psi | 89% | 2995 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,317 psi | 87% | 2963 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,346 psi | 85% | 3038 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,601 psi | 73% | 2969 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,564 psi | 87% | 3012 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 57,043 psi | 89% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,014 psi | 89% | 3110 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,637 psi | 59% | 2897 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,680 psi | 87% | 3025 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 2015 | <<locked>> | 80% | 51,068 psi | 80% | 2841 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,366 psi | 68% | 2756 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,184 psi | 80% | 2923 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,774 psi | 72% | 2792 fps | 95.1% |
| Accurate 3100 | <<locked>> | 98% | 41,075 psi | 64% | 2792 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 41,075 psi | 64% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,085 psi | 55% | 2680 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 47,108 psi | 74% | 2881 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 40,132 psi | 63% | 2720 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,255 psi | 77% | 2884 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,227 psi | 79% | 2871 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,221 psi | 68% | 2917 fps | 98.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,718 psi | 75% | 2894 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,827 psi | 62% | 2743 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,714 psi | 67% | 2808 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,070 psi | 55% | 2697 fps | 95.8% |
| Alliant Reloder-17 | 59.7 gr | 80% | 34,476 psi | 54% | 2707 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,472 psi | 48% | 2592 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,462 psi | 56% | 2785 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,804 psi | 73% | 2887 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 39,436 psi | 62% | 2743 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 46,021 psi | 72% | 2835 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,981 psi | 80% | 2877 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,457 psi | 76% | 2907 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,408 psi | 63% | 2749 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 88% | 43,308 psi | 68% | 2861 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 90% | 50,009 psi | 78% | 2946 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 47,572 psi | 75% | 2890 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,081 psi | 47% | 2526 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,005 psi | 69% | 2864 fps | 99.6% |
| Hodgdon Superformance | 71 gr | 90% | 46,108 psi | 72% | 2943 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,484 psi | 42% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,643 psi | 72% | 2838 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 47,630 psi | 75% | 2884 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,163 psi | 66% | 2759 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,599 psi | 70% | 2782 fps | 95.6% |
| IMR 4350 | <<locked>> | 92% | 46,456 psi | 73% | 2861 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,933 psi | 70% | 2815 fps | 95.6% |
| IMR 4831 | <<locked>> | 84% | 33,968 psi | 53% | 2635 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 43,772 psi | 69% | 2841 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 49,255 psi | 77% | 2884 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,673 psi | 73% | 2858 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,949 psi | 74% | 2815 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 42,003 psi | 66% | 2759 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 39,131 psi | 61% | 2697 fps | 95.5% |
| Lovex S070 | <<locked>> | 88% | 42,177 psi | 66% | 2782 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 46,021 psi | 72% | 2825 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 46,557 psi | 73% | 2835 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,076 psi | 66% | 2795 fps | 98.8% |
| Norma 204 | <<locked>> | 94% | 49,850 psi | 78% | 2966 fps | 95% |
| Norma MRP | <<locked>> | 98% | 44,077 psi | 69% | 2949 fps | 95.3% |
| Norma URP | <<locked>> | 84% | 35,302 psi | 55% | 2680 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 41,945 psi | 66% | 2812 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 39,552 psi | 62% | 2789 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 49,371 psi | 77% | 2897 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,023 psi | 77% | 2917 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,330 psi | 84% | 2943 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,876 psi | 42% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,712 psi | 64% | 2733 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,600 psi | 71% | 2927 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,753 psi | 58% | 2779 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,838 psi | 55% | 2694 fps | 95.1% |
| ReloadSwiss RS 70 | 65.2 gr | 86% | 37,318 psi | 58% | 2766 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 49,922 psi | 78% | 2867 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,772 psi | 69% | 2776 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 37,130 psi | 58% | 2684 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 46,021 psi | 72% | 2835 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,131 psi | 61% | 2697 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,673 psi | 73% | 2858 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,003 psi | 66% | 2759 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 42,177 psi | 66% | 2782 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,406 psi | 60% | 2740 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,761 psi | 75% | 2871 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,774 psi | 72% | 2848 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,282 psi | 74% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,465 psi | 62% | 2631 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,063 psi | 69% | 2753 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 53,737 psi | 84% | 2972 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,978 psi | 74% | 2776 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,601 psi | 75% | 2867 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 37,927 psi | 59% | 2690 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 27,514 psi | 43% | 2503 fps | 95.9% |
| Somchem S385 | <<locked>> | 98% | 47,297 psi | 74% | 2910 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 53,258 psi | 83% | 2835 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,747 psi | 75% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,482 psi | 68% | 2753 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,106 psi | 69% | 2766 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,100 psi | 57% | 2625 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 34,389 psi | 54% | 2625 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 49,429 psi | 77% | 2884 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,583 psi | 67% | 2753 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,405 psi | 57% | 2687 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 33,025 psi | 52% | 2671 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,010 psi | 50% | 2546 fps | 96.7% |
| Winchester 748 | <<locked>> | 80% | 49,661 psi | 78% | 2933 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,308 psi | 68% | 2861 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,676 psi | 48% | 2680 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,353 psi | 71% | 2851 fps | 99.6% |
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 118 powders for .308 Norma Mag. loaded with the .308 | 155gr | Atomic 29 HP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,182 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .308 Norma Mag. with the .308 | 155gr | Atomic 29 HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate High Country, ADI AR 2213, Alliant Reloder-22 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.