Load Specifications
Load data in caliber .308 Norma Mag. with .308 | 156gr | Reichenberg HDB Ogival 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% | 54,781 psi | 86% | 2887 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,392 psi | 90% | 2963 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,419 psi | 87% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,550 psi | 89% | 2976 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,744 psi | 70% | 2861 fps | 97% |
| Accurate 4064 | <<locked>> | 90% | 57,595 psi | 90% | 3012 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,476 psi | 85% | 3054 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 57,711 psi | 90% | 3051 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,448 psi | 87% | 2999 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,649 psi | 83% | 3028 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,608 psi | 89% | 2999 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,114 psi | 85% | 2917 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,157 psi | 85% | 3120 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,535 psi | 87% | 3018 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,941 psi | 88% | 3041 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,695 psi | 87% | 3120 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 57,072 psi | 89% | 3153 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,634 psi | 81% | 3015 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,554 psi | 67% | 2894 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,283 psi | 76% | 3077 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,259 psi | 85% | 3012 fps | 99.7% |
| Bofors RP3 | <<locked>> | 90% | 56,333 psi | 88% | 3038 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,188 psi | 88% | 3009 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,694 psi | 86% | 2930 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,275 psi | 88% | 3028 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 57,232 psi | 90% | 3054 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 96% | 57,522 psi | 90% | 3114 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 94% | 57,725 psi | 90% | 3074 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 84% | 54,795 psi | 86% | 3009 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,680 psi | 87% | 3038 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,752 psi | 86% | 3041 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,983 psi | 85% | 3084 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,636 psi | 56% | 1867 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,014 psi | 88% | 3009 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,114 psi | 86% | 2989 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,824 psi | 86% | 2982 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,476 psi | 85% | 2959 fps | 97.9% |
| IMR 4350 | <<locked>> | 98% | 56,811 psi | 89% | 3038 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,607 psi | 86% | 2989 fps | 97.9% |
| IMR 4831 | <<locked>> | 98% | 54,940 psi | 86% | 3045 fps | 99.7% |
| IMR 4895 | <<locked>> | 88% | 57,406 psi | 90% | 3074 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,608 psi | 89% | 2999 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,983 psi | 85% | 2969 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,840 psi | 89% | 2972 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,563 psi | 86% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 57,624 psi | 90% | 3035 fps | 99.3% |
| Lovex S070 | <<locked>> | 96% | 55,114 psi | 86% | 3015 fps | 98.3% |
| Norma 201 | <<locked>> | 86% | 56,260 psi | 88% | 2992 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,971 psi | 89% | 2992 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,158 psi | 86% | 3028 fps | 100% |
| Norma 204 | <<locked>> | 96% | 53,954 psi | 85% | 3031 fps | 96.1% |
| Norma MRPᴾ | <<locked>> | 100% | 47,747 psi | 75% | 3025 fps | 96.6% |
| Norma URP | <<locked>> | 98% | 57,058 psi | 89% | 3097 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 56,057 psi | 88% | 3054 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,101 psi | 88% | 3097 fps | 99% |
| Ramshot TAC | <<locked>> | 84% | 56,971 psi | 89% | 3022 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,797 psi | 89% | 3038 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,348 psi | 90% | 2999 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,201 psi | 57% | 1913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,522 psi | 90% | 3038 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,884 psi | 89% | 3114 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,695 psi | 89% | 3150 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,215 psi | 85% | 3077 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 57,667 psi | 90% | 3173 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 84% | 56,898 psi | 89% | 2969 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,826 psi | 89% | 2992 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,202 psi | 88% | 3028 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 56,188 psi | 88% | 3009 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 57,624 psi | 90% | 3035 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,983 psi | 85% | 2969 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,563 psi | 86% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,114 psi | 86% | 3015 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,592 psi | 86% | 3041 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,521 psi | 87% | 2995 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,173 psi | 88% | 3022 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,711 psi | 90% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,824 psi | 86% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,273 psi | 85% | 2930 fps | 97.9% |
| Somchem S335 | <<locked>> | 86% | 57,087 psi | 89% | 2923 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,259 psi | 87% | 2989 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,420 psi | 88% | 3025 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,535 psi | 87% | 3097 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,184 psi | 80% | 2976 fps | 96.8% |
| Vihtavuori N130 | <<locked>> | 82% | 57,276 psi | 90% | 2884 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 54,563 psi | 86% | 2861 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,797 psi | 89% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,998 psi | 85% | 2917 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,389 psi | 85% | 2949 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,057 psi | 88% | 3041 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 84% | 57,043 psi | 89% | 2995 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,753 psi | 87% | 2963 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,071 psi | 86% | 3045 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,108 psi | 74% | 2972 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,217 psi | 88% | 3015 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 57,551 psi | 90% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,522 psi | 90% | 3114 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,130 psi | 60% | 2907 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,420 psi | 88% | 3028 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% | 51,343 psi | 80% | 2838 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,888 psi | 69% | 2756 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,692 psi | 81% | 2927 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,209 psi | 72% | 2795 fps | 95.3% |
| Accurate 3100 | <<locked>> | 96% | 38,914 psi | 61% | 2740 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 41,553 psi | 65% | 2753 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 33,112 psi | 52% | 2621 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 47,587 psi | 75% | 2881 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 40,364 psi | 63% | 2720 fps | 98% |
| ADI AR 2209 | <<locked>> | 98% | 49,284 psi | 77% | 2969 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,734 psi | 78% | 2890 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,792 psi | 80% | 2871 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,859 psi | 69% | 2923 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,277 psi | 63% | 2743 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,163 psi | 68% | 2812 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 82% | 33,214 psi | 52% | 2641 fps | 95.1% |
| Alliant Reloder-17 | 60 gr | 80% | 34,853 psi | 55% | 2713 fps | 97.6% |
| Alliant Reloder-19 | <<locked>> | 98% | 48,428 psi | 76% | 2956 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,777 psi | 48% | 2595 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,824 psi | 56% | 2789 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,253 psi | 74% | 2890 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 39,900 psi | 63% | 2746 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 46,412 psi | 73% | 2835 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,213 psi | 80% | 2874 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,153 psi | 77% | 2917 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,828 psi | 64% | 2756 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 88% | 43,772 psi | 69% | 2867 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 88% | 47,369 psi | 74% | 2894 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 48,051 psi | 75% | 2894 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,414 psi | 48% | 2530 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,469 psi | 70% | 2867 fps | 99.7% |
| Hodgdon Superformance | 71.4 gr | 90% | 46,746 psi | 73% | 2953 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,527 psi | 42% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,093 psi | 72% | 2841 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 48,196 psi | 76% | 2884 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,395 psi | 66% | 2756 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,991 psi | 71% | 2785 fps | 95.9% |
| IMR 4350 | <<locked>> | 90% | 44,005 psi | 69% | 2808 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,598 psi | 67% | 2759 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 34,374 psi | 54% | 2641 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 44,237 psi | 69% | 2844 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 49,734 psi | 78% | 2890 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,166 psi | 74% | 2861 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,384 psi | 74% | 2815 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 42,453 psi | 67% | 2762 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 39,523 psi | 62% | 2700 fps | 95.8% |
| Lovex S070 | <<locked>> | 88% | 42,786 psi | 67% | 2789 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 46,485 psi | 73% | 2828 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 47,036 psi | 74% | 2835 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,525 psi | 67% | 2802 fps | 98.9% |
| Norma 204 | <<locked>> | 94% | 50,285 psi | 79% | 2969 fps | 95.2% |
| Norma MRP | <<locked>> | 98% | 44,498 psi | 70% | 2959 fps | 95.6% |
| Norma URP | <<locked>> | 84% | 35,723 psi | 56% | 2687 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 42,598 psi | 67% | 2818 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 39,929 psi | 63% | 2789 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 49,777 psi | 78% | 2900 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,472 psi | 78% | 2917 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,751 psi | 84% | 2943 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,919 psi | 42% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,104 psi | 64% | 2736 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,108 psi | 72% | 2930 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,144 psi | 58% | 2785 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 35,433 psi | 56% | 2703 fps | 95.5% |
| ReloadSwiss RS 70 | 65.5 gr | 86% | 37,666 psi | 59% | 2772 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 50,415 psi | 79% | 2871 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,222 psi | 69% | 2779 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 37,565 psi | 59% | 2690 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 46,412 psi | 73% | 2835 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,523 psi | 62% | 2700 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,166 psi | 74% | 2861 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,453 psi | 67% | 2762 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 42,786 psi | 67% | 2789 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,841 psi | 61% | 2743 fps | 98.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,196 psi | 76% | 2874 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,209 psi | 72% | 2851 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,703 psi | 75% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,871 psi | 62% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,454 psi | 70% | 2759 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 47,384 psi | 74% | 2776 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,095 psi | 75% | 2871 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 38,363 psi | 60% | 2697 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 27,833 psi | 44% | 2510 fps | 96.2% |
| Somchem S385 | <<locked>> | 96% | 44,715 psi | 70% | 2854 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 53,766 psi | 84% | 2835 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,182 psi | 76% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,961 psi | 69% | 2756 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,570 psi | 70% | 2766 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,521 psi | 57% | 2628 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 34,969 psi | 55% | 2635 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 49,893 psi | 78% | 2884 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,018 psi | 67% | 2756 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 34,301 psi | 54% | 2628 fps | 95% |
| Vihtavuori N555 | <<locked>> | 90% | 33,475 psi | 52% | 2674 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,343 psi | 51% | 2549 fps | 97% |
| Winchester 748 | <<locked>> | 80% | 50,169 psi | 79% | 2936 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,947 psi | 69% | 2871 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,964 psi | 45% | 2615 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,788 psi | 72% | 2854 fps | 99.7% |
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 117 powders for .308 Norma Mag. loaded with the .308 | 156gr | Reichenberg HDB Ogival. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,173 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,173 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 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 156.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .308 Norma Mag. with the .308 | 156gr | Reichenberg HDB Ogival they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.