Load Specifications
Load data in caliber .308 Norma Mag. with .308 | 155.5gr | Berger Fullbore Target bullet and 99 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-17 and ReloadSwiss RS 60.
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 2015 | <<locked>> | 82% | 56,072 psi | 88% | 2904 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,521 psi | 87% | 2933 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,029 psi | 89% | 3002 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,566 psi | 90% | 2989 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,441 psi | 73% | 2890 fps | 97.3% |
| Accurate 4064 | <<locked>> | 88% | 55,680 psi | 87% | 2986 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,956 psi | 88% | 3077 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 55,317 psi | 87% | 3015 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,376 psi | 88% | 3015 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,882 psi | 84% | 3048 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,638 psi | 90% | 3015 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,317 psi | 87% | 2933 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,201 psi | 87% | 3136 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 56,072 psi | 88% | 3025 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,695 psi | 89% | 3035 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,377 psi | 90% | 3064 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,768 psi | 89% | 3136 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,317 psi | 85% | 3110 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,895 psi | 83% | 3035 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,714 psi | 69% | 2913 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,530 psi | 78% | 3097 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,303 psi | 87% | 3028 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 57,711 psi | 90% | 3054 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,290 psi | 90% | 3028 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,666 psi | 87% | 2943 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,464 psi | 90% | 3045 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,665 psi | 86% | 3012 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 94% | 54,766 psi | 86% | 3071 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 92% | 54,955 psi | 86% | 3028 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 84% | 55,927 psi | 88% | 3022 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,782 psi | 89% | 3054 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,825 psi | 87% | 3058 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,274 psi | 87% | 3107 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 56% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,000 psi | 89% | 3025 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,289 psi | 88% | 3005 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,854 psi | 88% | 2995 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,434 psi | 87% | 2976 fps | 98.1% |
| IMR 4350 | <<locked>> | 96% | 54,346 psi | 85% | 2999 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,521 psi | 87% | 3002 fps | 98% |
| IMR 4831 | <<locked>> | 98% | 56,420 psi | 88% | 3068 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 55,056 psi | 86% | 3035 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,638 psi | 90% | 3015 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,361 psi | 87% | 2986 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,607 psi | 86% | 2936 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,811 psi | 87% | 2992 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,332 psi | 87% | 2999 fps | 99% |
| Lovex S070 | <<locked>> | 96% | 56,333 psi | 88% | 3035 fps | 98.4% |
| Norma 201 | <<locked>> | 86% | 57,537 psi | 90% | 3009 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,636 psi | 86% | 2956 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,579 psi | 89% | 3048 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,969 psi | 86% | 3048 fps | 96.3% |
| Norma MRPᴾ | <<locked>> | 100% | 49,153 psi | 77% | 3051 fps | 96.9% |
| Norma URP | <<locked>> | 96% | 54,636 psi | 86% | 3058 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 88% | 57,392 psi | 90% | 3074 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,159 psi | 90% | 3114 fps | 99.1% |
| Ramshot TAC | <<locked>> | 82% | 54,375 psi | 85% | 2979 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,172 psi | 85% | 2995 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,390 psi | 57% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,868 psi | 86% | 2992 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,433 psi | 85% | 3074 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,925 psi | 85% | 3107 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,767 psi | 87% | 3097 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,839 psi | 86% | 3127 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 82% | 54,911 psi | 86% | 2936 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,621 psi | 86% | 2956 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,580 psi | 90% | 3048 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,663 psi | 81% | 3015 fps | 96% |
| Rottweil R 907 | <<locked>> | 94% | 57,290 psi | 90% | 3028 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,332 psi | 87% | 2999 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,361 psi | 87% | 2986 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,811 psi | 87% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,333 psi | 88% | 3035 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,680 psi | 87% | 3054 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,710 psi | 89% | 3015 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,203 psi | 90% | 3035 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,172 psi | 86% | 2890 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,825 psi | 87% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,419 psi | 87% | 2946 fps | 98% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,169 psi | 80% | 3009 fps | 95.9% |
| Somchem S335 | <<locked>> | 84% | 54,824 psi | 86% | 2890 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,333 psi | 88% | 3002 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,667 psi | 90% | 3045 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,029 psi | 89% | 3117 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,417 psi | 82% | 2995 fps | 97% |
| Vihtavuori N133 | <<locked>> | 84% | 55,564 psi | 87% | 2874 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,708 psi | 86% | 2920 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,317 psi | 87% | 2936 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,550 psi | 87% | 2969 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,188 psi | 90% | 3058 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 54,549 psi | 85% | 2959 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,869 psi | 89% | 2979 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,217 psi | 88% | 3061 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,762 psi | 76% | 2999 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,232 psi | 90% | 3028 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,839 psi | 86% | 3009 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,013 psi | 86% | 3074 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,305 psi | 62% | 2936 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,493 psi | 90% | 3045 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% | 52,605 psi | 82% | 2854 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,687 psi | 72% | 2782 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,040 psi | 83% | 2943 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 47,253 psi | 74% | 2812 fps | 95.6% |
| Accurate 3100 | <<locked>> | 96% | 40,350 psi | 63% | 2769 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 43,192 psi | 68% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 34,490 psi | 54% | 2654 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 48,675 psi | 76% | 2900 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 41,321 psi | 65% | 2740 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 98% | 50,285 psi | 79% | 2986 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,749 psi | 80% | 2904 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,996 psi | 81% | 2887 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,904 psi | 70% | 2946 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 49,342 psi | 77% | 2913 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,423 psi | 65% | 2766 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,309 psi | 69% | 2835 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 82% | 34,200 psi | 54% | 2664 fps | 95.5% |
| Alliant Reloder-17 | 60.1 gr | 80% | 35,926 psi | 56% | 2736 fps | 98% |
| Alliant Reloder-19 | <<locked>> | 98% | 49,443 psi | 77% | 2972 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,965 psi | 47% | 2566 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 92% | 37,217 psi | 58% | 2825 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,269 psi | 76% | 2907 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 41,263 psi | 65% | 2772 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 44,672 psi | 70% | 2799 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,417 psi | 82% | 2890 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,328 psi | 79% | 2933 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,047 psi | 66% | 2779 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 86% | 41,916 psi | 66% | 2825 fps | 95% |
| Hodgdon H4350 | <<locked>> | 88% | 48,370 psi | 76% | 2910 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 49,197 psi | 77% | 2913 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,660 psi | 46% | 2503 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,571 psi | 71% | 2884 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 44,454 psi | 70% | 2904 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,701 psi | 42% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,050 psi | 74% | 2858 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 49,356 psi | 77% | 2900 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,424 psi | 68% | 2776 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,948 psi | 72% | 2802 fps | 96.1% |
| IMR 4350 | <<locked>> | 90% | 44,991 psi | 71% | 2828 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,497 psi | 68% | 2779 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 33,344 psi | 52% | 2612 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 45,440 psi | 71% | 2867 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 50,749 psi | 80% | 2904 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,515 psi | 76% | 2881 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,341 psi | 76% | 2831 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 43,656 psi | 68% | 2782 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 38,232 psi | 60% | 2667 fps | 95.3% |
| Lovex S070 | <<locked>> | 86% | 41,321 psi | 65% | 2753 fps | 95% |
| Norma 201 | <<locked>> | 80% | 47,761 psi | 75% | 2851 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,211 psi | 76% | 2854 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,685 psi | 68% | 2822 fps | 99.1% |
| Norma 204 | <<locked>> | 94% | 51,517 psi | 81% | 2989 fps | 95.5% |
| Norma MRP | <<locked>> | 96% | 42,815 psi | 67% | 2920 fps | 95% |
| Norma URP | <<locked>> | 82% | 34,519 psi | 54% | 2651 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 43,700 psi | 68% | 2841 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 41,031 psi | 64% | 2812 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 50,792 psi | 80% | 2917 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,502 psi | 79% | 2933 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,151 psi | 43% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,177 psi | 66% | 2756 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,311 psi | 74% | 2949 fps | 99.2% |
| ReloadSwiss RS 60 | 60.1 gr | 80% | 38,218 psi | 60% | 2808 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 36,651 psi | 57% | 2730 fps | 95.9% |
| ReloadSwiss RS 70 | 65.6 gr | 86% | 38,711 psi | 61% | 2795 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 51,866 psi | 81% | 2890 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,469 psi | 71% | 2799 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 38,899 psi | 61% | 2713 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 98% | 48,370 psi | 76% | 2956 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 86% | 44,672 psi | 70% | 2799 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,232 psi | 60% | 2667 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,515 psi | 76% | 2881 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,656 psi | 68% | 2782 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 41,321 psi | 65% | 2753 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,914 psi | 63% | 2766 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,400 psi | 77% | 2894 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,239 psi | 74% | 2867 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,747 psi | 76% | 2792 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,901 psi | 64% | 2651 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,830 psi | 67% | 2723 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,906 psi | 75% | 2953 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 48,515 psi | 76% | 2792 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,124 psi | 77% | 2887 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 39,552 psi | 62% | 2720 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 28,979 psi | 45% | 2543 fps | 96.7% |
| Somchem S385 | <<locked>> | 96% | 45,905 psi | 72% | 2877 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 49,168 psi | 77% | 2782 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,194 psi | 71% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,643 psi | 72% | 2785 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,637 psi | 59% | 2651 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 33,620 psi | 53% | 2598 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 50,952 psi | 80% | 2900 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,106 psi | 69% | 2772 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,462 psi | 56% | 2654 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 88% | 32,576 psi | 51% | 2648 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,301 psi | 52% | 2572 fps | 97.3% |
| Winchester 748 | <<locked>> | 80% | 51,242 psi | 80% | 2953 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 42,076 psi | 66% | 2828 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 92% | 30,211 psi | 47% | 2657 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,876 psi | 73% | 2871 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 118 powders for .308 Norma Mag. loaded with the .308 | 155.5gr | Berger Fullbore Target. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,136 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,136 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 155.5 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, Accurate MAGPRO 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-17, ReloadSwiss RS 60 rank at the top here: for .308 Norma Mag. with the .308 | 155.5gr | Berger Fullbore Target they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate High Country, Accurate MAGPRO, ADI AR 2213 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.