Load Specifications
Load data in caliber .308 Norma Mag. with .306 | 160gr | Peregrine VLR-4 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, 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>> | 84% | 57,624 psi | 90% | 2884 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,594 psi | 89% | 2907 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,650 psi | 86% | 2927 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,651 psi | 87% | 2917 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,918 psi | 69% | 2805 fps | 96.8% |
| Accurate 4064 | <<locked>> | 90% | 56,594 psi | 89% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 57,348 psi | 90% | 3058 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 56,985 psi | 89% | 2995 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 54,607 psi | 86% | 2943 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,854 psi | 88% | 2943 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,058 psi | 89% | 2913 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,130 psi | 90% | 3123 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 54,128 psi | 85% | 2953 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,694 psi | 86% | 2963 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,303 psi | 87% | 2989 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,636 psi | 86% | 3058 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,072 psi | 88% | 3094 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,756 psi | 65% | 2838 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,239 psi | 74% | 3015 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,043 psi | 89% | 3012 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 55,288 psi | 87% | 2979 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,274 psi | 87% | 2953 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,348 psi | 90% | 2920 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,434 psi | 87% | 2969 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,711 psi | 90% | 3077 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,275 psi | 88% | 2995 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 96% | 56,246 psi | 88% | 3051 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 94% | 56,681 psi | 89% | 3012 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 86% | 57,624 psi | 90% | 3005 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,563 psi | 86% | 2979 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 57,595 psi | 90% | 3041 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 57,116 psi | 90% | 3094 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,578 psi | 56% | 1831 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,317 psi | 87% | 2956 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,331 psi | 85% | 2936 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,522 psi | 90% | 2976 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 57,450 psi | 90% | 2963 fps | 98.4% |
| IMR 4350 | <<locked>> | 98% | 55,912 psi | 88% | 2982 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,232 psi | 90% | 2986 fps | 98.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 57,682 psi | 90% | 3045 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 56,753 psi | 89% | 3018 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,854 psi | 88% | 2943 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,942 psi | 89% | 2966 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,333 psi | 88% | 2920 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,450 psi | 90% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,797 psi | 89% | 2979 fps | 99.2% |
| Lovex S070 | <<locked>> | 96% | 54,302 psi | 85% | 2963 fps | 98.2% |
| Norma 201 | <<locked>> | 86% | 55,492 psi | 87% | 2933 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,159 psi | 88% | 2936 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,549 psi | 85% | 2972 fps | 100% |
| Norma 204 | <<locked>> | 98% | 56,826 psi | 89% | 3035 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 46,920 psi | 74% | 2966 fps | 96.4% |
| Norma URP | <<locked>> | 98% | 56,275 psi | 88% | 3041 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 55,143 psi | 86% | 2999 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,027 psi | 86% | 3035 fps | 98.8% |
| Ramshot TAC | <<locked>> | 84% | 56,246 psi | 88% | 2963 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,014 psi | 88% | 2982 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,536 psi | 89% | 2943 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,158 psi | 57% | 1873 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,681 psi | 89% | 2979 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,912 psi | 88% | 3054 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,898 psi | 88% | 3094 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 57,116 psi | 90% | 3077 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,507 psi | 89% | 3110 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 84% | 56,159 psi | 88% | 2913 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,057 psi | 88% | 2936 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,405 psi | 87% | 2972 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,274 psi | 87% | 2953 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,797 psi | 89% | 2979 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,942 psi | 89% | 2966 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,450 psi | 90% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,302 psi | 85% | 2963 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,305 psi | 90% | 3038 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,505 psi | 85% | 2936 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,390 psi | 87% | 2963 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,072 psi | 89% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,551 psi | 90% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,232 psi | 90% | 2933 fps | 98.4% |
| Somchem S321 | <<locked>> | 82% | 57,087 psi | 89% | 2972 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,304 psi | 88% | 2867 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,288 psi | 85% | 2930 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,637 psi | 87% | 2969 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,462 psi | 85% | 3041 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,169 psi | 79% | 2917 fps | 96.6% |
| Vihtavuori N130 | <<locked>> | 82% | 56,449 psi | 88% | 2828 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,464 psi | 90% | 2858 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,144 psi | 88% | 2897 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,855 psi | 89% | 2913 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,101 psi | 89% | 2946 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,984 psi | 86% | 2982 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 84% | 56,275 psi | 88% | 2940 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,998 psi | 86% | 2910 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,143 psi | 85% | 2986 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,137 psi | 72% | 2913 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,347 psi | 87% | 2959 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,608 psi | 89% | 2989 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,550 psi | 89% | 3054 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,246 psi | 58% | 2844 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,390 psi | 87% | 2969 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% | 50,691 psi | 79% | 2785 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,076 psi | 68% | 2703 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,894 psi | 80% | 2867 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,571 psi | 71% | 2743 fps | 95.2% |
| Accurate 3100 | <<locked>> | 96% | 38,029 psi | 60% | 2687 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 40,785 psi | 64% | 2700 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,809 psi | 55% | 2631 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 46,891 psi | 73% | 2825 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 39,900 psi | 63% | 2671 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,066 psi | 77% | 2835 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,864 psi | 78% | 2815 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,207 psi | 68% | 2871 fps | 98.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,529 psi | 74% | 2838 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,595 psi | 62% | 2694 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,511 psi | 67% | 2759 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,677 psi | 51% | 2589 fps | 95% |
| Alliant Reloder-17 | 58 gr | 80% | 34,243 psi | 54% | 2657 fps | 97.5% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,211 psi | 47% | 2546 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,157 psi | 55% | 2736 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,615 psi | 73% | 2838 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 39,262 psi | 62% | 2694 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 45,861 psi | 72% | 2785 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,749 psi | 80% | 2822 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,414 psi | 76% | 2861 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,737 psi | 84% | 3018 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 40,089 psi | 63% | 2700 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 88% | 43,047 psi | 67% | 2812 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 90% | 49,777 psi | 78% | 2894 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 47,398 psi | 74% | 2838 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,037 psi | 47% | 2484 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,700 psi | 68% | 2812 fps | 99.7% |
| Hodgdon Superformance | 69 gr | 90% | 45,774 psi | 72% | 2890 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,368 psi | 41% | 1634 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,643 psi | 72% | 2792 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 47,500 psi | 74% | 2831 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,872 psi | 66% | 2707 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,454 psi | 70% | 2733 fps | 95.8% |
| IMR 4350 | <<locked>> | 92% | 46,267 psi | 73% | 2812 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,730 psi | 70% | 2766 fps | 95.8% |
| IMR 4831 | <<locked>> | 84% | 33,721 psi | 53% | 2589 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 43,598 psi | 68% | 2792 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 49,066 psi | 77% | 2835 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,325 psi | 73% | 2805 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,702 psi | 73% | 2762 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 41,727 psi | 65% | 2707 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 38,841 psi | 61% | 2648 fps | 95.6% |
| Lovex S070 | <<locked>> | 88% | 42,047 psi | 66% | 2733 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 45,745 psi | 72% | 2772 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 46,325 psi | 73% | 2782 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,858 psi | 66% | 2746 fps | 98.9% |
| Norma 204 | <<locked>> | 94% | 49,371 psi | 77% | 2907 fps | 95% |
| Norma MRP | <<locked>> | 98% | 43,642 psi | 68% | 2897 fps | 95.4% |
| Norma URP | <<locked>> | 84% | 35,186 psi | 55% | 2635 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 41,930 psi | 66% | 2766 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 39,320 psi | 62% | 2740 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 49,197 psi | 77% | 2848 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,791 psi | 76% | 2864 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,098 psi | 83% | 2887 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,789 psi | 42% | 1673 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,611 psi | 64% | 2687 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,266 psi | 71% | 2871 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,521 psi | 57% | 2730 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,693 psi | 54% | 2651 fps | 95.3% |
| ReloadSwiss RS 70 | 63.4 gr | 86% | 37,159 psi | 58% | 2723 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 49,763 psi | 78% | 2815 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,685 psi | 68% | 2726 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 36,912 psi | 58% | 2635 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 45,861 psi | 72% | 2785 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,841 psi | 61% | 2648 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,325 psi | 73% | 2805 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,727 psi | 65% | 2707 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 42,047 psi | 66% | 2733 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,087 psi | 60% | 2690 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,558 psi | 75% | 2822 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,426 psi | 71% | 2795 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,123 psi | 74% | 2723 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,320 psi | 62% | 2585 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,772 psi | 69% | 2703 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 53,534 psi | 84% | 2920 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,688 psi | 73% | 2723 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,413 psi | 74% | 2818 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 37,695 psi | 59% | 2641 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 27,340 psi | 43% | 2461 fps | 96.1% |
| Somchem S385 | <<locked>> | 96% | 43,830 psi | 69% | 2799 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 53,098 psi | 83% | 2782 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,587 psi | 75% | 2717 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,308 psi | 68% | 2703 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,859 psi | 69% | 2713 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,882 psi | 56% | 2575 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 34,272 psi | 54% | 2582 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 49,240 psi | 77% | 2831 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,250 psi | 66% | 2700 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,216 psi | 57% | 2641 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 90% | 32,735 psi | 51% | 2621 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,879 psi | 50% | 2500 fps | 96.8% |
| Winchester 748 | <<locked>> | 80% | 49,342 psi | 77% | 2881 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,047 psi | 67% | 2812 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,471 psi | 45% | 2562 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,063 psi | 71% | 2799 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 119 powders for .308 Norma Mag. loaded with the .306 | 160gr | Peregrine VLR-4. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,123 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,123 fps. Accurate 3100 gives the best case fill at 100 %, and 119 of the 119 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 160.0 gr projectile in 0.306" calls for a 1:10.5 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 .306 | 160gr | Peregrine VLR-4 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.