Load Specifications
Bullet:.308 | 165gr | Barnes MRX BT
Bullet Manufacturer:Barnes
Bullet Weight:165 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.308 Norma Mag. load data
Case Length (l3):2.559"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:86.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:12.0
Load data in caliber .308 Norma Mag. with .308 | 165gr | Barnes MRX BT 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.
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% | 55,738 psi | 87% | 2815 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,781 psi | 86% | 2841 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,565 psi | 89% | 2910 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,551 psi | 90% | 2910 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,977 psi | 72% | 2808 fps | 97.7% |
| Accurate 4064 | <<locked>> | 88% | 54,926 psi | 86% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,753 psi | 87% | 2992 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 55,172 psi | 86% | 2930 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,289 psi | 88% | 2930 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,766 psi | 84% | 2972 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,551 psi | 90% | 2927 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,274 psi | 87% | 2844 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,332 psi | 87% | 3054 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,768 psi | 89% | 2953 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,130 psi | 90% | 2976 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,811 psi | 89% | 3051 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,360 psi | 85% | 3028 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,765 psi | 83% | 2959 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,569 psi | 68% | 2838 fps | 99.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,371 psi | 77% | 3022 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,274 psi | 87% | 2946 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 57,493 psi | 90% | 2969 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,246 psi | 90% | 2946 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,448 psi | 87% | 2854 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,319 psi | 90% | 2956 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,433 psi | 85% | 2927 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 54,766 psi | 86% | 2989 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 92% | 55,129 psi | 86% | 2953 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 84% | 55,753 psi | 87% | 2940 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,898 psi | 89% | 2972 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,811 psi | 87% | 2976 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,114 psi | 86% | 3028 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,665 psi | 56% | 1808 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,043 psi | 89% | 2940 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,072 psi | 88% | 2917 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,854 psi | 88% | 2917 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,477 psi | 87% | 2894 fps | 98.4% |
| IMR 4350 | <<locked>> | 96% | 54,302 psi | 85% | 2920 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,550 psi | 87% | 2923 fps | 98.4% |
| IMR 4831 | <<locked>> | 98% | 56,159 psi | 88% | 2982 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 54,969 psi | 86% | 2953 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,551 psi | 90% | 2927 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,187 psi | 86% | 2900 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,447 psi | 85% | 2854 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,622 psi | 87% | 2907 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,172 psi | 86% | 2917 fps | 99.3% |
| Lovex S070 | <<locked>> | 96% | 56,086 psi | 88% | 2953 fps | 98.7% |
| Norma 201 | <<locked>> | 86% | 57,232 psi | 90% | 2920 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,389 psi | 85% | 2871 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,376 psi | 88% | 2963 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,158 psi | 86% | 2972 fps | 96.8% |
| Norma MRPᴾ | <<locked>> | 100% | 48,892 psi | 77% | 2969 fps | 97.4% |
| Norma URP | <<locked>> | 96% | 54,491 psi | 85% | 2976 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 57,305 psi | 90% | 2989 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,203 psi | 90% | 3031 fps | 99.3% |
| Ramshot TAC | <<locked>> | 82% | 54,186 psi | 85% | 2897 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,983 psi | 85% | 2913 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,289 psi | 57% | 1850 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,795 psi | 86% | 2917 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,244 psi | 85% | 2989 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,143 psi | 85% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,651 psi | 87% | 3015 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,839 psi | 86% | 3048 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 54,389 psi | 85% | 2844 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,215 psi | 85% | 2867 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,363 psi | 90% | 2963 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,593 psi | 87% | 2943 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,474 psi | 81% | 2936 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 94% | 57,246 psi | 90% | 2946 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,172 psi | 86% | 2917 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,187 psi | 86% | 2900 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,622 psi | 87% | 2907 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,086 psi | 88% | 2953 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,506 psi | 87% | 2969 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,521 psi | 89% | 2933 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,116 psi | 90% | 2949 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,056 psi | 86% | 2805 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,767 psi | 87% | 2808 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,114 psi | 86% | 2867 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,995 psi | 80% | 2930 fps | 96.4% |
| Somchem S335 | <<locked>> | 84% | 54,476 psi | 85% | 2802 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,275 psi | 88% | 2920 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,479 psi | 90% | 2956 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,985 psi | 89% | 3035 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,214 psi | 82% | 2917 fps | 97.5% |
| Vihtavuori N133 | <<locked>> | 84% | 55,477 psi | 87% | 2789 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,346 psi | 85% | 2831 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,013 psi | 86% | 2848 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,448 psi | 87% | 2884 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,188 psi | 90% | 2976 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 54,360 psi | 85% | 2874 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,724 psi | 89% | 2894 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,999 psi | 88% | 2979 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,370 psi | 76% | 2917 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,319 psi | 90% | 2949 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,868 psi | 86% | 2923 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,027 psi | 86% | 2995 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,827 psi | 61% | 2858 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,479 psi | 90% | 2959 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% | 52,446 psi | 82% | 2772 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,846 psi | 70% | 2694 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,707 psi | 83% | 2854 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,903 psi | 69% | 2677 fps | 95.2% |
| Accurate 3100 | <<locked>> | 94% | 37,173 psi | 58% | 2631 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 42,467 psi | 67% | 2690 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 33,866 psi | 53% | 2575 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 48,515 psi | 76% | 2818 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 41,278 psi | 65% | 2664 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 96% | 47,065 psi | 74% | 2851 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,691 psi | 79% | 2822 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,822 psi | 81% | 2799 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,599 psi | 70% | 2864 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,118 psi | 64% | 2687 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,048 psi | 69% | 2753 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,749 psi | 50% | 2530 fps | 95.1% |
| Alliant Reloder-17 | 58.6 gr | 80% | 35,607 psi | 56% | 2661 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,340 psi | 73% | 2841 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,414 psi | 46% | 2490 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,185 psi | 54% | 2680 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,993 psi | 75% | 2825 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 40,872 psi | 64% | 2690 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 44,367 psi | 70% | 2723 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,054 psi | 82% | 2805 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,908 psi | 78% | 2844 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,597 psi | 65% | 2697 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 86% | 41,829 psi | 66% | 2753 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 86% | 45,179 psi | 71% | 2772 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 49,023 psi | 77% | 2828 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,196 psi | 46% | 2431 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,368 psi | 71% | 2805 fps | 99.9% |
| Hodgdon Superformance | 68.2 gr | 88% | 44,309 psi | 69% | 2828 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,542 psi | 42% | 1614 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,949 psi | 74% | 2779 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 49,139 psi | 77% | 2815 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,381 psi | 68% | 2703 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,614 psi | 71% | 2723 fps | 96.6% |
| IMR 4350 | <<locked>> | 88% | 42,192 psi | 66% | 2700 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,596 psi | 64% | 2644 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 32,822 psi | 51% | 2530 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 45,208 psi | 71% | 2785 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 50,691 psi | 79% | 2822 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,080 psi | 75% | 2792 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,138 psi | 75% | 2753 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 43,250 psi | 68% | 2700 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 37,695 psi | 59% | 2589 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 40,770 psi | 64% | 2674 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 47,355 psi | 74% | 2766 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,935 psi | 75% | 2769 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,439 psi | 68% | 2740 fps | 99.3% |
| Norma 204 | <<locked>> | 92% | 47,979 psi | 75% | 2851 fps | 95.2% |
| Norma MRP | <<locked>> | 96% | 42,525 psi | 67% | 2841 fps | 95.6% |
| Norma URP | <<locked>> | 82% | 34,243 psi | 54% | 2579 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 43,323 psi | 68% | 2756 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 38,043 psi | 60% | 2677 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 50,720 psi | 79% | 2838 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,430 psi | 79% | 2854 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,977 psi | 42% | 1654 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,829 psi | 66% | 2680 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,094 psi | 74% | 2867 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,927 psi | 59% | 2730 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,649 psi | 53% | 2589 fps | 95.4% |
| ReloadSwiss RS 70 | 62.5 gr | 84% | 35,868 psi | 56% | 2657 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 51,184 psi | 80% | 2799 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,005 psi | 71% | 2713 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 38,435 psi | 60% | 2635 fps | 99% |
| Rottweil R 904 | <<locked>> | 98% | 52,054 psi | 82% | 2887 fps | 95% |
| Rottweil R 905 | <<locked>> | 98% | 48,327 psi | 76% | 2881 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 86% | 44,367 psi | 70% | 2723 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,695 psi | 59% | 2589 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,080 psi | 75% | 2792 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,250 psi | 68% | 2700 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 40,770 psi | 64% | 2674 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,610 psi | 62% | 2687 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,168 psi | 77% | 2815 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,992 psi | 74% | 2785 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,660 psi | 76% | 2713 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,727 psi | 64% | 2575 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,322 psi | 66% | 2644 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,863 psi | 75% | 2874 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 48,240 psi | 76% | 2710 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,805 psi | 76% | 2805 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 39,146 psi | 61% | 2638 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 28,543 psi | 45% | 2467 fps | 97.2% |
| Somchem S385 | <<locked>> | 94% | 42,757 psi | 67% | 2743 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 49,168 psi | 77% | 2700 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,020 psi | 71% | 2690 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,440 psi | 71% | 2700 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,318 psi | 58% | 2572 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 33,315 psi | 52% | 2523 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 50,908 psi | 80% | 2818 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,743 psi | 69% | 2690 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,779 psi | 51% | 2523 fps | 95% |
| Vihtavuori N555 | <<locked>> | 88% | 32,155 psi | 50% | 2572 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,880 psi | 52% | 2497 fps | 97.7% |
| Winchester 748 | <<locked>> | 80% | 51,126 psi | 80% | 2867 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,829 psi | 66% | 2753 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,702 psi | 43% | 2510 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,688 psi | 73% | 2792 fps | 99.9% |
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 99 powders for .308 Norma Mag. loaded with the .308 | 165gr | Barnes MRX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,054 fps; across all powders the maximum-charge window runs from 1,808 fps to 3,054 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 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 165.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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 | 165gr | Barnes MRX BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.