Load Specifications
Bullet Manufacturer:TWENTY-NINE
Bullet Weight:161 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:1:10.5
Load data in caliber .308 Norma Mag. with .308 | 161gr | TWENTY-NINE ERTP bullet and 101 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% | 55,259 psi | 87% | 2835 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,491 psi | 85% | 2861 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,898 psi | 88% | 2927 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,681 psi | 89% | 2917 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,426 psi | 71% | 2818 fps | 97.2% |
| Accurate 4064 | <<locked>> | 88% | 54,781 psi | 86% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,853 psi | 86% | 3002 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 54,636 psi | 86% | 2943 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,724 psi | 87% | 2946 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,895 psi | 83% | 2976 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,985 psi | 89% | 2943 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,491 psi | 85% | 2861 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,404 psi | 85% | 3064 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,736 psi | 83% | 2972 fps | 96.1% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,736 psi | 83% | 2972 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,043 psi | 88% | 2966 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,376 psi | 88% | 2989 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,666 psi | 87% | 3058 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 57,232 psi | 90% | 3097 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,953 psi | 81% | 2963 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,946 psi | 67% | 2848 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,443 psi | 76% | 3025 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,259 psi | 85% | 2953 fps | 99.7% |
| Bofors RP3 | <<locked>> | 90% | 56,884 psi | 89% | 2986 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,420 psi | 88% | 2953 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,839 psi | 86% | 2867 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,550 psi | 89% | 2972 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 57,421 psi | 90% | 2995 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 96% | 57,464 psi | 90% | 3054 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 94% | 57,711 psi | 90% | 3015 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 84% | 55,245 psi | 87% | 2953 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,724 psi | 87% | 2979 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,926 psi | 86% | 2986 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,302 psi | 85% | 3035 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 56% | 1824 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,173 psi | 88% | 2953 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,347 psi | 87% | 2933 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,013 psi | 86% | 2923 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,781 psi | 86% | 2904 fps | 98% |
| IMR 4350 | <<locked>> | 98% | 56,956 psi | 89% | 2982 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,839 psi | 86% | 2930 fps | 98% |
| IMR 4831 | <<locked>> | 98% | 55,187 psi | 86% | 2992 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 54,215 psi | 85% | 2963 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,985 psi | 89% | 2943 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,520 psi | 85% | 2917 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,145 psi | 90% | 2917 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,216 psi | 87% | 2923 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,404 psi | 85% | 2923 fps | 99% |
| Lovex S070 | <<locked>> | 96% | 55,550 psi | 87% | 2966 fps | 98.4% |
| Norma 201 | <<locked>> | 86% | 56,623 psi | 89% | 2936 fps | 100% |
| Norma 202 | <<locked>> | 86% | 57,435 psi | 90% | 2936 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,622 psi | 87% | 2972 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,215 psi | 85% | 2979 fps | 96.2% |
| Norma MRPᴾ | <<locked>> | 100% | 47,935 psi | 75% | 2972 fps | 96.7% |
| Norma URP | <<locked>> | 98% | 57,203 psi | 90% | 3041 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 56,478 psi | 89% | 3002 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,202 psi | 88% | 3038 fps | 99% |
| Ramshot TAC | <<locked>> | 84% | 57,246 psi | 90% | 2966 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,014 psi | 89% | 2982 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,711 psi | 90% | 2943 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,318 psi | 57% | 1867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,725 psi | 90% | 2979 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 57,305 psi | 90% | 3061 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,724 psi | 89% | 3091 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,665 psi | 86% | 3025 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 57,696 psi | 90% | 3114 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 84% | 57,682 psi | 90% | 2917 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 57,203 psi | 90% | 2933 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,753 psi | 89% | 2976 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,560 psi | 79% | 2943 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 94% | 56,420 psi | 88% | 2953 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,404 psi | 85% | 2923 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,520 psi | 85% | 2917 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,216 psi | 87% | 2923 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,550 psi | 87% | 2966 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,723 psi | 86% | 2982 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,912 psi | 88% | 2943 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,623 psi | 89% | 2966 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,520 psi | 85% | 2822 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,998 psi | 86% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,650 psi | 86% | 2877 fps | 98% |
| Somchem S335 | <<locked>> | 86% | 57,334 psi | 90% | 2864 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,303 psi | 87% | 2930 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,782 psi | 89% | 2972 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 3045 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,503 psi | 81% | 2923 fps | 96.9% |
| Vihtavuori N130 | <<locked>> | 82% | 57,537 psi | 90% | 2825 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 54,897 psi | 86% | 2805 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 57,246 psi | 90% | 2894 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,491 psi | 85% | 2864 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,752 psi | 86% | 2900 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,130 psi | 88% | 2982 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 84% | 57,464 psi | 90% | 2943 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,057 psi | 88% | 2910 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,114 psi | 86% | 2986 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,529 psi | 74% | 2923 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,188 psi | 88% | 2956 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,998 psi | 85% | 2936 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,725 psi | 90% | 3058 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,479 psi | 60% | 2861 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,420 psi | 88% | 2972 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% | 52,011 psi | 82% | 2789 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,889 psi | 70% | 2717 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,344 psi | 82% | 2874 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,543 psi | 73% | 2743 fps | 95.5% |
| Accurate 3100 | <<locked>> | 96% | 39,494 psi | 62% | 2703 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 42,467 psi | 67% | 2713 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 33,779 psi | 53% | 2589 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 48,080 psi | 75% | 2831 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 40,901 psi | 64% | 2677 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 98% | 49,516 psi | 78% | 2913 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,154 psi | 79% | 2835 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,126 psi | 80% | 2815 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,135 psi | 69% | 2874 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 49,342 psi | 77% | 2913 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 49,342 psi | 77% | 2913 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,799 psi | 64% | 2700 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,700 psi | 68% | 2766 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 82% | 33,692 psi | 53% | 2602 fps | 95.5% |
| Alliant Reloder-17 | 57.7 gr | 80% | 35,404 psi | 55% | 2674 fps | 98% |
| Alliant Reloder-19 | <<locked>> | 98% | 48,704 psi | 76% | 2904 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,457 psi | 46% | 2507 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 92% | 36,390 psi | 57% | 2756 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,543 psi | 75% | 2838 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 40,669 psi | 64% | 2707 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 43,961 psi | 69% | 2730 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,764 psi | 81% | 2822 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,501 psi | 78% | 2861 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,379 psi | 65% | 2710 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 44,106 psi | 69% | 2818 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 88% | 47,790 psi | 75% | 2841 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 48,544 psi | 76% | 2844 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,124 psi | 46% | 2441 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,904 psi | 70% | 2818 fps | 99.8% |
| Hodgdon Superformance | 67.1 gr | 88% | 43,700 psi | 68% | 2835 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,629 psi | 42% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,470 psi | 73% | 2789 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 48,718 psi | 76% | 2835 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,931 psi | 67% | 2710 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,237 psi | 71% | 2733 fps | 96% |
| IMR 4350 | <<locked>> | 90% | 44,266 psi | 69% | 2759 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,931 psi | 67% | 2713 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 32,706 psi | 51% | 2546 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 44,788 psi | 70% | 2799 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 50,154 psi | 79% | 2835 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,747 psi | 75% | 2812 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,674 psi | 75% | 2762 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 42,975 psi | 67% | 2717 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 37,739 psi | 59% | 2605 fps | 95.3% |
| Lovex S070 | <<locked>> | 86% | 40,640 psi | 64% | 2687 fps | 95% |
| Norma 201 | <<locked>> | 80% | 47,036 psi | 74% | 2779 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 47,500 psi | 74% | 2785 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,062 psi | 67% | 2756 fps | 99.1% |
| Norma 204 | <<locked>> | 94% | 50,415 psi | 79% | 2913 fps | 95.3% |
| Norma MRP | <<locked>> | 98% | 44,875 psi | 70% | 2910 fps | 95.9% |
| Norma URP | <<locked>> | 82% | 34,011 psi | 53% | 2592 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 42,902 psi | 67% | 2769 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 40,364 psi | 63% | 2746 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 50,111 psi | 79% | 2848 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,966 psi | 78% | 2867 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,983 psi | 85% | 2887 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,108 psi | 42% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,611 psi | 65% | 2694 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,528 psi | 73% | 2881 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,637 psi | 59% | 2740 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 35,882 psi | 56% | 2664 fps | 95.9% |
| ReloadSwiss RS 70 | 63 gr | 86% | 38,130 psi | 60% | 2730 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 51,242 psi | 80% | 2822 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,744 psi | 70% | 2730 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 38,261 psi | 60% | 2648 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 98% | 47,442 psi | 74% | 2884 fps | 95% |
| Rottweil R 907 | <<locked>> | 86% | 43,961 psi | 69% | 2730 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,739 psi | 59% | 2605 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,747 psi | 75% | 2812 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,975 psi | 67% | 2717 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 40,640 psi | 64% | 2687 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,262 psi | 62% | 2700 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,631 psi | 76% | 2825 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,601 psi | 73% | 2799 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,153 psi | 75% | 2726 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,350 psi | 63% | 2589 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,177 psi | 66% | 2657 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 47,877 psi | 75% | 2726 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,399 psi | 76% | 2818 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 38,914 psi | 61% | 2651 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 28,500 psi | 45% | 2480 fps | 96.7% |
| Somchem S385 | <<locked>> | 96% | 45,078 psi | 71% | 2808 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 54,186 psi | 85% | 2782 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,602 psi | 76% | 2717 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,541 psi | 70% | 2707 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,991 psi | 71% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,101 psi | 58% | 2585 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 35,462 psi | 56% | 2595 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 50,401 psi | 79% | 2835 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,439 psi | 68% | 2707 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 34,896 psi | 55% | 2592 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 88% | 31,908 psi | 50% | 2585 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,808 psi | 51% | 2510 fps | 97.2% |
| Winchester 748 | <<locked>> | 80% | 50,575 psi | 79% | 2884 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 44,106 psi | 69% | 2818 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 92% | 29,588 psi | 46% | 2589 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,267 psi | 73% | 2805 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 101 powders for .308 Norma Mag. loaded with the .308 | 161gr | TWENTY-NINE ERTP. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,114 fps; across all powders the maximum-charge window runs from 1,824 fps to 3,114 fps. Accurate 3100 gives the best case fill at 100 %, and 101 of the 101 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 161.0 gr projectile in 0.308" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 | 161gr | TWENTY-NINE ERTP 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.