Load Specifications
Bullet Manufacturer:TWENTY-NINE
Bullet Weight:178 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:1:11.0
Load data in caliber .308 Norma Mag. with .308 | 178gr | TWENTY-NINE SILENTIO bullet and 107 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-16 and Hodgdon Superformance.
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 2495 | <<locked>> | 84% | 54,679 psi | 86% | 2717 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,231 psi | 88% | 2782 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,168 psi | 77% | 2759 fps | 98.8% |
| Accurate 4064 | <<locked>> | 86% | 54,853 psi | 86% | 2769 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,129 psi | 86% | 2867 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 53,548 psi | 84% | 2946 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 84% | 57,609 psi | 90% | 2844 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,347 psi | 87% | 2802 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 2907 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,478 psi | 89% | 2792 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,360 psi | 85% | 2923 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,333 psi | 88% | 2904 fps | 97.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,333 psi | 88% | 2904 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,941 psi | 88% | 2825 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,260 psi | 88% | 2844 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,043 psi | 88% | 2923 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,363 psi | 90% | 2953 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 2894 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,950 psi | 77% | 2835 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,151 psi | 72% | 2779 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,422 psi | 63% | 2690 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,736 psi | 83% | 2966 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,012 psi | 85% | 2812 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 56,768 psi | 89% | 2841 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,950 psi | 77% | 2835 fps | 96.7% |
| Bofors RP7 | <<locked>> | 92% | 56,231 psi | 88% | 2822 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,682 psi | 90% | 2769 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,304 psi | 88% | 2825 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,450 psi | 90% | 2861 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 57,711 psi | 90% | 2923 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 92% | 57,595 psi | 90% | 2881 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 82% | 54,882 psi | 86% | 2805 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,260 psi | 88% | 2848 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,853 psi | 86% | 2841 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,940 psi | 85% | 2900 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,042 psi | 56% | 1732 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,014 psi | 88% | 2808 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,317 psi | 87% | 2782 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,911 psi | 86% | 2785 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,244 psi | 85% | 2766 fps | 98.7% |
| IMR 4350 | <<locked>> | 96% | 56,855 psi | 89% | 2851 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,621 psi | 86% | 2799 fps | 98.7% |
| IMR 4831 | <<locked>> | 96% | 55,753 psi | 87% | 2861 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,740 psi | 90% | 2874 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 55,956 psi | 88% | 2835 fps | 96% |
| IMR 8208 XBR | <<locked>> | 82% | 56,478 psi | 89% | 2792 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,476 psi | 85% | 2772 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,681 psi | 89% | 2772 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,926 psi | 86% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,696 psi | 90% | 2841 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 55,477 psi | 87% | 2831 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,785 psi | 64% | 2608 fps | 97.1% |
| Norma 201 | <<locked>> | 84% | 56,420 psi | 88% | 2789 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,072 psi | 89% | 2785 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,550 psi | 87% | 2831 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,041 psi | 85% | 2848 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 51,779 psi | 81% | 2917 fps | 98.5% |
| Norma URP | <<locked>> | 96% | 57,682 psi | 90% | 2907 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,231 psi | 88% | 2858 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,347 psi | 88% | 2907 fps | 99.6% |
| Ramshot TAC | <<locked>> | 82% | 56,492 psi | 89% | 2818 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,608 psi | 89% | 2835 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,767 psi | 58% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,435 psi | 90% | 2841 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,188 psi | 90% | 2913 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,000 psi | 89% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,071 psi | 86% | 2890 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,551 psi | 90% | 2976 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 57,276 psi | 90% | 2766 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,043 psi | 89% | 2792 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,579 psi | 89% | 2831 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,665 psi | 86% | 2822 fps | 96.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,650 psi | 86% | 2881 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 92% | 56,231 psi | 88% | 2822 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,696 psi | 90% | 2841 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,476 psi | 85% | 2772 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,926 psi | 86% | 2779 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,477 psi | 87% | 2831 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,723 psi | 86% | 2844 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,288 psi | 87% | 2799 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,173 psi | 88% | 2818 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,348 psi | 90% | 2720 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,679 psi | 86% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,244 psi | 85% | 2746 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,157 psi | 85% | 2874 fps | 97.7% |
| Somchem S335 | <<locked>> | 84% | 57,000 psi | 89% | 2720 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,969 psi | 86% | 2789 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,768 psi | 89% | 2831 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 56,637 psi | 89% | 2818 fps | 95.9% |
| Somchem S365 | <<locked>> | 98% | 56,550 psi | 89% | 2907 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,245 psi | 87% | 2854 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 82% | 54,636 psi | 86% | 2661 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,159 psi | 90% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,157 psi | 85% | 2720 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,462 psi | 85% | 2756 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,246 psi | 88% | 2848 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,718 psi | 75% | 2720 fps | 96.7% |
| Vihtavuori N530 | <<locked>> | 82% | 56,971 psi | 89% | 2792 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,912 psi | 88% | 2766 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,303 psi | 87% | 2854 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,764 psi | 81% | 2858 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,144 psi | 88% | 2822 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,551 psi | 90% | 2841 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,244 psi | 85% | 2867 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,568 psi | 65% | 2822 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,173 psi | 88% | 2828 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,779 psi | 81% | 2792 fps | 96.9% |
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 2495 | <<locked>> | 80% | 48,153 psi | 75% | 2628 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,296 psi | 73% | 2618 fps | 96.6% |
| Accurate 3100 | <<locked>> | 90% | 34,954 psi | 55% | 2484 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 45,600 psi | 71% | 2631 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,084 psi | 53% | 2477 fps | 96.8% |
| Accurate High Country | <<locked>> | 98% | 49,908 psi | 78% | 2884 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 50,865 psi | 80% | 2743 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,221 psi | 68% | 2598 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 94% | 46,485 psi | 73% | 2736 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,968 psi | 83% | 2743 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,253 psi | 74% | 2802 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,340 psi | 73% | 2736 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,340 psi | 73% | 2736 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,424 psi | 68% | 2621 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,456 psi | 73% | 2687 fps | 99.7% |
| Alliant Reloder-16 | 52.8 gr | 80% | 33,765 psi | 53% | 2490 fps | 96.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,000 psi | 60% | 2615 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,745 psi | 72% | 2726 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,948 psi | 72% | 2776 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,905 psi | 44% | 2352 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,679 psi | 56% | 2575 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 86% | 31,952 psi | 50% | 2523 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,647 psi | 79% | 2759 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 43,555 psi | 68% | 2631 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 45,948 psi | 72% | 2776 fps | 95.9% |
| Bofors RP7 | <<locked>> | 82% | 41,292 psi | 65% | 2556 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,375 psi | 85% | 2723 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,750 psi | 83% | 2772 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,092 psi | 69% | 2641 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 82% | 38,682 psi | 61% | 2582 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 84% | 44,802 psi | 70% | 2661 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 51,445 psi | 81% | 2753 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,328 psi | 49% | 2392 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,819 psi | 75% | 2733 fps | 100% |
| Hodgdon Superformance | 63.1 gr | 84% | 40,538 psi | 64% | 2648 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,021 psi | 42% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,371 psi | 77% | 2707 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,895 psi | 81% | 2736 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,455 psi | 71% | 2631 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,906 psi | 75% | 2661 fps | 97.7% |
| IMR 4350 | <<locked>> | 86% | 41,727 psi | 65% | 2589 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,132 psi | 63% | 2533 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 33,040 psi | 52% | 2438 fps | 96.5% |
| IMR 4895 | <<locked>> | 80% | 47,659 psi | 75% | 2717 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,678 psi | 83% | 2782 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 52,968 psi | 83% | 2743 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,966 psi | 80% | 2720 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,328 psi | 79% | 2677 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,759 psi | 72% | 2635 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,739 psi | 59% | 2487 fps | 96.5% |
| Lovex S070 | <<locked>> | 82% | 38,261 psi | 60% | 2516 fps | 95.4% |
| Lovex S071 | <<locked>> | 96% | 35,853 psi | 56% | 2503 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 50,009 psi | 78% | 2694 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,285 psi | 79% | 2690 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,832 psi | 72% | 2677 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 47,239 psi | 74% | 2730 fps | 95.8% |
| Norma MRP | <<locked>> | 92% | 39,494 psi | 62% | 2674 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 34,127 psi | 53% | 2474 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 45,992 psi | 72% | 2697 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 35,476 psi | 56% | 2516 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 53,040 psi | 83% | 2766 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,866 psi | 83% | 2779 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,369 psi | 43% | 1585 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,208 psi | 69% | 2621 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,908 psi | 78% | 2802 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,393 psi | 63% | 2674 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,779 psi | 53% | 2493 fps | 96.3% |
| ReloadSwiss RS 70 | 57.8 gr | 80% | 33,344 psi | 52% | 2493 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 53,954 psi | 85% | 2720 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,558 psi | 75% | 2648 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,944 psi | 64% | 2579 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 96% | 51,372 psi | 81% | 2769 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 94% | 44,628 psi | 70% | 2707 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 82% | 41,292 psi | 65% | 2556 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,739 psi | 59% | 2487 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,966 psi | 80% | 2720 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,759 psi | 72% | 2635 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,261 psi | 60% | 2516 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,047 psi | 66% | 2628 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,779 psi | 81% | 2746 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,429 psi | 77% | 2717 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,894 psi | 80% | 2631 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,801 psi | 67% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,305 psi | 62% | 2480 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,208 psi | 69% | 2700 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 50,676 psi | 79% | 2631 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,561 psi | 81% | 2736 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,655 psi | 65% | 2582 fps | 99.7% |
| Somchem S361 | <<locked>> | 96% | 52,837 psi | 83% | 2759 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 30,719 psi | 48% | 2431 fps | 98.7% |
| Somchem S385 | <<locked>> | 90% | 39,943 psi | 63% | 2585 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 51,372 psi | 81% | 2618 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,558 psi | 75% | 2615 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,703 psi | 75% | 2625 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,523 psi | 62% | 2513 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,520 psi | 56% | 2477 fps | 97% |
| Vihtavuori N165 | <<locked>> | 96% | 41,858 psi | 66% | 2612 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 53,301 psi | 84% | 2740 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,108 psi | 72% | 2621 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,085 psi | 55% | 2480 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 82% | 28,485 psi | 45% | 2372 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,027 psi | 55% | 2454 fps | 98.9% |
| Winchester 748 | <<locked>> | 80% | 53,911 psi | 84% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 38,856 psi | 61% | 2582 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,266 psi | 41% | 2372 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,313 psi | 77% | 2723 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,223 psi | 71% | 2680 fps | 95.3% |
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 107 powders for .308 Norma Mag. loaded with the .308 | 178gr | TWENTY-NINE SILENTIO. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,976 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,976 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 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 178.0 gr projectile in 0.308" calls for a 1:11.0 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, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for .308 Norma Mag. with the .308 | 178gr | TWENTY-NINE SILENTIO 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.