Load Specifications
Load data in caliber .308 Win. with .308 | 143gr | TWENTY-NINE SILENTIO bullet and 68 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Hodgdon H322 and Shooters World AR Plus.
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 1680 | <<locked>> | 84% | 51,822 psi | 86% | 2677 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 52,547 psi | 87% | 2766 fps | 100% |
| Accurate 2460 | <<locked>> | 94% | 51,605 psi | 86% | 2782 fps | 99.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 44,063 psi | 73% | 2707 fps | 99.9% |
| Accurate 2520 | <<locked>> | 98% | 51,953 psi | 86% | 2828 fps | 99% |
| Accurate 4064ᴾ | <<locked>> | 100% | 40,930 psi | 68% | 2674 fps | 98.3% |
| Accurate LT-30 | <<locked>> | 90% | 52,692 psi | 88% | 2694 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 90% | 53,142 psi | 88% | 2707 fps | 99.1% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 52,040 psi | 86% | 2818 fps | 96.3% |
| ADI AR 2207 | <<locked>> | 88% | 52,837 psi | 88% | 2730 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 50,879 psi | 85% | 2795 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 98% | 51,851 psi | 86% | 2789 fps | 97.6% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 52,127 psi | 87% | 2841 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 52,460 psi | 87% | 2890 fps | 97.2% |
| Alliant Reloder-10x | <<locked>> | 94% | 53,098 psi | 88% | 2789 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 54,215 psi | 90% | 2743 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 54,331 psi | 90% | 2730 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 96% | 51,866 psi | 86% | 2743 fps | 98.1% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 52,765 psi | 88% | 2864 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 94% | 52,446 psi | 87% | 2818 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 94% | 53,650 psi | 89% | 2838 fps | 99.5% |
| Hodgdon H4198 | <<locked>> | 86% | 51,416 psi | 85% | 2690 fps | 99.6% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 52,272 psi | 87% | 2835 fps | 97% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 47,094 psi | 78% | 2789 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,706 psi | 54% | 1663 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 50,778 psi | 84% | 2785 fps | 96.5% |
| IMR 3031ᴾ | <<locked>> | 100% | 49,603 psi | 82% | 2838 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 54,375 psi | 90% | 2759 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 51,358 psi | 85% | 2644 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 51,851 psi | 86% | 2789 fps | 97.6% |
| Lovex D073.4 | <<locked>> | 88% | 52,330 psi | 87% | 2799 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 94% | 51,561 psi | 86% | 2782 fps | 98.3% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 49,327 psi | 82% | 2799 fps | 98.7% |
| Lovex S053 | <<locked>> | 84% | 53,388 psi | 89% | 2638 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 53,751 psi | 89% | 2762 fps | 96.6% |
| Lovex S062ᴾ | <<locked>> | 100% | 44,860 psi | 75% | 2690 fps | 96.3% |
| Norma 200 | <<locked>> | 90% | 53,693 psi | 89% | 2776 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 50,444 psi | 84% | 2769 fps | 97.4% |
| Norma 202ᴾ | <<locked>> | 100% | 50,198 psi | 83% | 2789 fps | 99.3% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 54,389 psi | 90% | 2861 fps | 96.7% |
| Ramshot X-Terminator | <<locked>> | 96% | 54,114 psi | 90% | 2792 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,706 psi | 54% | 1703 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 51,532 psi | 86% | 2684 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 51,851 psi | 86% | 2789 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 98% | 51,793 psi | 86% | 2779 fps | 99.2% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 47,558 psi | 79% | 2710 fps | 96.8% |
| Shooters World AR Plus | <<locked>> | 88% | 52,330 psi | 87% | 2799 fps | 98.9% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 49,327 psi | 82% | 2799 fps | 98.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 44,860 psi | 75% | 2690 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 53,069 psi | 88% | 2759 fps | 97.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 53,896 psi | 90% | 2487 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 51,401 psi | 85% | 2799 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 54,259 psi | 90% | 2802 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 50,372 psi | 84% | 2789 fps | 95.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 54,070 psi | 90% | 2746 fps | 99.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 43,410 psi | 72% | 2595 fps | 98.9% |
| Somchem S321 | <<locked>> | 96% | 53,040 psi | 88% | 2831 fps | 98.1% |
| Somchem S335ᴾ | <<locked>> | 100% | 52,170 psi | 87% | 2743 fps | 99.7% |
| Somchem S341ᴾ | <<locked>> | 100% | 53,040 psi | 88% | 2808 fps | 96.2% |
| Vihtavuori N120 | <<locked>> | 88% | 52,866 psi | 88% | 2680 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 54,027 psi | 90% | 2743 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 53,127 psi | 88% | 2743 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 45,165 psi | 75% | 2710 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 47,732 psi | 79% | 2723 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 98% | 52,315 psi | 87% | 2789 fps | 97.7% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 46,093 psi | 77% | 2713 fps | 98.6% |
| Winchester 748ᴾ | <<locked>> | 100% | 53,867 psi | 89% | 2884 fps | 98.7% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 49,443 psi | 82% | 2792 fps | 96.4% |
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 1680 | <<locked>> | 80% | 45,513 psi | 76% | 2582 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 30,124 psi | 50% | 2349 fps | 97.4% |
| Accurate 2460 | <<locked>> | 82% | 34,287 psi | 57% | 2467 fps | 95.6% |
| Accurate 2495 | <<locked>> | 82% | 24,250 psi | 40% | 2264 fps | 95.4% |
| Accurate 2520 | <<locked>> | 86% | 34,171 psi | 57% | 2503 fps | 95.1% |
| Accurate 4064 | <<locked>> | 92% | 31,647 psi | 53% | 2474 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 38,841 psi | 65% | 2457 fps | 98.3% |
| Accurate LT-32 | <<locked>> | 80% | 39,218 psi | 65% | 2464 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 98% | 48,718 psi | 81% | 2766 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 41,147 psi | 68% | 2552 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 36,318 psi | 60% | 2530 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 92% | 43,033 psi | 71% | 2638 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 27,659 psi | 46% | 2365 fps | 98.8% |
| Alliant Power Pro 1200-R | 39 gr | 90% | 45,803 psi | 76% | 2776 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,606 psi | 57% | 2467 fps | 99.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 42,627 psi | 71% | 2562 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,043 psi | 62% | 2444 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 88% | 40,814 psi | 68% | 2549 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 92% | 40,103 psi | 67% | 2644 fps | 95.6% |
| Hodgdon H322 | 34.6 gr | 80% | 33,185 psi | 55% | 2457 fps | 96.6% |
| Hodgdon H335 | <<locked>> | 80% | 33,663 psi | 56% | 2470 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 42,844 psi | 71% | 2546 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 96% | 45,876 psi | 76% | 2726 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 44,193 psi | 73% | 2736 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,178 psi | 40% | 1486 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 44,976 psi | 75% | 2684 fps | 95.2% |
| IMR 3031 | <<locked>> | 82% | 28,195 psi | 47% | 2382 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 36,260 psi | 60% | 2457 fps | 99.9% |
| IMR 4227 | <<locked>> | 80% | 48,298 psi | 80% | 2602 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 43,033 psi | 71% | 2638 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 39,494 psi | 66% | 2579 fps | 96.5% |
| Lovex D073.5 | <<locked>> | 86% | 39,160 psi | 65% | 2569 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 90% | 34,911 psi | 58% | 2533 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 47,529 psi | 79% | 2556 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 47,674 psi | 79% | 2664 fps | 95.2% |
| Lovex S062 | <<locked>> | 98% | 41,945 psi | 70% | 2638 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 39,117 psi | 65% | 2539 fps | 100% |
| Norma 201 | <<locked>> | 94% | 42,061 psi | 70% | 2621 fps | 95.5% |
| Norma 202 | <<locked>> | 86% | 32,416 psi | 54% | 2444 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 96% | 47,805 psi | 79% | 2756 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 92% | 47,718 psi | 79% | 2690 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,062 psi | 40% | 1519 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 48,254 psi | 80% | 2638 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 37,695 psi | 63% | 2533 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 84% | 34,200 psi | 57% | 2444 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 96% | 42,032 psi | 70% | 2612 fps | 95.4% |
| Shooters World AR Plus | 37.2 gr | 80% | 39,494 psi | 66% | 2579 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 34,911 psi | 58% | 2533 fps | 95.4% |
| Shooters World Precision | <<locked>> | 98% | 41,945 psi | 70% | 2638 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 43,134 psi | 72% | 2595 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,874 psi | 73% | 2356 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,941 psi | 61% | 2536 fps | 96.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 35,186 psi | 58% | 2470 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 47,239 psi | 78% | 2733 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 32,938 psi | 55% | 2365 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 30,153 psi | 50% | 2320 fps | 95.4% |
| Somchem S321 | <<locked>> | 88% | 40,611 psi | 67% | 2618 fps | 95.4% |
| Somchem S335 | <<locked>> | 82% | 30,342 psi | 50% | 2326 fps | 95.4% |
| Somchem S341 | <<locked>> | 98% | 49,298 psi | 82% | 2749 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 41,292 psi | 69% | 2513 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 33,243 psi | 55% | 2382 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 80% | 28,906 psi | 48% | 2290 fps | 96.7% |
| Vihtavuori N135 | <<locked>> | 82% | 25,614 psi | 43% | 2280 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 88% | 32,619 psi | 54% | 2428 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 92% | 43,047 psi | 72% | 2635 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 90% | 33,533 psi | 56% | 2464 fps | 95.4% |
| Winchester 748 | <<locked>> | 90% | 38,595 psi | 64% | 2608 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 98% | 46,282 psi | 77% | 2736 fps | 95.6% |
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 68 powders for .308 Win. loaded with the .308 | 143gr | TWENTY-NINE SILENTIO. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,890 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,890 fps. Accurate 2495 gives the best case fill at 100 %, and 68 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 143.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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. Alliant Power Pro 1200-R, Hodgdon H322, Shooters World AR Plus rank at the top here: for .308 Win. with the .308 | 143gr | 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.