Load Specifications
Load data in caliber .308 Win. with .311 | 123gr | Speer FMJ bullet and 54 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H322, Shooters World AR Plus and SNPE Vectan SP 10.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 52,649 psi | 87% | 2917 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 52,620 psi | 87% | 3002 fps | 99.9% |
| Accurate 2460 | <<locked>> | 96% | 51,706 psi | 86% | 3009 fps | 98.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,727 psi | 68% | 2867 fps | 99.2% |
| Accurate 2520ᴾ | <<locked>> | 100% | 51,895 psi | 86% | 3051 fps | 98.1% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,869 psi | 63% | 2825 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 92% | 53,330 psi | 89% | 2930 fps | 99.5% |
| Accurate LT-32 | <<locked>> | 92% | 53,737 psi | 89% | 2940 fps | 98.3% |
| ADI AR 2207 | <<locked>> | 90% | 52,808 psi | 88% | 2976 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 51,140 psi | 85% | 3028 fps | 99.2% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 51,924 psi | 86% | 3012 fps | 96.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 48,718 psi | 81% | 3031 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 52,257 psi | 87% | 3120 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 96% | 53,461 psi | 89% | 3035 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 51,488 psi | 86% | 2940 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 51,808 psi | 86% | 2917 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 98% | 52,127 psi | 87% | 2966 fps | 97% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 49,197 psi | 82% | 3028 fps | 96.5% |
| Hodgdon H322 | <<locked>> | 96% | 52,591 psi | 87% | 3054 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 96% | 54,143 psi | 90% | 3077 fps | 98.9% |
| Hodgdon H4198 | <<locked>> | 88% | 52,040 psi | 86% | 2930 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,097 psi | 53% | 1814 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 46,441 psi | 77% | 3015 fps | 99.3% |
| IMR 4198 | <<locked>> | 94% | 51,721 psi | 86% | 2963 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 52,185 psi | 87% | 2894 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 51,924 psi | 86% | 3012 fps | 96.3% |
| Lovex D073.4 | <<locked>> | 90% | 52,634 psi | 87% | 3031 fps | 98% |
| Lovex D073.5 | <<locked>> | 96% | 51,895 psi | 86% | 3009 fps | 97.3% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 45,614 psi | 76% | 2959 fps | 96.9% |
| Lovex S053 | <<locked>> | 86% | 53,751 psi | 89% | 2884 fps | 100% |
| Norma 200 | <<locked>> | 92% | 53,563 psi | 89% | 3015 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 47,369 psi | 79% | 2963 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,981 psi | 53% | 1857 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 51,953 psi | 86% | 2930 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 52,272 psi | 87% | 3022 fps | 97.8% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 51,517 psi | 86% | 2999 fps | 98.4% |
| Shooters World AR Plus | <<locked>> | 90% | 52,634 psi | 87% | 3031 fps | 98% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 45,614 psi | 76% | 2959 fps | 96.9% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 53,650 psi | 89% | 2989 fps | 96.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 54,375 psi | 90% | 2726 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 51,648 psi | 86% | 3031 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 51,227 psi | 85% | 2992 fps | 99.6% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 51,024 psi | 85% | 2923 fps | 98.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 40,785 psi | 68% | 2756 fps | 97.4% |
| Somchem S321 | <<locked>> | 98% | 53,200 psi | 88% | 3058 fps | 97% |
| Somchem S335ᴾ | <<locked>> | 100% | 49,168 psi | 82% | 2917 fps | 98.8% |
| Vihtavuori N120 | <<locked>> | 90% | 52,794 psi | 88% | 2923 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 53,867 psi | 89% | 2972 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 50,067 psi | 83% | 2927 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 41,916 psi | 70% | 2877 fps | 99.2% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 44,672 psi | 74% | 2887 fps | 97.8% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 52,736 psi | 88% | 3015 fps | 96.5% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,163 psi | 72% | 2871 fps | 96.9% |
| Winchester 748ᴾ | <<locked>> | 100% | 50,618 psi | 84% | 3051 fps | 97% |
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% | 43,163 psi | 72% | 2759 fps | 99.7% |
| Accurate 2015 | <<locked>> | 80% | 28,123 psi | 47% | 2490 fps | 95.1% |
| Accurate 2460 | <<locked>> | 86% | 36,898 psi | 61% | 2726 fps | 95% |
| Accurate 2495 | <<locked>> | 88% | 27,151 psi | 45% | 2543 fps | 95.2% |
| Accurate 2520 | <<locked>> | 92% | 39,073 psi | 65% | 2815 fps | 95.2% |
| Accurate 4064 | <<locked>> | 98% | 35,433 psi | 59% | 2769 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 36,811 psi | 61% | 2618 fps | 96.6% |
| Accurate LT-32 | <<locked>> | 82% | 39,552 psi | 66% | 2674 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 38,769 psi | 64% | 2736 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,200 psi | 57% | 2684 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 98% | 48,805 psi | 81% | 2959 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 25,846 psi | 43% | 2493 fps | 96.7% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 49,023 psi | 81% | 3061 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,460 psi | 54% | 2625 fps | 97.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,176 psi | 67% | 2736 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,099 psi | 58% | 2598 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 92% | 43,569 psi | 72% | 2812 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 98% | 46,166 psi | 77% | 2972 fps | 95.8% |
| Hodgdon H322 | 37.8 gr | 82% | 33,460 psi | 56% | 2664 fps | 95.1% |
| Hodgdon H335 | <<locked>> | 86% | 38,653 psi | 64% | 2789 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 40,582 psi | 67% | 2717 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,641 psi | 39% | 1624 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 31,691 psi | 53% | 2677 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 34,330 psi | 57% | 2625 fps | 99% |
| IMR 4227 | <<locked>> | 80% | 46,166 psi | 77% | 2799 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 48,805 psi | 81% | 2959 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 82% | 39,436 psi | 66% | 2789 fps | 95% |
| Lovex D073.5 | <<locked>> | 90% | 41,989 psi | 70% | 2831 fps | 95% |
| Lovex D073.6 | <<locked>> | 96% | 39,740 psi | 66% | 2841 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 45,179 psi | 75% | 2753 fps | 100% |
| Norma 200 | <<locked>> | 80% | 36,811 psi | 61% | 2710 fps | 99.4% |
| Norma 202 | <<locked>> | 92% | 36,521 psi | 61% | 2743 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,670 psi | 39% | 1667 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 45,832 psi | 76% | 2831 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 40,451 psi | 67% | 2802 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 90% | 38,276 psi | 64% | 2743 fps | 95.4% |
| Shooters World AR Plus | 40.5 gr | 82% | 39,436 psi | 66% | 2789 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 96% | 39,740 psi | 66% | 2841 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 49,995 psi | 83% | 2930 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,800 psi | 69% | 2543 fps | 100% |
| SNPE Vectan SP 10 | 40.4 gr | 82% | 36,941 psi | 61% | 2743 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,054 psi | 55% | 2625 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 37,594 psi | 62% | 2671 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 34,040 psi | 57% | 2605 fps | 95.4% |
| Somchem S321 | <<locked>> | 94% | 46,673 psi | 78% | 2943 fps | 95.5% |
| Somchem S335 | <<locked>> | 88% | 34,156 psi | 57% | 2615 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 38,928 psi | 65% | 2697 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,285 psi | 52% | 2536 fps | 97.3% |
| Vihtavuori N133 | <<locked>> | 82% | 28,964 psi | 48% | 2480 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 88% | 28,892 psi | 48% | 2566 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 94% | 37,101 psi | 62% | 2730 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 96% | 46,398 psi | 77% | 2904 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 96% | 37,956 psi | 63% | 2762 fps | 95.4% |
| Winchester 748 | <<locked>> | 96% | 44,411 psi | 74% | 2936 fps | 95.5% |
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 54 powders for .308 Win. loaded with the .311 | 123gr | Speer FMJ. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,120 fps; across all powders the maximum-charge window runs from 1,814 fps to 3,120 fps. Accurate 2015 gives the best case fill at 100 %, and 54 of the 54 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2495, Accurate 2520 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. Hodgdon H322, Shooters World AR Plus, SNPE Vectan SP 10 rank at the top here: for .308 Win. with the .311 | 123gr | Speer FMJ 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.