Load Specifications
Load data in caliber 7.5 x 54 mm MAS with .310 | 123gr | Speer Gold Dot bullet and 49 powders. The key underlying parameters are shown in the table above.
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: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 48,370 psi | 88% | 2838 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 49,356 psi | 90% | 2936 fps | 99.8% |
| Accurate 2460 | <<locked>> | 92% | 48,066 psi | 87% | 2936 fps | 98% |
| Accurate 2495ᴾ | <<locked>> | 100% | 44,092 psi | 80% | 2910 fps | 99.6% |
| Accurate 2520 | <<locked>> | 96% | 48,283 psi | 88% | 2979 fps | 97.7% |
| Accurate 4064ᴾ | <<locked>> | 100% | 40,930 psi | 74% | 2871 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 88% | 49,327 psi | 90% | 2858 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 88% | 49,748 psi | 90% | 2867 fps | 97.9% |
| ADI AR 2207 | <<locked>> | 86% | 49,211 psi | 89% | 2907 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 47,253 psi | 86% | 2953 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 96% | 48,515 psi | 88% | 2943 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 98% | 48,704 psi | 88% | 3015 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 90% | 47,007 psi | 85% | 2917 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 84% | 47,703 psi | 87% | 2867 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 47,877 psi | 87% | 2844 fps | 99.2% |
| Hodgdon Benchmark | <<locked>> | 94% | 48,776 psi | 89% | 2900 fps | 96.6% |
| Hodgdon BL-C2 | <<locked>> | 98% | 49,081 psi | 89% | 3012 fps | 96.7% |
| Hodgdon H322 | <<locked>> | 92% | 48,892 psi | 89% | 2979 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 90% | 46,934 psi | 85% | 2943 fps | 98% |
| Hodgdon H4198 | <<locked>> | 84% | 48,298 psi | 88% | 2858 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,648 psi | 59% | 1827 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 49,371 psi | 90% | 3054 fps | 99.7% |
| IMR 4198 | <<locked>> | 90% | 48,486 psi | 88% | 2900 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 48,515 psi | 88% | 2943 fps | 95.8% |
| Lovex D073.4 | <<locked>> | 86% | 48,559 psi | 88% | 2953 fps | 97.5% |
| Lovex D073.5 | <<locked>> | 92% | 48,051 psi | 87% | 2933 fps | 96.8% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 49,182 psi | 89% | 3005 fps | 97.8% |
| Norma 200 | <<locked>> | 86% | 47,021 psi | 85% | 2897 fps | 100% |
| Norma 202 | <<locked>> | 98% | 47,166 psi | 86% | 2949 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,547 psi | 59% | 1870 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 48,544 psi | 88% | 2949 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 96% | 48,544 psi | 88% | 2936 fps | 98.1% |
| Shooters World AR Plus | <<locked>> | 86% | 48,559 psi | 88% | 2953 fps | 97.5% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 49,182 psi | 89% | 3005 fps | 97.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 48,240 psi | 88% | 2635 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 48,066 psi | 87% | 2956 fps | 98.1% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 47,921 psi | 87% | 2927 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 47,659 psi | 86% | 2858 fps | 98% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 43,192 psi | 78% | 2792 fps | 98.2% |
| Somchem S321 | <<locked>> | 94% | 49,603 psi | 90% | 2986 fps | 96.5% |
| Somchem S335 | <<locked>> | 98% | 48,878 psi | 89% | 2904 fps | 98.9% |
| Vihtavuori N120 | <<locked>> | 86% | 49,255 psi | 89% | 2858 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 47,674 psi | 87% | 2864 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 49,835 psi | 90% | 2910 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 44,904 psi | 81% | 2917 fps | 99.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 47,616 psi | 86% | 2927 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 96% | 49,037 psi | 89% | 2943 fps | 96% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 46,195 psi | 84% | 2913 fps | 97.7% |
| Winchester 748 | <<locked>> | 96% | 47,152 psi | 86% | 2979 fps | 96.5% |
Start Load - Barrel Length: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 45,295 psi | 82% | 2789 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 29,747 psi | 54% | 2520 fps | 95.9% |
| Accurate 2460 | <<locked>> | 84% | 36,666 psi | 67% | 2707 fps | 95.1% |
| Accurate 2495 | <<locked>> | 86% | 27,441 psi | 50% | 2526 fps | 95.4% |
| Accurate 2520 | <<locked>> | 90% | 39,233 psi | 71% | 2805 fps | 95.5% |
| Accurate 4064 | <<locked>> | 94% | 33,721 psi | 61% | 2703 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 38,595 psi | 70% | 2651 fps | 97.3% |
| Accurate LT-32 | <<locked>> | 80% | 38,972 psi | 71% | 2654 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 40,872 psi | 74% | 2762 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 36,187 psi | 66% | 2720 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 94% | 45,469 psi | 83% | 2884 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 27,412 psi | 50% | 2533 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,287 psi | 62% | 2651 fps | 98.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 42,322 psi | 77% | 2766 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,811 psi | 67% | 2628 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 90% | 43,207 psi | 78% | 2795 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 94% | 42,844 psi | 78% | 2894 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 33,127 psi | 60% | 2641 fps | 95.2% |
| Hodgdon H335 | <<locked>> | 82% | 35,737 psi | 65% | 2707 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 42,569 psi | 77% | 2749 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,902 psi | 43% | 1631 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 31,575 psi | 57% | 2661 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 36,114 psi | 66% | 2654 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 94% | 45,469 psi | 83% | 2884 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 39,218 psi | 71% | 2769 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 88% | 41,669 psi | 76% | 2812 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 94% | 39,871 psi | 72% | 2828 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 38,943 psi | 71% | 2740 fps | 99.7% |
| Norma 202 | <<locked>> | 90% | 36,564 psi | 66% | 2730 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,960 psi | 43% | 1673 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 40,074 psi | 73% | 2779 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 88% | 38,101 psi | 69% | 2723 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 39,218 psi | 71% | 2769 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 94% | 39,871 psi | 72% | 2828 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,323 psi | 79% | 2559 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,738 psi | 67% | 2723 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,795 psi | 63% | 2657 fps | 96.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 37,275 psi | 68% | 2654 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 33,852 psi | 61% | 2592 fps | 95.6% |
| Somchem S321 | <<locked>> | 92% | 46,093 psi | 84% | 2920 fps | 95.6% |
| Somchem S335 | <<locked>> | 86% | 33,982 psi | 62% | 2598 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 40,930 psi | 74% | 2720 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,909 psi | 60% | 2562 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 80% | 28,601 psi | 52% | 2457 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 86% | 28,906 psi | 52% | 2552 fps | 95.8% |
| Vihtavuori N140 | <<locked>> | 90% | 34,751 psi | 63% | 2661 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 94% | 45,788 psi | 83% | 2884 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 94% | 37,869 psi | 69% | 2746 fps | 95.6% |
| Winchester 748 | <<locked>> | 94% | 44,106 psi | 80% | 2920 fps | 95.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 49 powders for 7.5 x 54 mm MAS loaded with the .310 | 123gr | Speer Gold Dot. IMR 3031 delivers the highest muzzle velocity at 3,054 fps; across all powders the maximum-charge window runs from 1,827 fps to 3,054 fps. Accurate 2495 gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.31" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Hodgdon TrailBoss 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.