Load Specifications
Load data in caliber 7.5 x 54 mm MAS with .308 | 165gr | Geco STAR bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 52, Hodgdon LEVERevolution and ReloadSwiss RS 60.
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 2015 | <<locked>> | 88% | 47,485 psi | 86% | 2523 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 48,805 psi | 89% | 2579 fps | 99.9% |
| Accurate 2495 | <<locked>> | 96% | 49,632 psi | 90% | 2612 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 46,572 psi | 85% | 2582 fps | 99.7% |
| Accurate 4064 | <<locked>> | 98% | 49,255 psi | 89% | 2641 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 48,631 psi | 88% | 2480 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 49,008 psi | 89% | 2497 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 92% | 49,617 psi | 90% | 2631 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 96% | 47,732 psi | 87% | 2579 fps | 97.1% |
| ADI AR 2219 | <<locked>> | 82% | 47,790 psi | 87% | 2579 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 49,124 psi | 89% | 2595 fps | 99% |
| Alliant AR-Comp | <<locked>> | 90% | 47,747 psi | 87% | 2592 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 46,992 psi | 85% | 2638 fps | 98.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 49,008 psi | 89% | 2717 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 49,168 psi | 89% | 2644 fps | 98.8% |
| Alliant Reloder-10x | <<locked>> | 84% | 47,630 psi | 86% | 2533 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 46,920 psi | 85% | 2608 fps | 97.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 46,369 psi | 84% | 2677 fps | 97.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 47,268 psi | 86% | 2477 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 48,979 psi | 89% | 2638 fps | 97% |
| Bofors RP3 | <<locked>> | 98% | 49,052 psi | 89% | 2654 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 48,849 psi | 89% | 2549 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 90% | 47,108 psi | 85% | 2615 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 88% | 49,023 psi | 89% | 2697 fps | 97.6% |
| Hodgdon H322 | <<locked>> | 86% | 49,835 psi | 90% | 2608 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 47,326 psi | 86% | 2582 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 96% | 47,718 psi | 87% | 2608 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 90% | 46,775 psi | 85% | 2592 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 48,022 psi | 87% | 2661 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,750 psi | 61% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 48,588 psi | 88% | 2602 fps | 98.4% |
| IMR 3031 | <<locked>> | 92% | 48,515 psi | 88% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 46,920 psi | 85% | 2559 fps | 97.2% |
| IMR 4198 | <<locked>> | 84% | 48,936 psi | 89% | 2510 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 48,022 psi | 87% | 2641 fps | 98% |
| IMR 8208 XBR | <<locked>> | 90% | 49,124 psi | 89% | 2595 fps | 99% |
| Lovex D073.5 | <<locked>> | 86% | 48,559 psi | 88% | 2582 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 92% | 47,688 psi | 87% | 2612 fps | 99.7% |
| Lovex S060 | <<locked>> | 90% | 47,659 psi | 86% | 2530 fps | 97.8% |
| Lovex S062 | <<locked>> | 96% | 49,240 psi | 89% | 2612 fps | 99.1% |
| Norma 201 | <<locked>> | 92% | 48,153 psi | 87% | 2582 fps | 98.9% |
| Norma 202 | <<locked>> | 92% | 48,617 psi | 88% | 2598 fps | 100% |
| Norma 203B | <<locked>> | 96% | 49,269 psi | 89% | 2651 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 96% | 49,632 psi | 90% | 2671 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 90% | 48,588 psi | 88% | 2621 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 47,500 psi | 86% | 2549 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,156 psi | 62% | 1631 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 48,950 psi | 89% | 2589 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 49,458 psi | 90% | 2717 fps | 97.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 49,647 psi | 90% | 2746 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 90% | 49,298 psi | 89% | 2579 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 94% | 48,414 psi | 88% | 2579 fps | 98.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 48,617 psi | 88% | 2638 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 47,688 psi | 87% | 2612 fps | 99.7% |
| Shooters World Precision | <<locked>> | 96% | 49,240 psi | 89% | 2612 fps | 99.1% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 49,037 psi | 89% | 2556 fps | 98.7% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 48,167 psi | 87% | 2585 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 47,834 psi | 87% | 2651 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 48,646 psi | 88% | 2552 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 47,979 psi | 87% | 2602 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 47,863 psi | 87% | 2503 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 47,050 psi | 85% | 2500 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 46,920 psi | 85% | 2582 fps | 98.9% |
| Somchem S335 | <<locked>> | 92% | 49,603 psi | 90% | 2546 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 46,847 psi | 85% | 2569 fps | 97.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 49,777 psi | 90% | 2644 fps | 98.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,302 psi | 64% | 2457 fps | 96.3% |
| Vihtavuori N130 | <<locked>> | 86% | 47,892 psi | 87% | 2490 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 47,732 psi | 87% | 2500 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 47,181 psi | 86% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 49,182 psi | 89% | 2582 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,022 psi | 87% | 2582 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 90% | 49,603 psi | 90% | 2595 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 94% | 47,195 psi | 86% | 2572 fps | 99.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 43,888 psi | 80% | 2520 fps | 97.3% |
| Winchester 748 | <<locked>> | 90% | 48,051 psi | 87% | 2635 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 92% | 47,398 psi | 86% | 2612 fps | 98.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 36,680 psi | 67% | 2343 fps | 99.9% |
| Accurate 2460 | <<locked>> | 80% | 39,711 psi | 72% | 2428 fps | 99.1% |
| Accurate 2495 | <<locked>> | 80% | 28,863 psi | 52% | 2234 fps | 99.1% |
| Accurate 2520 | <<locked>> | 80% | 35,186 psi | 64% | 2375 fps | 97.8% |
| Accurate 4064 | <<locked>> | 80% | 27,383 psi | 50% | 2211 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 80% | 45,774 psi | 83% | 2438 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,151 psi | 84% | 2454 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 38,464 psi | 70% | 2428 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 92% | 42,047 psi | 76% | 2480 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 44,585 psi | 81% | 2526 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,810 psi | 65% | 2349 fps | 96.1% |
| Alliant AR-Comp | <<locked>> | 80% | 33,982 psi | 62% | 2362 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,060 psi | 75% | 2530 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 42,554 psi | 77% | 2592 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 35,563 psi | 65% | 2395 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 41,989 psi | 76% | 2444 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 38,783 psi | 70% | 2457 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 94% | 37,913 psi | 69% | 2503 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,367 psi | 81% | 2431 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 42,931 psi | 78% | 2533 fps | 95.5% |
| Bofors RP3 | <<locked>> | 88% | 34,621 psi | 63% | 2388 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,058 psi | 69% | 2356 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,446 psi | 61% | 2352 fps | 96.1% |
| Hodgdon CFE223 | <<locked>> | 82% | 39,784 psi | 72% | 2526 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 40,640 psi | 74% | 2461 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 80% | 41,321 psi | 75% | 2480 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 94% | 44,512 psi | 81% | 2552 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 82% | 36,129 psi | 66% | 2388 fps | 95.4% |
| Hodgdon LEVERevolution | 41.8 gr | 84% | 34,592 psi | 63% | 2398 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,932 psi | 45% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 37,594 psi | 68% | 2402 fps | 95.8% |
| IMR 3031 | <<locked>> | 80% | 32,518 psi | 59% | 2349 fps | 99.2% |
| IMR 4064 | <<locked>> | 88% | 39,044 psi | 71% | 2418 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 43,468 psi | 79% | 2428 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 37,057 psi | 67% | 2434 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 35,810 psi | 65% | 2349 fps | 96.1% |
| Lovex D073.5 | <<locked>> | 80% | 39,581 psi | 72% | 2428 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 80% | 31,401 psi | 57% | 2300 fps | 96.6% |
| Lovex S060 | <<locked>> | 82% | 37,347 psi | 68% | 2339 fps | 95.1% |
| Lovex S062 | <<locked>> | 84% | 33,591 psi | 61% | 2320 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 33,054 psi | 60% | 2290 fps | 95.3% |
| Norma 202 | <<locked>> | 80% | 33,025 psi | 60% | 2310 fps | 97.8% |
| Norma 203B | <<locked>> | 88% | 38,058 psi | 69% | 2448 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 90% | 40,408 psi | 73% | 2507 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 39,508 psi | 72% | 2461 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,073 psi | 71% | 2395 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,135 psi | 46% | 1453 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,219 psi | 73% | 2438 fps | 98.6% |
| ReloadSwiss RS 52 | 43.3 gr | 88% | 40,379 psi | 73% | 2552 fps | 95.4% |
| ReloadSwiss RS 60 | 42.9 gr | 86% | 31,140 psi | 56% | 2349 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 36,419 psi | 66% | 2349 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 82% | 33,286 psi | 60% | 2290 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 90% | 34,795 psi | 63% | 2385 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,401 psi | 57% | 2300 fps | 96.6% |
| Shooters World Precision | <<locked>> | 84% | 33,591 psi | 61% | 2320 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 42,786 psi | 78% | 2454 fps | 97.6% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,063 psi | 82% | 2536 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 39,189 psi | 71% | 2490 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 42,801 psi | 78% | 2461 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 37,043 psi | 67% | 2398 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,911 psi | 63% | 2277 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,311 psi | 51% | 2142 fps | 97.3% |
| Somchem S321 | <<locked>> | 80% | 38,072 psi | 69% | 2418 fps | 97.1% |
| Somchem S335 | <<locked>> | 80% | 34,389 psi | 62% | 2280 fps | 98.8% |
| Somchem S341 | <<locked>> | 84% | 38,014 psi | 69% | 2411 fps | 95.2% |
| Somchem S355 | <<locked>> | 90% | 36,071 psi | 65% | 2395 fps | 95.3% |
| Somchem S365 | <<locked>> | 98% | 33,228 psi | 60% | 2408 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 39,827 psi | 72% | 2362 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,940 psi | 63% | 2283 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 80% | 29,878 psi | 54% | 2247 fps | 99.2% |
| Vihtavuori N140 | <<locked>> | 80% | 31,169 psi | 57% | 2251 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 88% | 32,198 psi | 58% | 2290 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 35,549 psi | 65% | 2343 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 80% | 29,791 psi | 54% | 2231 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 38,508 psi | 70% | 2418 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 34,316 psi | 62% | 2375 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 36,100 psi | 66% | 2398 fps | 95.4% |
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 77 powders for 7.5 x 54 mm MAS loaded with the .308 | 165gr | Geco STAR. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,746 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,746 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 77 of the 77 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon TrailBoss, ReloadSwiss RS 14 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 52, Hodgdon LEVERevolution, ReloadSwiss RS 60 rank at the top here: for 7.5 x 54 mm MAS with the .308 | 165gr | Geco STAR 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.