Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:180 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:7.5 x 54 mm MAS load data
Case Length (l3):2.12"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:58 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23"
Max. allowed Pressure:55,114 psi
Recommended Twist Rate:1:13.5
Load data in caliber 7.5 x 54 mm MAS with .308 | 180gr | Sierra SPT Pro-Hunter bullet and 81 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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 49,487 psi | 90% | 2434 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 47,500 psi | 86% | 2444 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 49,284 psi | 89% | 2484 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 48,704 psi | 88% | 2500 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 49,342 psi | 90% | 2520 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,411 psi | 81% | 2510 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 88% | 48,312 psi | 88% | 2500 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 94% | 49,037 psi | 89% | 2493 fps | 98.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 47,645 psi | 86% | 2461 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 86% | 47,050 psi | 85% | 2457 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 48,675 psi | 88% | 2549 fps | 99.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 46,992 psi | 85% | 2579 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 48,167 psi | 87% | 2513 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 82% | 49,284 psi | 89% | 2434 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 49,052 psi | 89% | 2533 fps | 98.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,904 psi | 81% | 2520 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 98% | 48,080 psi | 87% | 2605 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 47,514 psi | 86% | 2507 fps | 97.7% |
| Bofors RP3 | <<locked>> | 94% | 47,993 psi | 87% | 2523 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 47,152 psi | 86% | 2415 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 88% | 49,095 psi | 89% | 2533 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 84% | 47,326 psi | 86% | 2559 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 82% | 48,167 psi | 87% | 2467 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 48,863 psi | 89% | 2487 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 49,574 psi | 90% | 2530 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 88% | 48,704 psi | 88% | 2510 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,104 psi | 75% | 2415 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 47,021 psi | 85% | 2536 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,679 psi | 63% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 47,079 psi | 85% | 2470 fps | 98.9% |
| IMR 3031 | <<locked>> | 88% | 47,776 psi | 87% | 2507 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 48,660 psi | 88% | 2480 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,612 psi | 77% | 2461 fps | 96.6% |
| IMR 4895 | <<locked>> | 90% | 47,021 psi | 85% | 2510 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 86% | 47,645 psi | 86% | 2461 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 82% | 47,326 psi | 86% | 2451 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 88% | 46,963 psi | 85% | 2484 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 48,689 psi | 88% | 2438 fps | 98.8% |
| Lovex S062 | <<locked>> | 92% | 48,095 psi | 87% | 2480 fps | 99.5% |
| Lovex S065 | <<locked>> | 98% | 47,050 psi | 85% | 2464 fps | 95.9% |
| Norma 201 | <<locked>> | 88% | 47,297 psi | 86% | 2457 fps | 99.4% |
| Norma 202 | <<locked>> | 88% | 47,413 psi | 86% | 2464 fps | 100% |
| Norma 203B | <<locked>> | 92% | 48,211 psi | 87% | 2523 fps | 98.8% |
| Norma URPᴾ | <<locked>> | 100% | 44,759 psi | 81% | 2507 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 92% | 48,269 psi | 88% | 2543 fps | 98.6% |
| Ramshot TAC | <<locked>> | 86% | 47,776 psi | 87% | 2464 fps | 96.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 46,775 psi | 85% | 2484 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 84% | 48,805 psi | 89% | 2464 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,940 psi | 63% | 1568 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 47,369 psi | 86% | 2451 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 48,182 psi | 87% | 2582 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 48,124 psi | 87% | 2615 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,382 psi | 81% | 2526 fps | 96.5% |
| Rottweil R 901 | <<locked>> | 86% | 48,573 psi | 88% | 2451 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 47,587 psi | 86% | 2454 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 96% | 47,877 psi | 87% | 2513 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 47,050 psi | 85% | 2464 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 46,963 psi | 85% | 2484 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 48,095 psi | 87% | 2480 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 49,676 psi | 90% | 2572 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 48,820 psi | 89% | 2490 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 49,617 psi | 90% | 2520 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 49,313 psi | 89% | 2415 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 48,675 psi | 88% | 2415 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 48,240 psi | 88% | 2490 fps | 99.6% |
| Somchem S335 | <<locked>> | 88% | 48,544 psi | 88% | 2418 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 48,573 psi | 88% | 2490 fps | 98.7% |
| Somchem S355 | <<locked>> | 96% | 48,791 psi | 89% | 2516 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,958 psi | 73% | 2461 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 84% | 49,356 psi | 90% | 2392 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 49,269 psi | 89% | 2408 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 49,487 psi | 90% | 2477 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 47,848 psi | 87% | 2451 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 46,963 psi | 85% | 2461 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,152 psi | 86% | 2507 fps | 97.2% |
| Vihtavuori N530 | <<locked>> | 86% | 47,993 psi | 87% | 2464 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 92% | 49,211 psi | 89% | 2487 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,296 psi | 84% | 2513 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,283 psi | 88% | 2497 fps | 99.1% |
| Winchester 748 | <<locked>> | 86% | 47,021 psi | 85% | 2503 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 49,211 psi | 89% | 2526 fps | 99.2% |
Start Load - Barrel Length: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 40,944 psi | 74% | 2306 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,454 psi | 81% | 2398 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 33,315 psi | 60% | 2221 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,494 psi | 72% | 2349 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 31,546 psi | 57% | 2205 fps | 98.7% |
| Accurate 4350 | <<locked>> | 96% | 38,682 psi | 70% | 2408 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 37,637 psi | 68% | 2310 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 36,274 psi | 66% | 2264 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,653 psi | 72% | 2323 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 80% | 38,377 psi | 70% | 2326 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,788 psi | 83% | 2500 fps | 98.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 38,624 psi | 70% | 2415 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,850 psi | 56% | 2185 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,398 psi | 84% | 2395 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 35,694 psi | 65% | 2287 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,697 psi | 72% | 2418 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 88% | 34,722 psi | 63% | 2339 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,899 psi | 71% | 2352 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 30,269 psi | 55% | 2185 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,698 psi | 76% | 2323 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,652 psi | 68% | 2336 fps | 98.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,162 psi | 75% | 2448 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 80% | 45,005 psi | 82% | 2421 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,759 psi | 83% | 2441 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 40,843 psi | 74% | 2382 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 37,913 psi | 69% | 2320 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,084 psi | 62% | 2274 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,837 psi | 61% | 2283 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,802 psi | 47% | 1368 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,347 psi | 66% | 2274 fps | 96.6% |
| IMR 3031 | <<locked>> | 80% | 36,738 psi | 67% | 2326 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 35,810 psi | 65% | 2251 fps | 95.3% |
| IMR 4831 | <<locked>> | 96% | 37,492 psi | 68% | 2362 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 34,360 psi | 62% | 2270 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 39,653 psi | 72% | 2323 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 80% | 44,309 psi | 80% | 2402 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 35,723 psi | 65% | 2290 fps | 98.7% |
| Lovex S060 | <<locked>> | 80% | 38,363 psi | 70% | 2257 fps | 96.6% |
| Lovex S062 | <<locked>> | 80% | 33,170 psi | 60% | 2208 fps | 96.5% |
| Lovex S065 | <<locked>> | 96% | 44,367 psi | 81% | 2418 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 36,782 psi | 67% | 2270 fps | 97.6% |
| Norma 202 | <<locked>> | 80% | 36,767 psi | 67% | 2283 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 35,041 psi | 64% | 2277 fps | 95.6% |
| Norma URP | <<locked>> | 96% | 39,421 psi | 72% | 2408 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 82% | 34,650 psi | 63% | 2287 fps | 95% |
| Ramshot TAC | <<locked>> | 84% | 44,904 psi | 81% | 2415 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,479 psi | 70% | 2336 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,728 psi | 78% | 2362 fps | 97.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,875 psi | 47% | 1398 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,367 psi | 81% | 2402 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 36,840 psi | 67% | 2372 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,631 psi | 52% | 2188 fps | 95.4% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 41,495 psi | 75% | 2474 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 40,727 psi | 74% | 2323 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 35,085 psi | 64% | 2228 fps | 97% |
| Rottweil R 903 | <<locked>> | 84% | 32,358 psi | 59% | 2228 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 96% | 44,367 psi | 81% | 2418 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,723 psi | 65% | 2290 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 33,170 psi | 60% | 2208 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,114 psi | 66% | 2326 fps | 95.7% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 42,801 psi | 78% | 2388 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,071 psi | 65% | 2277 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,609 psi | 70% | 2244 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,618 psi | 57% | 2123 fps | 99% |
| Somchem S321 | <<locked>> | 80% | 42,366 psi | 77% | 2395 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 37,913 psi | 69% | 2244 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 37,101 psi | 67% | 2290 fps | 96.1% |
| Somchem S355 | <<locked>> | 84% | 33,620 psi | 61% | 2238 fps | 95.7% |
| Somchem S365 | <<locked>> | 92% | 31,096 psi | 56% | 2260 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 43,758 psi | 79% | 2313 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,667 psi | 70% | 2247 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,924 psi | 62% | 2224 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,911 psi | 63% | 2231 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 28,137 psi | 51% | 2093 fps | 95% |
| Vihtavuori N160 | <<locked>> | 94% | 39,131 psi | 71% | 2365 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 39,436 psi | 72% | 2316 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 80% | 33,460 psi | 61% | 2215 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 96% | 40,567 psi | 74% | 2415 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,925 psi | 63% | 2254 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 38,392 psi | 70% | 2356 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,070 psi | 64% | 2274 fps | 96.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 81 powders for 7.5 x 54 mm MAS loaded with the .308 | 180gr | Sierra SPT Pro-Hunter. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,615 fps; across all powders the maximum-charge window runs from 1,532 fps to 2,615 fps. Accurate 4350 gives the best case fill at 100 %, and 81 of the 81 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 63–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Hodgdon Hybrid 100V 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.