Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 220gr | Sako Hammerhead bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 and Alliant Reloder-16.
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: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 47,500 psi | 86% | 2336 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 49,313 psi | 89% | 2392 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,251 psi | 80% | 2428 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 47,834 psi | 87% | 2382 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 46,891 psi | 85% | 2474 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 45,919 psi | 83% | 2546 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 86% | 48,907 psi | 89% | 2418 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 48,704 psi | 88% | 2510 fps | 98.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 46,296 psi | 84% | 2497 fps | 96.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 46,920 psi | 85% | 2520 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 48,501 psi | 88% | 2510 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 49,052 psi | 89% | 2434 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 49,124 psi | 89% | 2451 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 48,515 psi | 88% | 2523 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 48,878 psi | 89% | 2546 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,819 psi | 87% | 2507 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 44,396 psi | 81% | 2500 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,032 psi | 76% | 2451 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,956 psi | 67% | 2385 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,036 psi | 85% | 2612 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 40,901 psi | 74% | 2438 fps | 97% |
| Bofors RP3 | <<locked>> | 86% | 48,979 psi | 89% | 2444 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 44,396 psi | 81% | 2500 fps | 98% |
| Bofors RP7 | <<locked>> | 90% | 49,458 psi | 90% | 2434 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 86% | 49,850 psi | 90% | 2461 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 49,429 psi | 90% | 2520 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 88% | 47,268 psi | 86% | 2441 fps | 98.4% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 49,806 psi | 90% | 2503 fps | 96.8% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 48,573 psi | 88% | 2484 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 48,283 psi | 88% | 2454 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 47,500 psi | 86% | 2448 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 49,269 psi | 89% | 2556 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 65% | 1483 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 49,284 psi | 89% | 2418 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 48,370 psi | 88% | 2398 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 47,863 psi | 87% | 2382 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 49,632 psi | 90% | 2464 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 47,921 psi | 87% | 2415 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 47,674 psi | 87% | 2467 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 47,355 psi | 86% | 2431 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 48,646 psi | 88% | 2451 fps | 96.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 43,976 psi | 80% | 2474 fps | 96.2% |
| Lovex S062 | <<locked>> | 84% | 48,399 psi | 88% | 2392 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 47,659 psi | 86% | 2411 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 48,327 psi | 88% | 2444 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 36,767 psi | 67% | 2303 fps | 98.4% |
| Norma 201 | <<locked>> | 82% | 49,734 psi | 90% | 2398 fps | 100% |
| Norma 203B | <<locked>> | 84% | 48,428 psi | 88% | 2438 fps | 100% |
| Norma 204 | <<locked>> | 94% | 49,647 psi | 90% | 2507 fps | 98.4% |
| Norma MRPᴾ | <<locked>> | 100% | 46,876 psi | 85% | 2575 fps | 99.4% |
| Norma URP | <<locked>> | 94% | 49,501 psi | 90% | 2507 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 48,486 psi | 88% | 2461 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 43,787 psi | 79% | 2477 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 94% | 48,240 psi | 88% | 2513 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 38,624 psi | 70% | 2375 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,535 psi | 66% | 1522 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 47,065 psi | 85% | 2405 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 49,443 psi | 90% | 2510 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 48,849 psi | 89% | 2543 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 49,734 psi | 90% | 2539 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 49,269 psi | 89% | 2572 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 35,708 psi | 65% | 2392 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 82% | 47,340 psi | 86% | 2359 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 49,197 psi | 89% | 2441 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 47,427 psi | 86% | 2441 fps | 97.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,632 psi | 90% | 2533 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 90% | 49,458 psi | 90% | 2434 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 47,659 psi | 86% | 2411 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 48,399 psi | 88% | 2392 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 48,327 psi | 88% | 2444 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 47,398 psi | 86% | 2454 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 49,284 psi | 89% | 2431 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 48,356 psi | 88% | 2303 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 47,326 psi | 86% | 2369 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,153 psi | 89% | 2530 fps | 98.7% |
| Somchem S355 | <<locked>> | 88% | 49,574 psi | 90% | 2441 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 48,501 psi | 88% | 2428 fps | 96.4% |
| Somchem S365 | <<locked>> | 96% | 47,703 psi | 87% | 2507 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 47,137 psi | 86% | 2467 fps | 98.9% |
| Vihtavuori N135 | <<locked>> | 82% | 47,384 psi | 86% | 2323 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 47,747 psi | 87% | 2339 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 47,572 psi | 86% | 2375 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 48,515 psi | 88% | 2454 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 43,497 psi | 79% | 2395 fps | 98% |
| Vihtavuori N540 | <<locked>> | 84% | 48,979 psi | 89% | 2385 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 47,543 psi | 86% | 2467 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,543 psi | 84% | 2513 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 47,718 psi | 87% | 2562 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 48,182 psi | 87% | 2434 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 49,748 psi | 90% | 2526 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,666 psi | 68% | 2497 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 48,965 psi | 89% | 2434 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 47,384 psi | 86% | 2461 fps | 98.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 44,541 psi | 81% | 2297 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,410 psi | 79% | 2300 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 27,702 psi | 50% | 2113 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 42,148 psi | 76% | 2303 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,241 psi | 57% | 2198 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 98% | 42,873 psi | 78% | 2493 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 40,611 psi | 74% | 2287 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 90% | 37,956 psi | 69% | 2323 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 96% | 40,828 psi | 74% | 2402 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,816 psi | 80% | 2470 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 35,505 psi | 64% | 2277 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,683 psi | 74% | 2310 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,424 psi | 79% | 2365 fps | 100% |
| Alliant Reloder-16 | 39.7 gr | 80% | 31,618 psi | 57% | 2211 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,041 psi | 64% | 2316 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 35,114 psi | 64% | 2274 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 92% | 34,505 psi | 63% | 2310 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 22,872 psi | 42% | 2011 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 27,485 psi | 50% | 2152 fps | 95.4% |
| Alliant Reloder-26 | 44.9 gr | 82% | 25,570 psi | 46% | 2149 fps | 95.6% |
| Bofors RP15 | <<locked>> | 96% | 36,172 psi | 66% | 2346 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 40,480 psi | 73% | 2320 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 34,505 psi | 63% | 2310 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 36,332 psi | 66% | 2211 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 80% | 41,075 psi | 75% | 2326 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 33,504 psi | 61% | 2241 fps | 96.5% |
| Hodgdon H4350 | <<locked>> | 80% | 36,709 psi | 67% | 2254 fps | 96% |
| Hodgdon H4831 | <<locked>> | 96% | 43,584 psi | 79% | 2405 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 42,801 psi | 78% | 2392 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,037 psi | 53% | 2119 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,338 psi | 80% | 2405 fps | 100% |
| Hodgdon Superformance | <<locked>> | 80% | 32,503 psi | 59% | 2241 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 49% | 1325 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,296 psi | 84% | 2375 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,685 psi | 77% | 2313 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,063 psi | 82% | 2336 fps | 98.8% |
| IMR 4350 | <<locked>> | 80% | 32,169 psi | 58% | 2152 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,608 psi | 68% | 2238 fps | 97.3% |
| IMR 4831 | <<locked>> | 80% | 30,284 psi | 55% | 2159 fps | 98.2% |
| IMR 4895 | <<locked>> | 80% | 44,469 psi | 81% | 2388 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 43,076 psi | 78% | 2362 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 98% | 41,307 psi | 75% | 2425 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 42,772 psi | 78% | 2310 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,128 psi | 64% | 2198 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 33,446 psi | 61% | 2182 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 26,818 psi | 49% | 2090 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 46,760 psi | 85% | 2359 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,801 psi | 78% | 2356 fps | 100% |
| Norma 204 | <<locked>> | 84% | 35,679 psi | 65% | 2264 fps | 95% |
| Norma MRP | <<locked>> | 88% | 31,531 psi | 57% | 2274 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 31,647 psi | 57% | 2198 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 42,525 psi | 77% | 2375 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 40,799 psi | 74% | 2425 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 30,690 psi | 56% | 2185 fps | 96.4% |
| Ramshot Magnum | <<locked>> | 96% | 33,750 psi | 61% | 2274 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,253 psi | 49% | 1362 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,423 psi | 75% | 2313 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,064 psi | 84% | 2461 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,275 psi | 68% | 2359 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,995 psi | 56% | 2218 fps | 98.1% |
| ReloadSwiss RS 70 | 43.4 gr | 80% | 30,922 psi | 56% | 2221 fps | 97.5% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 33,373 psi | 61% | 2336 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 44,759 psi | 81% | 2323 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,145 psi | 69% | 2274 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 39,349 psi | 71% | 2303 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 36,071 psi | 65% | 2303 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 36,332 psi | 66% | 2211 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,128 psi | 64% | 2198 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 42,772 psi | 78% | 2310 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 33,446 psi | 61% | 2182 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,827 psi | 70% | 2320 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,093 psi | 84% | 2385 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,190 psi | 73% | 2192 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 34,316 psi | 62% | 2146 fps | 96.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 35,766 psi | 65% | 2297 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 38,667 psi | 70% | 2274 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 42,728 psi | 78% | 2339 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 28,355 psi | 51% | 2162 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 31,966 psi | 58% | 2195 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 44,425 psi | 81% | 2283 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,860 psi | 81% | 2300 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,927 psi | 67% | 2215 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 32,895 psi | 60% | 2192 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 92% | 33,707 psi | 61% | 2218 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 43,105 psi | 78% | 2303 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,401 psi | 59% | 2201 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 24,395 psi | 44% | 2070 fps | 96.7% |
| Vihtavuori N560 | <<locked>> | 96% | 41,945 psi | 76% | 2464 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,416 psi | 59% | 2172 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 33,504 psi | 61% | 2241 fps | 96.5% |
| Winchester StaBALL HD | <<locked>> | 82% | 21,408 psi | 39% | 2031 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,774 psi | 83% | 2392 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 36,172 psi | 66% | 2270 fps | 95.3% |
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 93 powders for 7.5 x 55 Swiss loaded with the .308 | 220gr | Sako Hammerhead. Alliant Reloder-26 delivers the highest muzzle velocity at 2,612 fps; across all powders the maximum-charge window runs from 1,483 fps to 2,612 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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 70, Alliant Reloder-26, Alliant Reloder-16 rank at the top here: for 7.5 x 55 Swiss with the .308 | 220gr | Sako Hammerhead 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.