Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 230gr | Berger Hybrid OTM Tactical bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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>> | 84% | 48,863 psi | 89% | 2267 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 47,819 psi | 87% | 2280 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,105 psi | 76% | 2313 fps | 99.2% |
| Accurate 4064 | <<locked>> | 86% | 48,979 psi | 89% | 2313 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 48,153 psi | 87% | 2402 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 49,226 psi | 89% | 2339 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 47,268 psi | 86% | 2306 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 46,862 psi | 85% | 2392 fps | 97.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 44,614 psi | 81% | 2379 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 48,138 psi | 87% | 2444 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 47,079 psi | 85% | 2323 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 47,776 psi | 87% | 2343 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 49,530 psi | 90% | 2448 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 47,108 psi | 85% | 2431 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 48,820 psi | 89% | 2428 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 42,627 psi | 77% | 2382 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,277 psi | 73% | 2339 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 35,636 psi | 65% | 2274 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,976 psi | 82% | 2490 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 48,689 psi | 88% | 2359 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 39,334 psi | 71% | 2323 fps | 96.5% |
| Bofors RP3 | <<locked>> | 86% | 47,137 psi | 86% | 2333 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 42,627 psi | 77% | 2382 fps | 97.5% |
| Bofors RP7 | <<locked>> | 90% | 47,703 psi | 87% | 2320 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 86% | 48,167 psi | 87% | 2349 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 47,703 psi | 87% | 2405 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 90% | 48,675 psi | 88% | 2372 fps | 98.5% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 47,747 psi | 87% | 2382 fps | 96.2% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 46,746 psi | 85% | 2365 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 82% | 49,748 psi | 90% | 2349 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 49,371 psi | 90% | 2379 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 48,762 psi | 88% | 2379 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 47,514 psi | 86% | 2434 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,752 psi | 65% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 47,732 psi | 87% | 2310 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 49,777 psi | 90% | 2320 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 49,748 psi | 90% | 2326 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 49,414 psi | 90% | 2313 fps | 99.3% |
| IMR 4350 | <<locked>> | 94% | 47,703 psi | 87% | 2346 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 49,472 psi | 90% | 2346 fps | 99.3% |
| IMR 4831 | <<locked>> | 96% | 48,718 psi | 88% | 2395 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 48,936 psi | 89% | 2365 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 46,876 psi | 85% | 2336 fps | 96.2% |
| Lovex D073.6 | <<locked>> | 82% | 48,733 psi | 88% | 2316 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 49,153 psi | 89% | 2277 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 49,734 psi | 90% | 2323 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 48,950 psi | 89% | 2343 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 49,574 psi | 90% | 2375 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 34,940 psi | 63% | 2192 fps | 98% |
| Norma 201 | <<locked>> | 82% | 48,356 psi | 88% | 2293 fps | 100% |
| Norma 202 | <<locked>> | 82% | 48,733 psi | 88% | 2290 fps | 100% |
| Norma 203B | <<locked>> | 84% | 47,079 psi | 85% | 2333 fps | 100% |
| Norma 204 | <<locked>> | 94% | 47,659 psi | 86% | 2388 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 44,933 psi | 82% | 2454 fps | 99.1% |
| Norma URP | <<locked>> | 94% | 47,616 psi | 86% | 2395 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 49,850 psi | 90% | 2392 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 49,371 psi | 90% | 2441 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 36,927 psi | 67% | 2254 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,260 psi | 66% | 1453 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 48,312 psi | 88% | 2336 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 47,601 psi | 86% | 2395 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 46,949 psi | 85% | 2425 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 47,572 psi | 86% | 2425 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 47,282 psi | 86% | 2451 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 48,718 psi | 88% | 2290 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 47,384 psi | 86% | 2329 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 48,472 psi | 88% | 2365 fps | 97.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 47,703 psi | 87% | 2415 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 90% | 47,703 psi | 87% | 2320 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 48,950 psi | 89% | 2343 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 48,733 psi | 88% | 2316 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 49,734 psi | 90% | 2323 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 49,574 psi | 90% | 2375 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 48,646 psi | 88% | 2382 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 49,705 psi | 90% | 2343 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 47,761 psi | 87% | 2320 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 49,574 psi | 90% | 2231 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 49,806 psi | 90% | 2234 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 48,602 psi | 88% | 2300 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 47,253 psi | 86% | 2411 fps | 98.3% |
| Somchem S335 | <<locked>> | 82% | 49,226 psi | 89% | 2234 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 49,588 psi | 90% | 2333 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 47,761 psi | 87% | 2329 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 46,833 psi | 85% | 2316 fps | 95.9% |
| Somchem S365 | <<locked>> | 98% | 48,588 psi | 88% | 2431 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,138 psi | 87% | 2392 fps | 99% |
| Vihtavuori N135 | <<locked>> | 84% | 48,588 psi | 88% | 2254 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 48,994 psi | 89% | 2270 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 48,747 psi | 88% | 2306 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 49,806 psi | 90% | 2385 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 41,640 psi | 76% | 2280 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 47,195 psi | 86% | 2277 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 48,689 psi | 88% | 2395 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,309 psi | 80% | 2398 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 45,832 psi | 83% | 2441 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 49,705 psi | 90% | 2365 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 47,703 psi | 87% | 2405 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,810 psi | 65% | 2375 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 47,210 psi | 86% | 2326 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 45,339 psi | 82% | 2343 fps | 97.6% |
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% | 42,888 psi | 78% | 2192 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,989 psi | 76% | 2195 fps | 97.6% |
| Accurate 3100 | <<locked>> | 86% | 26,339 psi | 48% | 2008 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 40,553 psi | 74% | 2198 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,950 psi | 54% | 2096 fps | 98.2% |
| ADI AR 2206H | <<locked>> | 80% | 46,383 psi | 84% | 2300 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 39,508 psi | 72% | 2188 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 36,622 psi | 66% | 2211 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 98% | 42,003 psi | 76% | 2333 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,061 psi | 76% | 2352 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,291 psi | 71% | 2205 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,076 psi | 76% | 2260 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,530 psi | 55% | 2106 fps | 98.3% |
| Alliant Reloder-17 | 39.6 gr | 80% | 33,736 psi | 61% | 2208 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 35,984 psi | 65% | 2211 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 35,447 psi | 64% | 2247 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 22,031 psi | 40% | 1913 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 92% | 28,021 psi | 51% | 2090 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 84% | 26,063 psi | 47% | 2090 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,339 psi | 82% | 2313 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 34,766 psi | 63% | 2234 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 38,928 psi | 71% | 2211 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 35,447 psi | 64% | 2247 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 35,172 psi | 64% | 2110 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 80% | 39,624 psi | 72% | 2221 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 32,300 psi | 59% | 2136 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 35,404 psi | 64% | 2149 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 98% | 44,889 psi | 81% | 2336 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 44,005 psi | 80% | 2323 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 46,862 psi | 85% | 2310 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,876 psi | 51% | 2018 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,888 psi | 78% | 2297 fps | 100% |
| Hodgdon Superformance | 41.9 gr | 80% | 31,430 psi | 57% | 2136 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,629 psi | 48% | 1263 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,672 psi | 81% | 2267 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 46,702 psi | 85% | 2283 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,524 psi | 75% | 2208 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,700 psi | 79% | 2228 fps | 98.6% |
| IMR 4350 | <<locked>> | 82% | 33,069 psi | 60% | 2093 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 36,463 psi | 66% | 2133 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 29,109 psi | 53% | 2060 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 43,134 psi | 78% | 2283 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 44,222 psi | 80% | 2293 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 80% | 45,556 psi | 83% | 2274 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,064 psi | 84% | 2234 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 41,249 psi | 75% | 2205 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 33,924 psi | 62% | 2093 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 32,314 psi | 59% | 2080 fps | 96.2% |
| Lovex S071 | <<locked>> | 92% | 27,311 psi | 50% | 2031 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 45,237 psi | 82% | 2251 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,890 psi | 83% | 2254 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,466 psi | 75% | 2251 fps | 100% |
| Norma 204 | <<locked>> | 86% | 36,738 psi | 67% | 2205 fps | 95.3% |
| Norma MRP | <<locked>> | 88% | 30,472 psi | 55% | 2165 fps | 95% |
| Norma URP | <<locked>> | 80% | 30,472 psi | 55% | 2096 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 40,814 psi | 74% | 2264 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 29,660 psi | 54% | 2083 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 98% | 34,490 psi | 63% | 2205 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,151 psi | 49% | 1299 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,001 psi | 73% | 2205 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,382 psi | 81% | 2349 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,897 psi | 65% | 2251 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 29,733 psi | 54% | 2113 fps | 97.7% |
| ReloadSwiss RS 70 | 40.2 gr | 80% | 29,689 psi | 54% | 2113 fps | 97% |
| Rottweil R 902 | <<locked>> | 80% | 43,207 psi | 78% | 2215 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 36,738 psi | 67% | 2169 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 40,205 psi | 73% | 2234 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 90% | 34,635 psi | 63% | 2192 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 35,172 psi | 64% | 2110 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,924 psi | 62% | 2093 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,556 psi | 83% | 2274 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,249 psi | 75% | 2205 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 32,314 psi | 59% | 2080 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,478 psi | 68% | 2215 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,485 psi | 84% | 2297 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,744 psi | 81% | 2280 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,644 psi | 85% | 2192 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,928 psi | 71% | 2093 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 32,938 psi | 60% | 2044 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 34,345 psi | 62% | 2188 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 46,151 psi | 84% | 2195 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,166 psi | 84% | 2287 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 37,260 psi | 68% | 2169 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 43,874 psi | 80% | 2274 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 27,296 psi | 50% | 2064 fps | 99.6% |
| Somchem S385 | <<locked>> | 88% | 32,793 psi | 60% | 2136 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 42,844 psi | 78% | 2182 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,424 psi | 79% | 2198 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,636 psi | 65% | 2113 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 31,749 psi | 58% | 2093 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 94% | 34,577 psi | 63% | 2156 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 41,669 psi | 76% | 2198 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 31,183 psi | 57% | 2096 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 23,337 psi | 42% | 1972 fps | 96.2% |
| Vihtavuori N560 | <<locked>> | 98% | 42,946 psi | 78% | 2392 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,270 psi | 57% | 2070 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 32,300 psi | 59% | 2136 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 82% | 20,639 psi | 37% | 1929 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,193 psi | 80% | 2283 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 37,115 psi | 67% | 2205 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 110 powders for 7.5 x 55 Swiss loaded with the .308 | 230gr | Berger Hybrid OTM Tactical. Alliant Reloder-26 delivers the highest muzzle velocity at 2,490 fps; across all powders the maximum-charge window runs from 1,417 fps to 2,490 fps. Accurate 3100 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 230.0 gr projectile in 0.308" calls for a 1:10.5 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 7.5 x 55 Swiss with the .308 | 230gr | Berger Hybrid OTM Tactical they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.