Load Specifications
Bullet Manufacturer:MAKER
Bullet Weight:240 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:7.5 x 55 Swiss load data
Case Length (l3):2.188"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:65 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:31"
Max. allowed Pressure:55,114 psi
Recommended Twist Rate:1:10.0
Load data in caliber 7.5 x 55 Swiss with .308 | 240gr | MAKER Rex Expanding Subsonic bullet and 105 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.
A valid access license is required to use the Personalized Load Calculator.
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% | 48,878 psi | 89% | 2198 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 47,848 psi | 87% | 2215 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,090 psi | 76% | 2247 fps | 99.4% |
| Accurate 4064 | <<locked>> | 86% | 49,124 psi | 89% | 2244 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 48,138 psi | 87% | 2333 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 46,050 psi | 84% | 2408 fps | 97.6% |
| ADI AR 2206H | <<locked>> | 82% | 49,226 psi | 89% | 2270 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 47,384 psi | 86% | 2238 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 47,036 psi | 85% | 2326 fps | 98.2% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 44,614 psi | 81% | 2313 fps | 96.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 48,196 psi | 87% | 2375 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 49,545 psi | 90% | 2365 fps | 98.6% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 49,545 psi | 90% | 2365 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 47,268 psi | 86% | 2254 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 47,543 psi | 86% | 2270 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 49,501 psi | 90% | 2375 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 47,137 psi | 86% | 2362 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 48,805 psi | 89% | 2359 fps | 98.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 42,627 psi | 77% | 2316 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,147 psi | 73% | 2270 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 35,607 psi | 65% | 2211 fps | 98.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,672 psi | 81% | 2418 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 48,718 psi | 88% | 2290 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 39,247 psi | 71% | 2257 fps | 96.7% |
| Bofors RP3 | <<locked>> | 86% | 47,427 psi | 86% | 2267 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 42,627 psi | 77% | 2316 fps | 97.7% |
| Bofors RP7 | <<locked>> | 90% | 47,732 psi | 87% | 2254 fps | 99% |
| Hodgdon H380 | <<locked>> | 86% | 48,153 psi | 87% | 2283 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 47,718 psi | 87% | 2336 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 90% | 48,472 psi | 88% | 2300 fps | 98.7% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 47,819 psi | 87% | 2316 fps | 96.4% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 46,789 psi | 85% | 2300 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 82% | 49,748 psi | 90% | 2277 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 49,081 psi | 89% | 2306 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 48,762 psi | 88% | 2310 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 47,282 psi | 86% | 2365 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,679 psi | 65% | 1371 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 47,761 psi | 87% | 2241 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 49,864 psi | 90% | 2260 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 49,574 psi | 90% | 2247 fps | 99.4% |
| IMR 4350 | <<locked>> | 94% | 47,659 psi | 86% | 2277 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 90% | 49,545 psi | 90% | 2280 fps | 99.4% |
| IMR 4831 | <<locked>> | 96% | 48,791 psi | 89% | 2326 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 48,762 psi | 88% | 2293 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 47,036 psi | 85% | 2270 fps | 96.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 42,293 psi | 77% | 2287 fps | 95.8% |
| Lovex D073.6 | <<locked>> | 82% | 48,936 psi | 89% | 2247 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 49,037 psi | 89% | 2208 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 49,821 psi | 90% | 2254 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 49,052 psi | 89% | 2274 fps | 99.9% |
| Lovex S070 | <<locked>> | 94% | 49,545 psi | 90% | 2306 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 34,969 psi | 63% | 2133 fps | 98.2% |
| Norma 201 | <<locked>> | 82% | 48,298 psi | 88% | 2224 fps | 100% |
| Norma 202 | <<locked>> | 82% | 48,646 psi | 88% | 2221 fps | 100% |
| Norma 203B | <<locked>> | 86% | 49,821 psi | 90% | 2300 fps | 100% |
| Norma 204 | <<locked>> | 94% | 47,877 psi | 87% | 2323 fps | 98.2% |
| Norma MRPᴾ | <<locked>> | 100% | 44,817 psi | 81% | 2385 fps | 99.2% |
| Norma URP | <<locked>> | 94% | 47,529 psi | 86% | 2323 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 46,746 psi | 85% | 2283 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 41,901 psi | 76% | 2290 fps | 96% |
| Ramshot Hunter | <<locked>> | 96% | 49,327 psi | 90% | 2369 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 36,898 psi | 67% | 2192 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,245 psi | 66% | 1404 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 48,370 psi | 88% | 2267 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 47,442 psi | 86% | 2320 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 46,833 psi | 85% | 2352 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 47,471 psi | 86% | 2352 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 47,282 psi | 86% | 2379 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 34,171 psi | 62% | 2211 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 84% | 48,994 psi | 89% | 2224 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 47,297 psi | 86% | 2260 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 48,617 psi | 88% | 2300 fps | 97.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 47,630 psi | 86% | 2346 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 90% | 47,732 psi | 87% | 2254 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 92% | 49,052 psi | 89% | 2274 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 48,936 psi | 89% | 2247 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 49,821 psi | 90% | 2254 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 49,545 psi | 90% | 2306 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 48,791 psi | 89% | 2316 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 49,719 psi | 90% | 2274 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 47,587 psi | 86% | 2251 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 49,705 psi | 90% | 2162 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 46,833 psi | 85% | 2133 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 48,863 psi | 89% | 2234 fps | 99.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 47,195 psi | 86% | 2343 fps | 98.5% |
| Somchem S335 | <<locked>> | 82% | 49,139 psi | 89% | 2165 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 49,617 psi | 90% | 2264 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 47,979 psi | 87% | 2260 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 49,850 psi | 90% | 2293 fps | 96.7% |
| Somchem S365 | <<locked>> | 98% | 48,776 psi | 89% | 2362 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,225 psi | 88% | 2326 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 84% | 48,805 psi | 89% | 2188 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 49,066 psi | 89% | 2201 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 48,820 psi | 89% | 2238 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 49,850 psi | 90% | 2316 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 41,626 psi | 76% | 2218 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 47,413 psi | 86% | 2211 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 48,820 psi | 89% | 2326 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,237 psi | 80% | 2326 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 45,759 psi | 83% | 2372 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 49,400 psi | 90% | 2293 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 47,718 psi | 87% | 2336 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,940 psi | 65% | 2310 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 47,152 psi | 86% | 2254 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 45,107 psi | 82% | 2274 fps | 97.8% |
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% | 43,004 psi | 78% | 2126 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,047 psi | 76% | 2129 fps | 97.8% |
| Accurate 3100 | <<locked>> | 86% | 26,310 psi | 48% | 1952 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 40,683 psi | 74% | 2136 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,936 psi | 54% | 2034 fps | 98.3% |
| Accurate High Country | <<locked>> | 94% | 37,681 psi | 68% | 2264 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 46,311 psi | 84% | 2231 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 39,320 psi | 71% | 2119 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 90% | 36,434 psi | 66% | 2146 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 98% | 41,930 psi | 76% | 2267 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,221 psi | 77% | 2287 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 36,492 psi | 66% | 2152 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 36,492 psi | 66% | 2152 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,189 psi | 71% | 2139 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,989 psi | 76% | 2192 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,589 psi | 56% | 2047 fps | 98.6% |
| Alliant Reloder-17 | 38.2 gr | 80% | 33,779 psi | 61% | 2146 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 36,085 psi | 65% | 2149 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 35,230 psi | 64% | 2182 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 22,089 psi | 40% | 1860 fps | 96.4% |
| Alliant Reloder-25 | <<locked>> | 90% | 26,368 psi | 48% | 1988 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 82% | 24,453 psi | 44% | 1985 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,556 psi | 83% | 2247 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 34,780 psi | 63% | 2172 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 38,870 psi | 71% | 2149 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 35,230 psi | 64% | 2182 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 35,027 psi | 64% | 2047 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 80% | 39,653 psi | 72% | 2156 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 32,314 psi | 59% | 2073 fps | 96.4% |
| Hodgdon H4350 | <<locked>> | 80% | 35,389 psi | 64% | 2087 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 98% | 44,860 psi | 81% | 2270 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 43,932 psi | 80% | 2257 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 46,731 psi | 85% | 2238 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,949 psi | 51% | 1962 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,699 psi | 77% | 2228 fps | 100% |
| Hodgdon Superformance | 40.4 gr | 80% | 31,473 psi | 57% | 2080 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,803 psi | 49% | 1227 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,875 psi | 81% | 2201 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,307 psi | 75% | 2139 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,918 psi | 80% | 2165 fps | 98.7% |
| IMR 4350 | <<locked>> | 80% | 31,067 psi | 56% | 1991 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 36,608 psi | 66% | 2073 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 29,269 psi | 53% | 2005 fps | 98.1% |
| IMR 4895 | <<locked>> | 80% | 43,004 psi | 78% | 2215 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 41,394 psi | 75% | 2185 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 98% | 39,726 psi | 72% | 2241 fps | 95% |
| Lovex D073.6 | <<locked>> | 80% | 45,585 psi | 83% | 2208 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,137 psi | 84% | 2169 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 41,365 psi | 75% | 2142 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 34,011 psi | 62% | 2034 fps | 98% |
| Lovex S070 | <<locked>> | 80% | 32,227 psi | 58% | 2021 fps | 96.4% |
| Lovex S071 | <<locked>> | 92% | 27,296 psi | 50% | 1975 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 45,382 psi | 82% | 2185 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,716 psi | 83% | 2185 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,365 psi | 75% | 2182 fps | 100% |
| Norma 204 | <<locked>> | 86% | 36,767 psi | 67% | 2142 fps | 95.6% |
| Norma MRP | <<locked>> | 88% | 30,414 psi | 55% | 2106 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 30,400 psi | 55% | 2034 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 80% | 40,973 psi | 74% | 2201 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 39,276 psi | 71% | 2241 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 29,689 psi | 54% | 2028 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 98% | 34,621 psi | 63% | 2149 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,093 psi | 49% | 1253 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,030 psi | 73% | 2142 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,454 psi | 81% | 2280 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,984 psi | 65% | 2185 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 29,559 psi | 54% | 2047 fps | 97.9% |
| ReloadSwiss RS 70 | 38.8 gr | 80% | 29,805 psi | 54% | 2057 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 31,952 psi | 58% | 2159 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 43,279 psi | 79% | 2149 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 36,608 psi | 66% | 2103 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 40,335 psi | 73% | 2175 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 90% | 34,447 psi | 63% | 2126 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 35,027 psi | 64% | 2047 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,011 psi | 62% | 2034 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,585 psi | 83% | 2208 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,365 psi | 75% | 2142 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 32,227 psi | 58% | 2021 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,521 psi | 68% | 2152 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,717 psi | 85% | 2234 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,730 psi | 81% | 2211 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,601 psi | 85% | 2126 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,928 psi | 71% | 2031 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 33,127 psi | 60% | 1988 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 34,185 psi | 62% | 2123 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 46,238 psi | 84% | 2129 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,398 psi | 84% | 2224 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 37,405 psi | 68% | 2106 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 43,888 psi | 80% | 2208 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 27,238 psi | 49% | 2001 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 30,806 psi | 56% | 2034 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 42,873 psi | 78% | 2116 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,294 psi | 79% | 2129 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,563 psi | 65% | 2051 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 31,705 psi | 58% | 2031 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 32,532 psi | 59% | 2054 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 41,698 psi | 76% | 2136 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 31,169 psi | 57% | 2037 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 23,409 psi | 42% | 1919 fps | 96.5% |
| Vihtavuori N560 | <<locked>> | 96% | 40,234 psi | 73% | 2277 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,415 psi | 57% | 2014 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 32,314 psi | 59% | 2073 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 20,595 psi | 37% | 1877 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,309 psi | 80% | 2218 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 34,693 psi | 63% | 2096 fps | 95% |
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 105 powders for 7.5 x 55 Swiss loaded with the .308 | 240gr | MAKER Rex Expanding Subsonic. Alliant Reloder-26 delivers the highest muzzle velocity at 2,418 fps; across all powders the maximum-charge window runs from 1,371 fps to 2,418 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 240.0 gr projectile in 0.308" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, 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 | 240gr | MAKER Rex Expanding Subsonic 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.