Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:230 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:1:10.5
Load data in caliber 7.5 x 55 Swiss with .308 | 230gr | Sierra MatchKing 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% | 48,660 psi | 88% | 2264 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 47,630 psi | 86% | 2280 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,177 psi | 77% | 2313 fps | 99.3% |
| Accurate 4064 | <<locked>> | 86% | 49,095 psi | 89% | 2313 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 47,935 psi | 87% | 2398 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 49,313 psi | 89% | 2343 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 47,384 psi | 86% | 2306 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 46,978 psi | 85% | 2392 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 44,730 psi | 81% | 2379 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 48,240 psi | 88% | 2448 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 47,239 psi | 86% | 2323 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 47,500 psi | 86% | 2339 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 49,661 psi | 90% | 2448 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 46,934 psi | 85% | 2428 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 48,950 psi | 89% | 2431 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 42,743 psi | 78% | 2385 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,132 psi | 73% | 2336 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 35,491 psi | 64% | 2270 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,759 psi | 81% | 2487 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 48,501 psi | 88% | 2356 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 39,175 psi | 71% | 2320 fps | 96.5% |
| Bofors RP3 | <<locked>> | 86% | 47,239 psi | 86% | 2336 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 42,743 psi | 78% | 2385 fps | 97.5% |
| Bofors RP7 | <<locked>> | 90% | 47,819 psi | 87% | 2323 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 86% | 47,964 psi | 87% | 2346 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 47,500 psi | 86% | 2402 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 90% | 48,428 psi | 88% | 2365 fps | 98.5% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 47,877 psi | 87% | 2382 fps | 96.2% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 46,876 psi | 85% | 2369 fps | 96% |
| Hodgdon H4895 | <<locked>> | 82% | 49,835 psi | 90% | 2349 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 49,139 psi | 89% | 2379 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 48,892 psi | 89% | 2379 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 47,311 psi | 86% | 2431 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,810 psi | 65% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 47,529 psi | 86% | 2306 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 49,864 psi | 90% | 2323 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 49,864 psi | 90% | 2329 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 49,530 psi | 90% | 2316 fps | 99.3% |
| IMR 4350 | <<locked>> | 94% | 47,805 psi | 87% | 2346 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 49,298 psi | 89% | 2343 fps | 99.3% |
| IMR 4831 | <<locked>> | 96% | 48,834 psi | 89% | 2395 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 48,718 psi | 88% | 2362 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 49,792 psi | 90% | 2379 fps | 96.8% |
| Lovex D073.6 | <<locked>> | 82% | 48,515 psi | 88% | 2313 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 48,921 psi | 89% | 2274 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 49,516 psi | 90% | 2320 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 48,762 psi | 88% | 2339 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 49,356 psi | 90% | 2372 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 35,056 psi | 64% | 2195 fps | 98% |
| Norma 201 | <<locked>> | 82% | 48,124 psi | 87% | 2290 fps | 100% |
| Norma 202 | <<locked>> | 82% | 48,515 psi | 88% | 2287 fps | 100% |
| Norma 203B | <<locked>> | 86% | 49,690 psi | 90% | 2369 fps | 100% |
| Norma 204 | <<locked>> | 94% | 47,776 psi | 87% | 2388 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 44,715 psi | 81% | 2451 fps | 99.1% |
| Norma URP | <<locked>> | 94% | 47,355 psi | 86% | 2392 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 46,731 psi | 85% | 2349 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 49,211 psi | 89% | 2438 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 37,057 psi | 67% | 2257 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 66% | 1453 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 48,414 psi | 88% | 2336 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 47,384 psi | 86% | 2392 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 46,760 psi | 85% | 2421 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 47,398 psi | 86% | 2421 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 47,094 psi | 85% | 2448 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 48,820 psi | 89% | 2290 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 47,166 psi | 86% | 2326 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 48,631 psi | 88% | 2365 fps | 97.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 47,500 psi | 86% | 2411 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 90% | 47,819 psi | 87% | 2323 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 48,762 psi | 88% | 2339 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 48,515 psi | 88% | 2313 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 49,516 psi | 90% | 2320 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 49,356 psi | 90% | 2372 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 48,428 psi | 88% | 2379 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 49,835 psi | 90% | 2343 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 47,514 psi | 86% | 2316 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 49,719 psi | 90% | 2231 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 49,559 psi | 90% | 2231 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 48,733 psi | 88% | 2300 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 47,050 psi | 85% | 2408 fps | 98.3% |
| Somchem S335 | <<locked>> | 82% | 48,979 psi | 89% | 2231 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 49,400 psi | 90% | 2329 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 47,863 psi | 87% | 2329 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 49,792 psi | 90% | 2359 fps | 96.5% |
| Somchem S365 | <<locked>> | 98% | 48,704 psi | 88% | 2431 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,269 psi | 88% | 2395 fps | 99% |
| Vihtavuori N135 | <<locked>> | 84% | 48,675 psi | 88% | 2254 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 49,110 psi | 89% | 2270 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 48,863 psi | 89% | 2306 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 49,617 psi | 90% | 2382 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 41,756 psi | 76% | 2283 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 47,297 psi | 86% | 2277 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 48,805 psi | 89% | 2395 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,135 psi | 80% | 2395 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 45,658 psi | 83% | 2438 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 49,487 psi | 90% | 2362 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 47,819 psi | 87% | 2408 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,926 psi | 65% | 2375 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 47,311 psi | 86% | 2326 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 45,150 psi | 82% | 2339 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% | 42,946 psi | 78% | 2192 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,076 psi | 76% | 2195 fps | 97.6% |
| Accurate 3100 | <<locked>> | 88% | 28,166 psi | 51% | 2051 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 40,654 psi | 74% | 2198 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,805 psi | 54% | 2093 fps | 98.1% |
| ADI AR 2206H | <<locked>> | 80% | 46,166 psi | 84% | 2297 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 39,334 psi | 71% | 2182 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 36,477 psi | 66% | 2208 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 98% | 41,800 psi | 76% | 2329 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,148 psi | 76% | 2352 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,131 psi | 71% | 2201 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,872 psi | 76% | 2254 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,371 psi | 55% | 2103 fps | 98.3% |
| Alliant Reloder-17 | 39.6 gr | 80% | 33,808 psi | 61% | 2208 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 35,839 psi | 65% | 2205 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 35,317 psi | 64% | 2244 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 22,075 psi | 40% | 1913 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 92% | 27,891 psi | 51% | 2087 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 84% | 26,136 psi | 47% | 2090 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,426 psi | 82% | 2313 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 34,809 psi | 63% | 2234 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 38,740 psi | 70% | 2208 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 35,317 psi | 64% | 2244 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 35,012 psi | 64% | 2106 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 39,436 psi | 72% | 2218 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 32,140 psi | 58% | 2133 fps | 96% |
| Hodgdon H4350 | <<locked>> | 80% | 35,230 psi | 64% | 2146 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 98% | 44,715 psi | 81% | 2336 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 43,787 psi | 79% | 2320 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 46,644 psi | 85% | 2306 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,934 psi | 51% | 2018 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,685 psi | 77% | 2293 fps | 100% |
| Hodgdon Superformance | 42.9 gr | 82% | 33,605 psi | 61% | 2185 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,658 psi | 48% | 1263 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,759 psi | 81% | 2267 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 46,470 psi | 84% | 2280 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,321 psi | 75% | 2205 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,772 psi | 79% | 2228 fps | 98.6% |
| IMR 4350 | <<locked>> | 82% | 33,127 psi | 60% | 2093 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 36,550 psi | 66% | 2136 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 29,182 psi | 53% | 2060 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 42,917 psi | 78% | 2280 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 44,005 psi | 80% | 2290 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 80% | 45,658 psi | 83% | 2274 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,137 psi | 84% | 2234 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 41,336 psi | 75% | 2205 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 33,997 psi | 62% | 2093 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 32,169 psi | 58% | 2077 fps | 96.1% |
| Lovex S071 | <<locked>> | 92% | 27,166 psi | 49% | 2028 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 45,324 psi | 82% | 2251 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,672 psi | 83% | 2251 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,263 psi | 75% | 2244 fps | 100% |
| Norma 204 | <<locked>> | 86% | 36,825 psi | 67% | 2205 fps | 95.3% |
| Norma MRP | <<locked>> | 90% | 32,343 psi | 59% | 2211 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 30,313 psi | 55% | 2093 fps | 98% |
| Ramshot Big Game | <<locked>> | 80% | 40,901 psi | 74% | 2264 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 29,718 psi | 54% | 2083 fps | 96% |
| Ramshot Magnum | <<locked>> | 98% | 34,606 psi | 63% | 2208 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 49% | 1299 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,813 psi | 72% | 2201 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,483 psi | 81% | 2349 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,969 psi | 65% | 2251 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 29,573 psi | 54% | 2106 fps | 97.7% |
| ReloadSwiss RS 70 | 40.2 gr | 80% | 29,762 psi | 54% | 2113 fps | 97% |
| Rottweil R 902 | <<locked>> | 80% | 43,294 psi | 79% | 2215 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 36,535 psi | 66% | 2165 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 40,321 psi | 73% | 2238 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 90% | 34,476 psi | 63% | 2188 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 35,012 psi | 64% | 2106 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,997 psi | 62% | 2093 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,658 psi | 83% | 2274 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,336 psi | 75% | 2205 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 32,169 psi | 58% | 2077 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,550 psi | 68% | 2215 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,644 psi | 85% | 2300 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,831 psi | 81% | 2280 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,731 psi | 85% | 2192 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,015 psi | 71% | 2093 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 33,025 psi | 60% | 2044 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 34,200 psi | 62% | 2182 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 46,238 psi | 84% | 2195 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,253 psi | 84% | 2290 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 37,347 psi | 68% | 2169 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 43,671 psi | 79% | 2270 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 27,166 psi | 49% | 2060 fps | 99.6% |
| Somchem S385 | <<locked>> | 88% | 32,634 psi | 59% | 2133 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 42,931 psi | 78% | 2182 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,221 psi | 78% | 2195 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,491 psi | 64% | 2113 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 31,589 psi | 57% | 2090 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 94% | 34,432 psi | 62% | 2152 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 41,481 psi | 75% | 2198 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 31,009 psi | 56% | 2093 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 23,395 psi | 42% | 1972 fps | 96.2% |
| Vihtavuori N560 | <<locked>> | 98% | 42,743 psi | 78% | 2388 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,314 psi | 57% | 2070 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 32,140 psi | 58% | 2133 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 82% | 20,566 psi | 37% | 1926 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,280 psi | 80% | 2283 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 36,970 psi | 67% | 2201 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 100 powders for 7.5 x 55 Swiss loaded with the .308 | 230gr | Sierra MatchKing. Alliant Reloder-26 delivers the highest muzzle velocity at 2,487 fps; across all powders the maximum-charge window runs from 1,417 fps to 2,487 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 64–90 %, 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, ADI AR 2213, Alliant Reloder-19 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 | Sierra MatchKing 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.