Load Specifications
Bullet:.308 | 220gr | Lapua ScenarL
Bullet Manufacturer:Lapua
Bullet Weight:220 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:1:11.0
Load data in caliber 7.5 x 55 Swiss with .308 | 220gr | Lapua ScenarL bullet and 99 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% | 48,776 psi | 89% | 2336 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 47,761 psi | 87% | 2349 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,989 psi | 76% | 2375 fps | 99.1% |
| Accurate 4064 | <<locked>> | 86% | 48,776 psi | 89% | 2382 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 48,008 psi | 87% | 2474 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 49,139 psi | 89% | 2411 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 47,108 psi | 85% | 2372 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 49,719 psi | 90% | 2503 fps | 98.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 47,979 psi | 87% | 2516 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 49,487 psi | 90% | 2503 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 47,195 psi | 86% | 2395 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 47,558 psi | 86% | 2411 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 49,458 psi | 90% | 2520 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 47,021 psi | 85% | 2503 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 48,791 psi | 89% | 2497 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 42,511 psi | 77% | 2448 fps | 97.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,059 psi | 73% | 2402 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 35,360 psi | 64% | 2333 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,817 psi | 81% | 2559 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 48,312 psi | 88% | 2425 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 39,291 psi | 71% | 2388 fps | 96.2% |
| Bofors RP3 | <<locked>> | 86% | 47,137 psi | 86% | 2405 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 42,511 psi | 77% | 2448 fps | 97.2% |
| Bofors RP7 | <<locked>> | 90% | 47,587 psi | 86% | 2388 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 86% | 48,051 psi | 87% | 2421 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 47,587 psi | 86% | 2474 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 90% | 48,414 psi | 88% | 2438 fps | 98.3% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 47,587 psi | 86% | 2448 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 82% | 49,632 psi | 90% | 2418 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 48,907 psi | 89% | 2448 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 48,660 psi | 88% | 2448 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 47,326 psi | 86% | 2503 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,824 psi | 65% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 47,688 psi | 87% | 2379 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 49,501 psi | 90% | 2392 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 49,603 psi | 90% | 2395 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 49,516 psi | 90% | 2385 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 47,645 psi | 86% | 2415 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 49,371 psi | 90% | 2415 fps | 99.2% |
| IMR 4831 | <<locked>> | 96% | 48,559 psi | 88% | 2464 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 48,704 psi | 88% | 2434 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 49,661 psi | 90% | 2444 fps | 96.5% |
| Lovex D073.6 | <<locked>> | 82% | 48,530 psi | 88% | 2382 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 48,878 psi | 89% | 2346 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 49,545 psi | 90% | 2392 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 48,747 psi | 88% | 2408 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 49,574 psi | 90% | 2444 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 34,867 psi | 63% | 2254 fps | 97.7% |
| Norma 201 | <<locked>> | 82% | 48,051 psi | 87% | 2359 fps | 100% |
| Norma 202 | <<locked>> | 82% | 48,399 psi | 88% | 2356 fps | 100% |
| Norma 203B | <<locked>> | 86% | 49,617 psi | 90% | 2438 fps | 100% |
| Norma 204 | <<locked>> | 94% | 47,747 psi | 87% | 2457 fps | 97.8% |
| Norma MRPᴾ | <<locked>> | 100% | 44,657 psi | 81% | 2520 fps | 98.9% |
| Norma URP | <<locked>> | 94% | 47,529 psi | 86% | 2464 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 46,470 psi | 84% | 2418 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 49,327 psi | 90% | 2510 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,303 psi | 66% | 1503 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 48,167 psi | 87% | 2402 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 47,340 psi | 86% | 2464 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 46,659 psi | 85% | 2493 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 47,572 psi | 86% | 2493 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 47,224 psi | 86% | 2520 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 48,675 psi | 88% | 2359 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 47,311 psi | 86% | 2398 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 48,269 psi | 88% | 2431 fps | 96.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 47,326 psi | 86% | 2480 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 90% | 47,587 psi | 86% | 2388 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 48,747 psi | 88% | 2408 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 48,530 psi | 88% | 2382 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 49,545 psi | 90% | 2392 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 49,574 psi | 90% | 2444 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 48,428 psi | 88% | 2451 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 49,661 psi | 90% | 2411 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 47,514 psi | 86% | 2388 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 49,414 psi | 90% | 2297 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 49,661 psi | 90% | 2303 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 48,660 psi | 88% | 2365 fps | 99.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 46,891 psi | 85% | 2474 fps | 98.1% |
| Somchem S335 | <<locked>> | 82% | 48,907 psi | 89% | 2300 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 49,211 psi | 89% | 2398 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 47,776 psi | 87% | 2398 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 49,661 psi | 90% | 2425 fps | 96.2% |
| Somchem S365 | <<locked>> | 98% | 48,631 psi | 88% | 2503 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,022 psi | 87% | 2461 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 82% | 49,792 psi | 90% | 2283 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 48,269 psi | 88% | 2320 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 48,849 psi | 89% | 2339 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 48,617 psi | 88% | 2372 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 49,748 psi | 90% | 2454 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 41,582 psi | 75% | 2346 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 84% | 47,239 psi | 86% | 2346 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 48,834 psi | 89% | 2467 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,019 psi | 80% | 2464 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 45,571 psi | 83% | 2507 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 49,574 psi | 90% | 2434 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 47,587 psi | 86% | 2474 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,882 psi | 65% | 2441 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 47,181 psi | 86% | 2395 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 45,121 psi | 82% | 2405 fps | 97.3% |
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% | 2260 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,858 psi | 76% | 2257 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 27,992 psi | 51% | 2106 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 40,654 psi | 74% | 2267 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,747 psi | 54% | 2152 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 80% | 46,108 psi | 84% | 2369 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 39,349 psi | 71% | 2251 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 92% | 38,667 psi | 70% | 2316 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,119 psi | 76% | 2425 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 36,230 psi | 66% | 2274 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,102 psi | 71% | 2270 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,785 psi | 76% | 2323 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,385 psi | 55% | 2165 fps | 98% |
| Alliant Reloder-17 | 41 gr | 80% | 33,576 psi | 61% | 2267 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 92% | 38,159 psi | 69% | 2316 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 35,346 psi | 64% | 2310 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 22,075 psi | 40% | 1965 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 92% | 27,876 psi | 51% | 2142 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 84% | 25,962 psi | 47% | 2142 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,339 psi | 82% | 2382 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 36,883 psi | 67% | 2339 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 38,624 psi | 70% | 2274 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 35,346 psi | 64% | 2310 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 34,983 psi | 63% | 2169 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 39,566 psi | 72% | 2287 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 32,010 psi | 58% | 2192 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 80% | 35,128 psi | 64% | 2205 fps | 95.1% |
| Hodgdon H4831 | <<locked>> | 98% | 44,570 psi | 81% | 2398 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 46,528 psi | 84% | 2375 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,760 psi | 50% | 2073 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,728 psi | 78% | 2362 fps | 100% |
| Hodgdon Superformance | 44.4 gr | 82% | 33,402 psi | 61% | 2244 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,716 psi | 48% | 1309 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,701 psi | 81% | 2336 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 46,528 psi | 84% | 2352 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,350 psi | 75% | 2274 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,671 psi | 79% | 2293 fps | 98.4% |
| IMR 4350 | <<locked>> | 82% | 32,982 psi | 60% | 2152 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 36,260 psi | 66% | 2192 fps | 96.7% |
| IMR 4831 | <<locked>> | 80% | 29,109 psi | 53% | 2119 fps | 97.6% |
| IMR 4895 | <<locked>> | 80% | 42,801 psi | 78% | 2346 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 44,077 psi | 80% | 2359 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 45,469 psi | 83% | 2343 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,890 psi | 83% | 2303 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 41,133 psi | 75% | 2270 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 33,997 psi | 62% | 2156 fps | 97.5% |
| Lovex S070 | <<locked>> | 80% | 32,140 psi | 58% | 2139 fps | 95.8% |
| Lovex S071 | <<locked>> | 94% | 28,979 psi | 53% | 2129 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 45,382 psi | 82% | 2323 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,658 psi | 83% | 2320 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,205 psi | 75% | 2313 fps | 100% |
| Norma 204 | <<locked>> | 88% | 39,088 psi | 71% | 2313 fps | 95.8% |
| Norma MRP | <<locked>> | 90% | 32,242 psi | 59% | 2270 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 30,269 psi | 55% | 2152 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 80% | 40,814 psi | 74% | 2333 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 29,588 psi | 54% | 2142 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,963 psi | 49% | 1339 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,842 psi | 72% | 2270 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,266 psi | 80% | 2418 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,737 psi | 65% | 2313 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 29,573 psi | 54% | 2169 fps | 97.4% |
| ReloadSwiss RS 70 | 41.7 gr | 80% | 29,718 psi | 54% | 2175 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 80% | 43,091 psi | 78% | 2280 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 36,506 psi | 66% | 2231 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 42,699 psi | 77% | 2343 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 92% | 36,579 psi | 66% | 2293 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 34,983 psi | 63% | 2169 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,997 psi | 62% | 2156 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,469 psi | 83% | 2343 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,133 psi | 75% | 2270 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 32,140 psi | 58% | 2139 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,347 psi | 68% | 2277 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,528 psi | 84% | 2369 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,599 psi | 81% | 2346 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,601 psi | 85% | 2260 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,870 psi | 71% | 2156 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 32,924 psi | 60% | 2103 fps | 95.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 36,303 psi | 66% | 2290 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 46,238 psi | 84% | 2264 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,180 psi | 84% | 2356 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 37,333 psi | 68% | 2234 fps | 99.9% |
| Somchem S361 | <<locked>> | 96% | 46,630 psi | 85% | 2382 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 27,122 psi | 49% | 2116 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 32,634 psi | 59% | 2192 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 46,963 psi | 85% | 2247 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,786 psi | 78% | 2247 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,192 psi | 78% | 2264 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,447 psi | 64% | 2175 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 31,531 psi | 57% | 2149 fps | 98% |
| Vihtavuori N165 | <<locked>> | 94% | 34,490 psi | 63% | 2215 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 41,611 psi | 76% | 2267 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 31,082 psi | 56% | 2159 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 80% | 23,192 psi | 42% | 2024 fps | 95.7% |
| Vihtavuori N560 | <<locked>> | 98% | 42,757 psi | 78% | 2457 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,270 psi | 57% | 2129 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 32,227 psi | 58% | 2195 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 21,814 psi | 40% | 2028 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,976 psi | 80% | 2349 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 36,999 psi | 67% | 2264 fps | 95.2% |
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 99 powders for 7.5 x 55 Swiss loaded with the .308 | 220gr | Lapua ScenarL. Alliant Reloder-26 delivers the highest muzzle velocity at 2,559 fps; across all powders the maximum-charge window runs from 1,467 fps to 2,559 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 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 220.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 | 220gr | Lapua ScenarL 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.