Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 220gr | Nosler Custom Competition 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, Alliant Reloder-16 and Hodgdon Superformance.
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% | 48,138 psi | 87% | 2323 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 47,021 psi | 85% | 2333 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,292 psi | 75% | 2359 fps | 98.9% |
| Accurate 4064 | <<locked>> | 86% | 48,153 psi | 87% | 2369 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 47,195 psi | 86% | 2454 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 48,588 psi | 88% | 2398 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 49,400 psi | 90% | 2398 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 49,139 psi | 89% | 2487 fps | 98% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 47,471 psi | 86% | 2503 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 48,878 psi | 89% | 2487 fps | 98.1% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 48,878 psi | 89% | 2487 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 49,472 psi | 90% | 2418 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 49,792 psi | 90% | 2438 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 49,066 psi | 89% | 2507 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 49,443 psi | 90% | 2530 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 48,153 psi | 87% | 2484 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 41,945 psi | 76% | 2431 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,436 psi | 72% | 2385 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 34,925 psi | 63% | 2313 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,947 psi | 80% | 2539 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 47,805 psi | 87% | 2411 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 38,725 psi | 70% | 2372 fps | 95.9% |
| Bofors RP3 | <<locked>> | 88% | 49,792 psi | 90% | 2434 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 41,945 psi | 76% | 2431 fps | 97% |
| Bofors RP7 | <<locked>> | 90% | 47,137 psi | 86% | 2375 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 49,835 psi | 90% | 2421 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 47,268 psi | 86% | 2402 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 46,804 psi | 85% | 2457 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 90% | 47,645 psi | 86% | 2418 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 82% | 49,037 psi | 89% | 2405 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 48,443 psi | 88% | 2434 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 48,153 psi | 87% | 2438 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 46,746 psi | 85% | 2487 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,766 psi | 65% | 1460 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 47,137 psi | 86% | 2365 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 49,095 psi | 89% | 2382 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 49,066 psi | 89% | 2382 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 49,052 psi | 89% | 2372 fps | 99.1% |
| IMR 4350 | <<locked>> | 94% | 46,949 psi | 85% | 2398 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 48,617 psi | 88% | 2398 fps | 99% |
| IMR 4831 | <<locked>> | 96% | 48,109 psi | 87% | 2451 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 48,153 psi | 87% | 2421 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 49,037 psi | 89% | 2428 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 82% | 47,950 psi | 87% | 2372 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 48,341 psi | 88% | 2329 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 48,994 psi | 89% | 2379 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 48,298 psi | 88% | 2398 fps | 99.7% |
| Lovex S070 | <<locked>> | 94% | 48,791 psi | 89% | 2428 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 34,461 psi | 63% | 2241 fps | 97.5% |
| Norma 201 | <<locked>> | 82% | 47,485 psi | 86% | 2346 fps | 100% |
| Norma 202 | <<locked>> | 82% | 48,095 psi | 87% | 2349 fps | 100% |
| Norma 203B | <<locked>> | 86% | 49,095 psi | 89% | 2425 fps | 100% |
| Norma 204 | <<locked>> | 94% | 47,123 psi | 86% | 2441 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 44,063 psi | 80% | 2503 fps | 98.7% |
| Norma URP | <<locked>> | 94% | 46,775 psi | 85% | 2448 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 49,095 psi | 89% | 2448 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 48,689 psi | 88% | 2497 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,245 psi | 66% | 1496 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 47,674 psi | 87% | 2388 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 46,746 psi | 85% | 2448 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 49,313 psi | 89% | 2526 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 46,775 psi | 85% | 2480 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 49,748 psi | 90% | 2549 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 48,095 psi | 87% | 2346 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 49,690 psi | 90% | 2425 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 47,921 psi | 87% | 2418 fps | 96.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 46,630 psi | 85% | 2461 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 47,137 psi | 86% | 2375 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 48,298 psi | 88% | 2398 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 47,950 psi | 87% | 2372 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 48,994 psi | 89% | 2379 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 48,791 psi | 89% | 2428 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 47,906 psi | 87% | 2441 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 49,139 psi | 89% | 2398 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 47,007 psi | 85% | 2375 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 48,820 psi | 89% | 2283 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 49,124 psi | 89% | 2290 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 47,921 psi | 87% | 2349 fps | 99% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 46,209 psi | 84% | 2457 fps | 97.9% |
| Somchem S335 | <<locked>> | 82% | 48,370 psi | 88% | 2287 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 48,689 psi | 88% | 2385 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 47,239 psi | 86% | 2385 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 49,139 psi | 89% | 2408 fps | 96% |
| Somchem S365 | <<locked>> | 98% | 47,805 psi | 87% | 2490 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 47,340 psi | 86% | 2444 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 82% | 49,182 psi | 89% | 2270 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 47,964 psi | 87% | 2313 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 48,283 psi | 88% | 2326 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 48,153 psi | 87% | 2362 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 48,965 psi | 89% | 2438 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 41,031 psi | 74% | 2329 fps | 97% |
| Vihtavuori N540 | <<locked>> | 86% | 49,516 psi | 90% | 2369 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 48,095 psi | 87% | 2451 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,265 psi | 79% | 2448 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 48,631 psi | 88% | 2415 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 46,804 psi | 85% | 2457 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,404 psi | 64% | 2425 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 49,806 psi | 90% | 2425 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 44,570 psi | 81% | 2388 fps | 97.1% |
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% | 42,322 psi | 77% | 2247 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,394 psi | 75% | 2241 fps | 97.1% |
| Accurate 3100 | <<locked>> | 88% | 27,601 psi | 50% | 2093 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 40,059 psi | 73% | 2254 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,225 psi | 53% | 2136 fps | 97.6% |
| ADI AR 2206H | <<locked>> | 80% | 45,571 psi | 83% | 2352 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 38,870 psi | 71% | 2234 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 38,305 psi | 70% | 2303 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,597 psi | 75% | 2408 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 38,029 psi | 69% | 2303 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 38,029 psi | 69% | 2303 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,537 psi | 70% | 2254 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,234 psi | 75% | 2310 fps | 99.9% |
| Alliant Reloder-16 | 37.6 gr | 80% | 29,936 psi | 54% | 2149 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,156 psi | 60% | 2254 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 37,579 psi | 68% | 2297 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 37,101 psi | 67% | 2339 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 21,770 psi | 40% | 1952 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 94% | 29,138 psi | 53% | 2172 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 84% | 25,672 psi | 47% | 2126 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,846 psi | 81% | 2369 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 36,347 psi | 66% | 2323 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 38,319 psi | 70% | 2264 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 37,101 psi | 67% | 2339 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 34,548 psi | 63% | 2152 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,673 psi | 85% | 2379 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,044 psi | 71% | 2270 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 31,589 psi | 57% | 2175 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 37,028 psi | 67% | 2238 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 45,977 psi | 83% | 2359 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,543 psi | 50% | 2064 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,206 psi | 77% | 2349 fps | 100% |
| Hodgdon Superformance | 43.9 gr | 82% | 33,054 psi | 60% | 2228 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,571 psi | 48% | 1302 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,179 psi | 80% | 2323 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 45,861 psi | 83% | 2339 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,828 psi | 74% | 2260 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,178 psi | 78% | 2280 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 34,519 psi | 63% | 2178 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 36,056 psi | 65% | 2182 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 28,660 psi | 52% | 2103 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 42,250 psi | 77% | 2333 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 46,325 psi | 84% | 2388 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 80% | 44,860 psi | 81% | 2329 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,643 psi | 83% | 2293 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 40,814 psi | 74% | 2260 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 33,504 psi | 61% | 2142 fps | 97.3% |
| Lovex S070 | <<locked>> | 80% | 31,676 psi | 57% | 2123 fps | 95.5% |
| Lovex S071 | <<locked>> | 94% | 28,384 psi | 52% | 2113 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 44,759 psi | 81% | 2306 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,063 psi | 82% | 2306 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,611 psi | 74% | 2300 fps | 100% |
| Norma 204 | <<locked>> | 88% | 38,696 psi | 70% | 2297 fps | 95.5% |
| Norma MRP | <<locked>> | 90% | 31,923 psi | 58% | 2257 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 29,849 psi | 54% | 2139 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 40,321 psi | 73% | 2320 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 80% | 29,211 psi | 53% | 2126 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,064 psi | 49% | 1339 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,407 psi | 72% | 2254 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,642 psi | 79% | 2402 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,302 psi | 64% | 2300 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 29,167 psi | 53% | 2152 fps | 97.2% |
| ReloadSwiss RS 70 | 41.2 gr | 80% | 29,399 psi | 53% | 2159 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 80% | 42,496 psi | 77% | 2267 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 35,940 psi | 65% | 2215 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 42,308 psi | 77% | 2329 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 92% | 36,216 psi | 66% | 2280 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 34,548 psi | 63% | 2152 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,504 psi | 61% | 2142 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,860 psi | 81% | 2329 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,814 psi | 74% | 2260 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 31,676 psi | 57% | 2123 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,883 psi | 67% | 2264 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,759 psi | 83% | 2349 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,063 psi | 80% | 2333 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,948 psi | 83% | 2247 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,334 psi | 70% | 2142 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 32,445 psi | 59% | 2090 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 35,926 psi | 65% | 2277 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 45,701 psi | 83% | 2251 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,701 psi | 83% | 2346 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 36,825 psi | 67% | 2221 fps | 99.9% |
| Somchem S361 | <<locked>> | 96% | 46,079 psi | 84% | 2365 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 26,701 psi | 48% | 2103 fps | 99.3% |
| Somchem S385 | <<locked>> | 90% | 34,229 psi | 62% | 2221 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 46,325 psi | 84% | 2234 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,134 psi | 76% | 2234 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,641 psi | 77% | 2251 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,954 psi | 63% | 2162 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 31,082 psi | 56% | 2133 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 96% | 36,230 psi | 66% | 2244 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 41,118 psi | 75% | 2254 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 30,647 psi | 56% | 2142 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 22,974 psi | 42% | 2011 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,951 psi | 56% | 2116 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 31,807 psi | 58% | 2178 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 21,553 psi | 39% | 2011 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,468 psi | 79% | 2336 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 38,957 psi | 71% | 2293 fps | 95.7% |
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 | Nosler Custom Competition. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,549 fps; across all powders the maximum-charge window runs from 1,460 fps to 2,549 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 1:11.5 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, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for 7.5 x 55 Swiss with the .308 | 220gr | Nosler Custom Competition 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.