Load Specifications
Load data in caliber 7 mm-08 Rem. with .285 | 173gr | Prvi Partizan SP bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Hodgdon Superformance and ReloadSwiss RS 60.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 53,867 psi | 89% | 2388 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 52,170 psi | 87% | 2415 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 53,635 psi | 89% | 2470 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 51,213 psi | 85% | 2408 fps | 96.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 38,841 psi | 65% | 2320 fps | 96% |
| Accurate 4064 | <<locked>> | 90% | 51,938 psi | 86% | 2454 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 50,894 psi | 85% | 2523 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 86% | 52,634 psi | 87% | 2480 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 53,403 psi | 89% | 2477 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 51,648 psi | 86% | 2434 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 52,576 psi | 87% | 2415 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 51,909 psi | 86% | 2585 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 53,548 psi | 89% | 2503 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,201 psi | 90% | 2523 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,837 psi | 88% | 2579 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,751 psi | 89% | 2612 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,666 psi | 63% | 2352 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,698 psi | 69% | 2490 fps | 98.1% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 52,330 psi | 87% | 2497 fps | 99.7% |
| Bofors RP3 | <<locked>> | 92% | 53,983 psi | 90% | 2516 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,157 psi | 90% | 2490 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 53,679 psi | 89% | 2421 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,447 psi | 90% | 2513 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 52,591 psi | 87% | 2552 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 51,445 psi | 85% | 2480 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 98% | 53,882 psi | 90% | 2572 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 94% | 51,576 psi | 86% | 2490 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 86% | 53,156 psi | 88% | 2490 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,950 psi | 81% | 2467 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 52,272 psi | 87% | 2520 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 51,068 psi | 85% | 2556 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,578 psi | 59% | 1493 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 51,126 psi | 85% | 2448 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 53,214 psi | 88% | 2474 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 53,142 psi | 88% | 2464 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,403 psi | 89% | 2451 fps | 98% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,244 psi | 90% | 2513 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 94% | 52,765 psi | 88% | 2470 fps | 97.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,634 psi | 86% | 2520 fps | 99.7% |
| IMR 4895 | <<locked>> | 88% | 52,112 psi | 87% | 2503 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 51,648 psi | 86% | 2434 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 52,330 psi | 87% | 2464 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 52,489 psi | 87% | 2418 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 52,939 psi | 88% | 2464 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 52,156 psi | 87% | 2467 fps | 98.9% |
| Lovex S070 | <<locked>> | 98% | 52,765 psi | 88% | 2497 fps | 98.2% |
| Norma 201 | <<locked>> | 86% | 51,576 psi | 86% | 2434 fps | 100% |
| Norma 202 | <<locked>> | 86% | 51,953 psi | 86% | 2434 fps | 100% |
| Norma 203B | <<locked>> | 90% | 53,432 psi | 89% | 2510 fps | 100% |
| Norma 204 | <<locked>> | 98% | 51,082 psi | 85% | 2503 fps | 95.8% |
| Norma URPᴾ | <<locked>> | 100% | 53,679 psi | 89% | 2562 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 90% | 53,505 psi | 89% | 2533 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,518 psi | 87% | 2562 fps | 98.8% |
| Ramshot TAC | <<locked>> | 84% | 51,851 psi | 86% | 2454 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 84% | 51,213 psi | 85% | 2470 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 52,620 psi | 87% | 2441 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,766 psi | 59% | 1526 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 51,764 psi | 86% | 2464 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,230 psi | 90% | 2579 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 53,635 psi | 89% | 2612 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,259 psi | 90% | 2598 fps | 99.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,012 psi | 90% | 2621 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 52,663 psi | 87% | 2415 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 51,982 psi | 86% | 2431 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 53,476 psi | 89% | 2503 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,157 psi | 90% | 2490 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 52,156 psi | 87% | 2467 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,330 psi | 87% | 2464 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 52,939 psi | 88% | 2464 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 52,765 psi | 88% | 2497 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 51,793 psi | 86% | 2516 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 53,534 psi | 89% | 2480 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,259 psi | 90% | 2500 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,272 psi | 89% | 2379 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 52,939 psi | 88% | 2375 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 52,373 psi | 87% | 2425 fps | 97.8% |
| Somchem S321 | <<locked>> | 82% | 52,750 psi | 88% | 2467 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 52,489 psi | 87% | 2379 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 53,388 psi | 89% | 2477 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 54,085 psi | 90% | 2503 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,283 psi | 80% | 2520 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 45,005 psi | 75% | 2415 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 82% | 52,939 psi | 88% | 2343 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 53,490 psi | 89% | 2365 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 51,619 psi | 86% | 2398 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 52,533 psi | 87% | 2418 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 51,909 psi | 86% | 2441 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 52,808 psi | 88% | 2513 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 51,996 psi | 86% | 2434 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 53,853 psi | 89% | 2457 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 52,054 psi | 86% | 2523 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,901 psi | 68% | 2418 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 53,345 psi | 89% | 2500 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 51,996 psi | 86% | 2480 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,273 psi | 90% | 2575 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,475 psi | 56% | 2346 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,288 psi | 90% | 2513 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 47,558 psi | 79% | 2310 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,030 psi | 67% | 2247 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,992 psi | 78% | 2382 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 45,049 psi | 75% | 2313 fps | 95.5% |
| Accurate 3100 | <<locked>> | 98% | 36,172 psi | 60% | 2270 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 37,869 psi | 63% | 2244 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 31,531 psi | 52% | 2182 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 43,714 psi | 73% | 2346 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 37,260 psi | 62% | 2215 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,759 psi | 76% | 2349 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 46,079 psi | 77% | 2333 fps | 100% |
| Alliant Power Pro 2000-MR | 37.1 gr | 80% | 39,668 psi | 66% | 2375 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,651 psi | 61% | 2234 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,450 psi | 66% | 2290 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,430 psi | 54% | 2198 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 31,618 psi | 53% | 2208 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 27,818 psi | 46% | 2116 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 94% | 33,982 psi | 56% | 2323 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,931 psi | 71% | 2352 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 36,332 psi | 60% | 2241 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 42,424 psi | 70% | 2306 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,674 psi | 79% | 2339 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,498 psi | 74% | 2372 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,820 psi | 81% | 2497 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 80% | 37,289 psi | 62% | 2244 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 90% | 41,713 psi | 69% | 2379 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 90% | 45,687 psi | 76% | 2398 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 44,077 psi | 73% | 2352 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 27,833 psi | 46% | 2064 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,089 psi | 67% | 2333 fps | 99.6% |
| Hodgdon Superformance | 44.4 gr | 92% | 44,469 psi | 74% | 2448 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,324 psi | 44% | 1329 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,351 psi | 70% | 2313 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 43,627 psi | 72% | 2346 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,117 psi | 65% | 2244 fps | 98.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,408 psi | 69% | 2257 fps | 95.4% |
| IMR 4350 | <<locked>> | 92% | 42,279 psi | 70% | 2329 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 41,524 psi | 69% | 2290 fps | 95.4% |
| IMR 4831 | <<locked>> | 84% | 30,835 psi | 51% | 2152 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 40,393 psi | 67% | 2316 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 45,759 psi | 76% | 2349 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,844 psi | 71% | 2329 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,005 psi | 73% | 2290 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 39,102 psi | 65% | 2251 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 36,056 psi | 60% | 2195 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 38,812 psi | 64% | 2270 fps | 95% |
| Norma 201 | <<locked>> | 80% | 42,699 psi | 71% | 2300 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 42,975 psi | 71% | 2306 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,812 psi | 64% | 2280 fps | 98.8% |
| Norma 204 | <<locked>> | 96% | 47,790 psi | 79% | 2454 fps | 95% |
| Norma URP | <<locked>> | 84% | 32,111 psi | 53% | 2185 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 38,290 psi | 64% | 2293 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 38,116 psi | 63% | 2316 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 45,484 psi | 76% | 2359 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,078 psi | 75% | 2375 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,139 psi | 82% | 2392 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,876 psi | 45% | 1365 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 37,608 psi | 62% | 2228 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,191 psi | 68% | 2379 fps | 98.8% |
| ReloadSwiss RS 60 | 36.5 gr | 80% | 33,649 psi | 56% | 2267 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 33,678 psi | 56% | 2251 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 36,361 psi | 60% | 2306 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 46,978 psi | 78% | 2336 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,959 psi | 68% | 2264 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 34,113 psi | 57% | 2188 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 42,424 psi | 70% | 2306 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,056 psi | 60% | 2195 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,844 psi | 71% | 2329 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,102 psi | 65% | 2251 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 38,812 psi | 64% | 2270 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,954 psi | 58% | 2231 fps | 97.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,714 psi | 73% | 2333 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,047 psi | 70% | 2316 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,251 psi | 74% | 2257 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,767 psi | 61% | 2142 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 40,350 psi | 67% | 2241 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 49,487 psi | 82% | 2421 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,714 psi | 73% | 2257 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,700 psi | 73% | 2336 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 34,940 psi | 58% | 2192 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 25,382 psi | 42% | 2051 fps | 96% |
| Somchem S385 | <<locked>> | 98% | 42,090 psi | 70% | 2365 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 49,966 psi | 83% | 2306 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,570 psi | 74% | 2251 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,176 psi | 67% | 2241 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,727 psi | 68% | 2251 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,257 psi | 55% | 2139 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 31,647 psi | 53% | 2146 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 45,861 psi | 76% | 2346 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 39,349 psi | 65% | 2247 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 32,953 psi | 55% | 2192 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 90% | 29,646 psi | 49% | 2182 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,646 psi | 49% | 2080 fps | 96.6% |
| Winchester 748 | <<locked>> | 80% | 45,208 psi | 75% | 2385 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 41,713 psi | 69% | 2379 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 94% | 27,717 psi | 46% | 2178 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,568 psi | 69% | 2323 fps | 99.5% |
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 97 powders for 7 mm-08 Rem. loaded with the .285 | 173gr | Prvi Partizan SP. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,621 fps; across all powders the maximum-charge window runs from 1,493 fps to 2,621 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 173.0 gr projectile in 0.285" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-16, Alliant Reloder-23 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. Alliant Power Pro 2000-MR, Hodgdon Superformance, ReloadSwiss RS 60 rank at the top here: for 7 mm-08 Rem. with the .285 | 173gr | Prvi Partizan SP 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.