Load Specifications
Load data in caliber .308 Marlin Express with .308 | 165gr | Nosler Ballistic Tip Hunting bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Alliant AR-Comp and Lovex D073.6.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 92% | 41,162 psi | 86% | 2333 fps | 99.7% |
| Accurate 2015 | <<locked>> | 92% | 41,713 psi | 87% | 2346 fps | 99.8% |
| Accurate 2460 | <<locked>> | 90% | 42,221 psi | 88% | 2375 fps | 98% |
| Accurate 2460 | <<locked>> | 90% | 42,366 psi | 89% | 2379 fps | 98.1% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,712 psi | 85% | 2398 fps | 99.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 41,263 psi | 86% | 2408 fps | 99.9% |
| Accurate 2520 | <<locked>> | 94% | 42,090 psi | 88% | 2411 fps | 97.7% |
| Accurate 2520 | <<locked>> | 94% | 42,250 psi | 88% | 2418 fps | 97.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,884 psi | 79% | 2369 fps | 98% |
| Accurate 4064ᴾ | <<locked>> | 100% | 38,421 psi | 80% | 2382 fps | 98.1% |
| Accurate LT-30 | <<locked>> | 84% | 41,843 psi | 87% | 2260 fps | 99% |
| Accurate LT-30 | <<locked>> | 84% | 42,395 psi | 89% | 2274 fps | 99.1% |
| Accurate LT-32 | <<locked>> | 84% | 42,279 psi | 88% | 2267 fps | 97.5% |
| Accurate LT-32 | <<locked>> | 84% | 42,859 psi | 90% | 2280 fps | 97.7% |
| ADI AR 2207 | <<locked>> | 82% | 41,698 psi | 87% | 2306 fps | 100% |
| ADI AR 2207 | <<locked>> | 82% | 41,989 psi | 88% | 2313 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 41,930 psi | 88% | 2385 fps | 99% |
| ADI AR 2219 | <<locked>> | 86% | 42,105 psi | 88% | 2392 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 94% | 43,149 psi | 90% | 2382 fps | 95.9% |
| Alliant AR-Comp | <<locked>> | 96% | 43,062 psi | 90% | 2441 fps | 100% |
| Alliant AR-Comp | <<locked>> | 96% | 43,250 psi | 90% | 2448 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 88% | 41,974 psi | 88% | 2356 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 88% | 42,221 psi | 88% | 2362 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 82% | 43,163 psi | 90% | 2313 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 42,786 psi | 89% | 2300 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 42,917 psi | 90% | 2306 fps | 99.3% |
| Hodgdon Benchmark | <<locked>> | 90% | 41,292 psi | 86% | 2306 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 90% | 41,437 psi | 87% | 2313 fps | 96.2% |
| Hodgdon BL-C2 | <<locked>> | 96% | 42,786 psi | 89% | 2438 fps | 96.6% |
| Hodgdon BL-C2 | <<locked>> | 96% | 43,265 psi | 90% | 2451 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 88% | 40,843 psi | 85% | 2365 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 88% | 41,017 psi | 86% | 2372 fps | 98.9% |
| Hodgdon H335 | <<locked>> | 88% | 41,263 psi | 86% | 2379 fps | 98.1% |
| Hodgdon H335 | <<locked>> | 88% | 41,756 psi | 87% | 2392 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,576 psi | 68% | 1470 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,692 psi | 68% | 1473 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 41,075 psi | 86% | 2428 fps | 99.4% |
| IMR 3031 | <<locked>> | 96% | 41,292 psi | 86% | 2438 fps | 99.5% |
| IMR 4198 | <<locked>> | 86% | 41,452 psi | 87% | 2300 fps | 100% |
| IMR 4198 | <<locked>> | 86% | 41,713 psi | 87% | 2306 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 43,149 psi | 90% | 2382 fps | 95.9% |
| Lovex D073.4 | <<locked>> | 84% | 42,815 psi | 89% | 2385 fps | 97.6% |
| Lovex D073.4 | <<locked>> | 84% | 43,018 psi | 90% | 2392 fps | 97.6% |
| Lovex D073.5 | <<locked>> | 90% | 41,945 psi | 88% | 2369 fps | 96.7% |
| Lovex D073.5 | <<locked>> | 90% | 42,467 psi | 89% | 2382 fps | 96.9% |
| Lovex D073.6 | <<locked>> | 98% | 42,743 psi | 89% | 2434 fps | 97.8% |
| Lovex D073.6 | <<locked>> | 98% | 42,975 psi | 90% | 2441 fps | 97.9% |
| Lovex S062ᴾ | <<locked>> | 100% | 41,930 psi | 88% | 2382 fps | 95.8% |
| Lovex S062ᴾ | <<locked>> | 100% | 42,424 psi | 89% | 2395 fps | 96% |
| Norma 200 | <<locked>> | 84% | 42,032 psi | 88% | 2336 fps | 100% |
| Norma 200 | <<locked>> | 84% | 42,337 psi | 88% | 2346 fps | 100% |
| Norma 201 | <<locked>> | 96% | 42,090 psi | 88% | 2369 fps | 95.8% |
| Norma 201 | <<locked>> | 96% | 42,192 psi | 88% | 2372 fps | 95.9% |
| Norma 202 | <<locked>> | 96% | 41,814 psi | 87% | 2388 fps | 98.2% |
| Norma 202 | <<locked>> | 96% | 41,959 psi | 88% | 2395 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,372 psi | 68% | 1503 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,460 psi | 68% | 1506 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 43,294 psi | 90% | 2385 fps | 97.5% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 40,915 psi | 85% | 2349 fps | 97% |
| Rottweil R 901 | <<locked>> | 92% | 40,857 psi | 85% | 2336 fps | 97.8% |
| Rottweil R 901 | <<locked>> | 92% | 41,075 psi | 86% | 2343 fps | 97.8% |
| Rottweil R 902 | <<locked>> | 98% | 42,192 psi | 88% | 2362 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 98% | 42,279 psi | 88% | 2369 fps | 95.9% |
| Shooters World AR Plus | <<locked>> | 84% | 42,815 psi | 89% | 2385 fps | 97.6% |
| Shooters World AR Plus | <<locked>> | 84% | 43,018 psi | 90% | 2392 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 98% | 42,743 psi | 89% | 2434 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 98% | 42,975 psi | 90% | 2441 fps | 97.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 41,930 psi | 88% | 2382 fps | 95.8% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 42,424 psi | 89% | 2395 fps | 96% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 42,293 psi | 88% | 2388 fps | 98.2% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 42,830 psi | 89% | 2398 fps | 98.3% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 42,902 psi | 90% | 2362 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 43,120 psi | 90% | 2369 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 42,424 psi | 89% | 2306 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 42,931 psi | 90% | 2320 fps | 98.2% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 40,814 psi | 85% | 2300 fps | 98.7% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,379 psi | 86% | 2313 fps | 98.8% |
| Somchem S321 | <<locked>> | 90% | 40,944 psi | 86% | 2375 fps | 95.8% |
| Somchem S335 | <<locked>> | 94% | 41,234 psi | 86% | 2313 fps | 98.7% |
| Somchem S335 | <<locked>> | 94% | 41,423 psi | 87% | 2320 fps | 98.7% |
| Vihtavuori N120 | <<locked>> | 82% | 41,829 psi | 87% | 2267 fps | 100% |
| Vihtavuori N120 | <<locked>> | 82% | 42,119 psi | 88% | 2274 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 42,815 psi | 89% | 2316 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 43,062 psi | 90% | 2323 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 41,698 psi | 87% | 2313 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 94% | 42,264 psi | 88% | 2326 fps | 99.7% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,003 psi | 88% | 2402 fps | 99.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,583 psi | 89% | 2415 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 98% | 42,105 psi | 88% | 2372 fps | 98.5% |
| Vihtavuori N140 | <<locked>> | 98% | 42,264 psi | 88% | 2375 fps | 98.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,192 psi | 90% | 2405 fps | 98.3% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,279 psi | 90% | 2411 fps | 98.3% |
| Winchester 748 | <<locked>> | 94% | 41,452 psi | 87% | 2408 fps | 96.5% |
| Winchester 748 | <<locked>> | 94% | 41,872 psi | 87% | 2421 fps | 96.7% |
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% | 28,282 psi | 59% | 2077 fps | 97.1% |
| Accurate 2015 | <<locked>> | 80% | 28,514 psi | 60% | 2087 fps | 97.2% |
| Accurate 2460 | <<locked>> | 82% | 32,155 psi | 67% | 2182 fps | 95.2% |
| Accurate 2460 | <<locked>> | 82% | 32,677 psi | 68% | 2198 fps | 95.5% |
| Accurate 2495 | <<locked>> | 82% | 22,495 psi | 47% | 2005 fps | 95.1% |
| Accurate 2495 | <<locked>> | 82% | 22,669 psi | 47% | 2011 fps | 95.2% |
| Accurate 2520 | <<locked>> | 88% | 34,301 psi | 72% | 2270 fps | 95.6% |
| Accurate 2520 | <<locked>> | 88% | 34,418 psi | 72% | 2274 fps | 95.7% |
| Accurate 4064 | <<locked>> | 92% | 29,486 psi | 62% | 2195 fps | 95.3% |
| Accurate 4064 | <<locked>> | 92% | 29,689 psi | 62% | 2201 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 37,101 psi | 78% | 2178 fps | 98.1% |
| Accurate LT-30 | <<locked>> | 80% | 37,318 psi | 78% | 2185 fps | 98.2% |
| Accurate LT-32 | <<locked>> | 80% | 37,492 psi | 78% | 2182 fps | 96.3% |
| Accurate LT-32 | <<locked>> | 80% | 37,710 psi | 79% | 2188 fps | 96.4% |
| ADI AR 2207 | <<locked>> | 80% | 39,146 psi | 82% | 2264 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 39,450 psi | 82% | 2274 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,548 psi | 72% | 2244 fps | 97.4% |
| ADI AR 2219 | <<locked>> | 80% | 34,751 psi | 73% | 2254 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 92% | 40,654 psi | 85% | 2339 fps | 95.2% |
| Alliant AR-Comp | 28.4 gr | 80% | 26,223 psi | 55% | 2096 fps | 98.7% |
| Alliant AR-Comp | 28.4 gr | 80% | 26,411 psi | 55% | 2103 fps | 98.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,953 psi | 69% | 2192 fps | 99.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,185 psi | 69% | 2198 fps | 99.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,625 psi | 85% | 2274 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,186 psi | 74% | 2169 fps | 97.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,621 psi | 74% | 2178 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 38,624 psi | 81% | 2257 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 88% | 39,117 psi | 82% | 2270 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 92% | 37,550 psi | 78% | 2346 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 92% | 37,681 psi | 79% | 2349 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 31,662 psi | 66% | 2182 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 80% | 31,850 psi | 67% | 2188 fps | 96.5% |
| Hodgdon H335 | <<locked>> | 80% | 31,720 psi | 66% | 2188 fps | 95.2% |
| Hodgdon H335 | <<locked>> | 80% | 31,879 psi | 67% | 2195 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,902 psi | 50% | 1309 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,033 psi | 50% | 1312 fps | 100% |
| IMR 3031 | 29 gr | 82% | 26,513 psi | 55% | 2106 fps | 95.1% |
| IMR 3031 | 29 gr | 82% | 26,672 psi | 56% | 2113 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 34,708 psi | 73% | 2178 fps | 99.8% |
| IMR 4198 | <<locked>> | 80% | 34,925 psi | 73% | 2188 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 92% | 40,654 psi | 85% | 2339 fps | 95.2% |
| Lovex D073.4 | <<locked>> | 80% | 37,101 psi | 78% | 2280 fps | 96.1% |
| Lovex D073.4 | <<locked>> | 80% | 37,289 psi | 78% | 2290 fps | 96.2% |
| Lovex D073.5 | <<locked>> | 86% | 36,796 psi | 77% | 2277 fps | 95.3% |
| Lovex D073.5 | <<locked>> | 86% | 36,985 psi | 77% | 2283 fps | 95.4% |
| Lovex D073.6 | 34.7 gr | 92% | 34,737 psi | 73% | 2290 fps | 95.7% |
| Lovex D073.6 | 34 gr | 90% | 32,851 psi | 69% | 2254 fps | 95.1% |
| Lovex S062 | <<locked>> | 98% | 39,465 psi | 82% | 2339 fps | 95.1% |
| Lovex S062 | <<locked>> | 98% | 39,624 psi | 83% | 2346 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 37,202 psi | 78% | 2254 fps | 99.9% |
| Norma 200 | <<locked>> | 80% | 37,449 psi | 78% | 2264 fps | 100% |
| Norma 201 | <<locked>> | 94% | 39,552 psi | 83% | 2323 fps | 95.1% |
| Norma 201 | <<locked>> | 94% | 39,740 psi | 83% | 2329 fps | 95.2% |
| Norma 202 | <<locked>> | 88% | 32,445 psi | 68% | 2211 fps | 95.7% |
| Norma 202 | <<locked>> | 86% | 30,690 psi | 64% | 2175 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,859 psi | 50% | 1339 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,989 psi | 50% | 1345 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 35,810 psi | 75% | 2251 fps | 95.5% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 35,984 psi | 75% | 2257 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 84% | 32,242 psi | 67% | 2162 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 84% | 32,460 psi | 68% | 2172 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 96% | 39,653 psi | 83% | 2316 fps | 95% |
| Rottweil R 902 | <<locked>> | 96% | 39,842 psi | 83% | 2323 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 80% | 37,101 psi | 78% | 2280 fps | 96.1% |
| Shooters World AR Plus | <<locked>> | 80% | 37,289 psi | 78% | 2290 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 92% | 34,737 psi | 73% | 2290 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 90% | 32,851 psi | 69% | 2254 fps | 95.1% |
| Shooters World Precision | <<locked>> | 98% | 39,465 psi | 82% | 2339 fps | 95.1% |
| Shooters World Precision | <<locked>> | 98% | 39,624 psi | 83% | 2346 fps | 95.2% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,766 psi | 73% | 2247 fps | 96.3% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,954 psi | 73% | 2254 fps | 96.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,301 psi | 70% | 2185 fps | 97.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,547 psi | 70% | 2195 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 31,372 psi | 66% | 2100 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 31,546 psi | 66% | 2106 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 28,616 psi | 60% | 2057 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 28,761 psi | 60% | 2064 fps | 95.3% |
| Somchem S321 | <<locked>> | 88% | 38,247 psi | 80% | 2326 fps | 95% |
| Somchem S335 | <<locked>> | 82% | 28,689 psi | 60% | 2060 fps | 95.1% |
| Somchem S335 | <<locked>> | 82% | 28,877 psi | 60% | 2070 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 39,320 psi | 82% | 2228 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 39,537 psi | 83% | 2234 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,531 psi | 66% | 2110 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 80% | 31,763 psi | 66% | 2119 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 80% | 27,427 psi | 57% | 2028 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 80% | 27,601 psi | 58% | 2034 fps | 96.6% |
| Vihtavuori N135 | <<locked>> | 82% | 24,178 psi | 51% | 2018 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 82% | 24,381 psi | 51% | 2028 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 88% | 30,922 psi | 65% | 2156 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 88% | 31,096 psi | 65% | 2162 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 90% | 31,604 psi | 66% | 2185 fps | 95% |
| Vihtavuori N540 | <<locked>> | 90% | 31,749 psi | 66% | 2192 fps | 95.1% |
| Winchester 748 | <<locked>> | 92% | 38,725 psi | 81% | 2359 fps | 95.7% |
| Winchester 748 | <<locked>> | 90% | 36,593 psi | 76% | 2320 fps | 95.1% |
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 94 powders for .308 Marlin Express loaded with the .308 | 165gr | Nosler Ballistic Tip Hunting. Hodgdon BL-C2 delivers the highest muzzle velocity at 2,451 fps; across all powders the maximum-charge window runs from 1,470 fps to 2,451 fps. Accurate 2495 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 68–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 2495, Accurate 4064 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. IMR 3031, Alliant AR-Comp, Lovex D073.6 rank at the top here: for .308 Marlin Express with the .308 | 165gr | Nosler Ballistic Tip Hunting 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.