Load Specifications
Load data in caliber .308 Win. with .308 | 190gr | Hornady Sub-X bullet and 93 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, ReloadSwiss RS 52 and Hodgdon CFE223.
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>> | 90% | 51,779 psi | 86% | 2379 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 52,344 psi | 87% | 2454 fps | 98.6% |
| Accurate 2230 | <<locked>> | 82% | 52,649 psi | 87% | 2461 fps | 98.9% |
| Accurate 2460 | <<locked>> | 88% | 53,563 psi | 89% | 2441 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 51,155 psi | 85% | 2425 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 51,242 psi | 85% | 2448 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 54,172 psi | 90% | 2500 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 52,663 psi | 87% | 2333 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 53,084 psi | 88% | 2352 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 53,954 psi | 90% | 2493 fps | 99.3% |
| ADI AR 2207 | <<locked>> | 82% | 53,983 psi | 90% | 2349 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 51,634 psi | 86% | 2444 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 84% | 52,359 psi | 87% | 2438 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 53,374 psi | 89% | 2454 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 92% | 52,199 psi | 87% | 2438 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 51,532 psi | 86% | 2503 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 53,142 psi | 88% | 2582 fps | 98.7% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,214 psi | 88% | 2500 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 86% | 52,069 psi | 87% | 2385 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 51,097 psi | 85% | 2477 fps | 98.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 41,365 psi | 69% | 2365 fps | 95.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,239 psi | 78% | 2500 fps | 98.9% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 54,433 psi | 90% | 2372 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 53,214 psi | 88% | 2503 fps | 98.5% |
| Bofors RP3ᴾ | <<locked>> | 100% | 53,505 psi | 89% | 2516 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 90% | 52,794 psi | 88% | 2405 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 92% | 51,706 psi | 86% | 2484 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 90% | 53,243 psi | 88% | 2559 fps | 99% |
| Hodgdon H322 | <<locked>> | 88% | 54,331 psi | 90% | 2464 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 51,837 psi | 86% | 2444 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 52,054 psi | 86% | 2477 fps | 97.7% |
| Hodgdon H4198 | <<locked>> | 82% | 54,273 psi | 90% | 2369 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 54,346 psi | 90% | 2503 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 37,521 psi | 62% | 2267 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 52,533 psi | 87% | 2530 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,214 psi | 57% | 1450 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 52,359 psi | 87% | 2461 fps | 99.4% |
| IMR 3031 | <<locked>> | 94% | 52,924 psi | 88% | 2490 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 54,433 psi | 90% | 2474 fps | 99.1% |
| IMR 4198 | <<locked>> | 86% | 52,881 psi | 88% | 2352 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 52,301 psi | 87% | 2507 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 92% | 53,374 psi | 89% | 2454 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 82% | 53,708 psi | 89% | 2448 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 53,287 psi | 89% | 2444 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 52,402 psi | 87% | 2474 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 51,300 psi | 85% | 2388 fps | 99% |
| Lovex S062 | <<locked>> | 98% | 53,214 psi | 88% | 2467 fps | 99.8% |
| Norma 200 | <<locked>> | 82% | 52,025 psi | 86% | 2362 fps | 100% |
| Norma 201 | <<locked>> | 94% | 52,634 psi | 87% | 2448 fps | 99.8% |
| Norma 202 | <<locked>> | 94% | 52,794 psi | 88% | 2454 fps | 100% |
| Norma 203B | <<locked>> | 98% | 53,606 psi | 89% | 2513 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 98% | 53,867 psi | 89% | 2533 fps | 99.2% |
| Ramshot TAC | <<locked>> | 92% | 54,143 psi | 90% | 2467 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 92% | 52,765 psi | 88% | 2484 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 88% | 51,459 psi | 85% | 2415 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,519 psi | 57% | 1486 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 53,185 psi | 88% | 2444 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 53,127 psi | 88% | 2464 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 54,186 psi | 90% | 2582 fps | 99.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 50,473 psi | 84% | 2559 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 54,041 psi | 90% | 2438 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 53,040 psi | 88% | 2444 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 49,835 psi | 83% | 2457 fps | 99.3% |
| Shooters World AR Plus | <<locked>> | 82% | 53,708 psi | 89% | 2448 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 52,402 psi | 87% | 2474 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 53,214 psi | 88% | 2467 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 53,287 psi | 89% | 2418 fps | 99.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 53,882 psi | 90% | 2123 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 52,779 psi | 88% | 2448 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 51,721 psi | 86% | 2513 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 53,040 psi | 88% | 2402 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 51,851 psi | 86% | 2444 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 52,257 psi | 87% | 2467 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 52,098 psi | 87% | 2362 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 54,230 psi | 90% | 2395 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 51,184 psi | 85% | 2448 fps | 99.8% |
| Somchem S335 | <<locked>> | 94% | 53,983 psi | 90% | 2402 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 51,097 psi | 85% | 2438 fps | 98.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 50,734 psi | 84% | 2457 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,361 psi | 60% | 2310 fps | 97.9% |
| Vihtavuori N120 | <<locked>> | 82% | 53,925 psi | 90% | 2303 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 52,185 psi | 87% | 2343 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 51,851 psi | 86% | 2356 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 51,561 psi | 86% | 2418 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 53,301 psi | 89% | 2434 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,081 psi | 82% | 2405 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 43,149 psi | 72% | 2356 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 92% | 53,809 psi | 89% | 2454 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 96% | 51,314 psi | 85% | 2431 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 42,163 psi | 70% | 2365 fps | 95.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,773 psi | 74% | 2352 fps | 98.4% |
| Winchester 748 | <<locked>> | 92% | 52,765 psi | 88% | 2500 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 51,721 psi | 86% | 2477 fps | 99.4% |
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% | 38,072 psi | 63% | 2182 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 48,863 psi | 81% | 2405 fps | 98.1% |
| Accurate 2230 | <<locked>> | 80% | 49,139 psi | 82% | 2411 fps | 98.4% |
| Accurate 2460 | <<locked>> | 80% | 41,060 psi | 68% | 2264 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 30,385 psi | 50% | 2096 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 36,201 psi | 60% | 2215 fps | 98.9% |
| Accurate 4064 | <<locked>> | 80% | 28,761 psi | 48% | 2077 fps | 98% |
| Accurate LT-30 | <<locked>> | 80% | 46,485 psi | 77% | 2251 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,862 psi | 78% | 2267 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 34,911 psi | 58% | 2178 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 50,850 psi | 84% | 2313 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 38,058 psi | 63% | 2224 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 45,687 psi | 76% | 2346 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,840 psi | 61% | 2192 fps | 97.5% |
| Alliant AR-Comp | <<locked>> | 80% | 35,331 psi | 59% | 2201 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,235 psi | 70% | 2356 fps | 98.2% |
| Alliant Power Pro 2000-MR | 39.1 gr | 86% | 38,043 psi | 63% | 2316 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 30,429 psi | 51% | 2106 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,439 psi | 72% | 2270 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 35,143 psi | 58% | 2205 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 98% | 39,059 psi | 65% | 2320 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,156 psi | 57% | 2247 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,237 psi | 75% | 2254 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 38,334 psi | 64% | 2264 fps | 95.3% |
| Bofors RP3 | <<locked>> | 84% | 31,531 psi | 52% | 2149 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,160 psi | 65% | 2195 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,447 psi | 57% | 2201 fps | 97.5% |
| Hodgdon CFE223 | 37.3 gr | 80% | 38,043 psi | 63% | 2306 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 80% | 41,974 psi | 70% | 2290 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 42,221 psi | 70% | 2306 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 40,074 psi | 67% | 2290 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 51,184 psi | 85% | 2329 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 35,099 psi | 58% | 2188 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 33,373 psi | 55% | 2178 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,227 psi | 52% | 2149 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,324 psi | 42% | 1293 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,924 psi | 56% | 2149 fps | 95.8% |
| IMR 3031 | <<locked>> | 80% | 33,562 psi | 56% | 2195 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 35,201 psi | 58% | 2162 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 44,411 psi | 74% | 2241 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 33,591 psi | 56% | 2182 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 36,840 psi | 61% | 2192 fps | 97.5% |
| Lovex D073.4 | <<locked>> | 80% | 49,734 psi | 83% | 2398 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 40,828 psi | 68% | 2264 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 80% | 32,692 psi | 54% | 2156 fps | 98.1% |
| Lovex S060 | <<locked>> | 80% | 36,114 psi | 60% | 2136 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 30,850 psi | 51% | 2083 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 48,689 psi | 81% | 2320 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,098 psi | 57% | 2139 fps | 96.8% |
| Norma 202 | <<locked>> | 80% | 34,011 psi | 57% | 2156 fps | 98.9% |
| Norma 203B | <<locked>> | 84% | 34,476 psi | 57% | 2195 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 86% | 36,260 psi | 60% | 2247 fps | 95.6% |
| Ramshot TAC | <<locked>> | 86% | 44,483 psi | 74% | 2323 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,433 psi | 59% | 2198 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,987 psi | 66% | 2231 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,411 psi | 42% | 1322 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,495 psi | 69% | 2274 fps | 99.4% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 49,763 psi | 83% | 2415 fps | 95.5% |
| ReloadSwiss RS 52 | 37.1 gr | 84% | 36,260 psi | 60% | 2283 fps | 95.3% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 28,427 psi | 47% | 2113 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 37,913 psi | 63% | 2192 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 32,677 psi | 54% | 2103 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 86% | 31,691 psi | 53% | 2146 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 49,734 psi | 83% | 2398 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,692 psi | 54% | 2156 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 30,850 psi | 51% | 2083 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,642 psi | 73% | 2280 fps | 98.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,198 psi | 85% | 2093 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,992 psi | 76% | 2356 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 35,360 psi | 59% | 2231 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,830 psi | 73% | 2277 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 42,134 psi | 70% | 2297 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 35,708 psi | 59% | 2195 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,955 psi | 60% | 2119 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,298 psi | 49% | 2001 fps | 98.5% |
| Somchem S321 | <<locked>> | 80% | 39,175 psi | 65% | 2257 fps | 98.3% |
| Somchem S335 | <<locked>> | 80% | 35,346 psi | 59% | 2123 fps | 99.5% |
| Somchem S341 | <<locked>> | 80% | 34,200 psi | 57% | 2159 fps | 95.1% |
| Somchem S355 | <<locked>> | 86% | 33,025 psi | 55% | 2156 fps | 95.5% |
| Somchem S365 | <<locked>> | 94% | 30,400 psi | 51% | 2172 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 50,807 psi | 84% | 2267 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,886 psi | 68% | 2188 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,940 psi | 60% | 2123 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,082 psi | 52% | 2100 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 32,169 psi | 53% | 2103 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 84% | 29,327 psi | 49% | 2057 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 98% | 40,698 psi | 68% | 2313 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 36,695 psi | 61% | 2188 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 80% | 30,792 psi | 51% | 2090 fps | 97.9% |
| Vihtavuori N550 | <<locked>> | 98% | 39,494 psi | 66% | 2316 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 34,519 psi | 57% | 2165 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 35,317 psi | 59% | 2221 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,314 psi | 54% | 2146 fps | 95.3% |
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 116 powders for .308 Win. loaded with the .308 | 190gr | Hornady Sub-X. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,582 fps; across all powders the maximum-charge window runs from 1,450 fps to 2,582 fps. Accurate 4064 gives the best case fill at 100 %, and 116 of the 116 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, Accurate 4350, Alliant Reloder- TS 15.5 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, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for .308 Win. with the .308 | 190gr | Hornady Sub-X they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Bofors RP7 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.