Load Specifications
Load data in caliber .375 Hoelderlin with .375 | 305gr | Hammer Claw Hammer 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 60 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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 47,166 psi | 86% | 2241 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 48,196 psi | 87% | 2297 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 47,239 psi | 86% | 2297 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 47,718 psi | 87% | 2339 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 47,718 psi | 87% | 2339 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 47,253 psi | 86% | 2333 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 45,310 psi | 82% | 2379 fps | 98.5% |
| ADI AR 2206H | <<locked>> | 88% | 49,153 psi | 89% | 2359 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 92% | 46,978 psi | 85% | 2313 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 86% | 48,559 psi | 88% | 2323 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 48,066 psi | 87% | 2306 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 49,734 psi | 90% | 2405 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 48,008 psi | 87% | 2448 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 49,139 psi | 89% | 2375 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 46,949 psi | 85% | 2349 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 45,440 psi | 82% | 2385 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 98% | 48,936 psi | 89% | 2467 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,053 psi | 58% | 2159 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 48,283 psi | 88% | 2369 fps | 98.9% |
| Bofors RP3 | <<locked>> | 94% | 48,936 psi | 89% | 2385 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 84% | 47,877 psi | 87% | 2270 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 46,775 psi | 85% | 2346 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 48,240 psi | 88% | 2421 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 84% | 48,399 psi | 88% | 2310 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 47,239 psi | 86% | 2346 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 96% | 47,413 psi | 86% | 2402 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 88% | 49,530 psi | 90% | 2369 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,611 psi | 76% | 2287 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 47,587 psi | 86% | 2392 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,824 psi | 63% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 49,574 psi | 90% | 2356 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 47,253 psi | 86% | 2339 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 48,733 psi | 88% | 2329 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 94% | 48,892 psi | 89% | 2303 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 96% | 49,211 psi | 89% | 2339 fps | 96.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 38,725 psi | 70% | 2254 fps | 97.1% |
| IMR 4895 | <<locked>> | 90% | 48,080 psi | 87% | 2375 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 86% | 48,559 psi | 88% | 2323 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 47,950 psi | 87% | 2306 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 47,718 psi | 87% | 2339 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 49,487 psi | 90% | 2300 fps | 99.6% |
| Lovex S062 | <<locked>> | 92% | 48,834 psi | 89% | 2339 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 47,993 psi | 87% | 2333 fps | 97.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 48,138 psi | 87% | 2356 fps | 96.5% |
| Norma 201 | <<locked>> | 88% | 47,950 psi | 87% | 2313 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 48,124 psi | 87% | 2320 fps | 100% |
| Norma 203B | <<locked>> | 92% | 49,124 psi | 89% | 2382 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 45,484 psi | 83% | 2375 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 92% | 48,863 psi | 89% | 2402 fps | 99.5% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 44,817 psi | 81% | 2365 fps | 96.4% |
| Ramshot TAC | <<locked>> | 86% | 48,588 psi | 88% | 2329 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 47,718 psi | 87% | 2349 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 84% | 49,342 psi | 90% | 2320 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,099 psi | 64% | 1450 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 48,080 psi | 87% | 2306 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 47,935 psi | 87% | 2333 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 49,356 psi | 90% | 2444 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 49,095 psi | 89% | 2477 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 45,136 psi | 82% | 2398 fps | 98.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,325 psi | 84% | 2415 fps | 97.7% |
| Rottweil R 901 | <<locked>> | 86% | 49,371 psi | 90% | 2303 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 48,457 psi | 88% | 2313 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 48,820 psi | 89% | 2375 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 98% | 47,993 psi | 87% | 2333 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 47,718 psi | 87% | 2339 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 48,834 psi | 89% | 2339 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 48,138 psi | 87% | 2356 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 47,253 psi | 86% | 2385 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 49,748 psi | 90% | 2352 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 47,369 psi | 86% | 2333 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 47,253 psi | 86% | 2231 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 49,400 psi | 90% | 2267 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 47,906 psi | 87% | 2290 fps | 96.1% |
| Somchem S321 | <<locked>> | 84% | 49,124 psi | 89% | 2349 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 49,110 psi | 89% | 2267 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 49,327 psi | 90% | 2349 fps | 99.5% |
| Somchem S355 | <<locked>> | 96% | 49,676 psi | 90% | 2375 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,567 psi | 74% | 2336 fps | 99.7% |
| Unknown powder | <<locked>> | 98% | 46,891 psi | 85% | 2382 fps | 98% |
| Vihtavuori N130 | <<locked>> | 82% | 47,210 psi | 86% | 2205 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 47,282 psi | 86% | 2221 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 47,398 psi | 86% | 2287 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 48,515 psi | 88% | 2300 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 47,863 psi | 87% | 2320 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,950 psi | 87% | 2372 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 86% | 48,762 psi | 88% | 2320 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 49,777 psi | 90% | 2339 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,876 psi | 85% | 2379 fps | 98.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 33,852 psi | 61% | 2224 fps | 96.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,008 psi | 89% | 2362 fps | 99.8% |
| Winchester 748 | <<locked>> | 84% | 48,240 psi | 88% | 2365 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 47,413 psi | 86% | 2402 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 82% | 48,022 psi | 87% | 2359 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 41,611 psi | 76% | 2165 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,208 psi | 82% | 2257 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,243 psi | 62% | 2103 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,885 psi | 71% | 2208 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 38,885 psi | 71% | 2208 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 32,387 psi | 59% | 2093 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 32,227 psi | 58% | 2149 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 38,247 psi | 69% | 2185 fps | 98% |
| ADI AR 2208 | <<locked>> | 80% | 32,663 psi | 59% | 2060 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,277 psi | 73% | 2195 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 39,305 psi | 71% | 2188 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,572 psi | 85% | 2359 fps | 99.7% |
| Alliant Power Pro 2000-MR | 55.1 gr | 80% | 34,461 psi | 63% | 2195 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,720 psi | 58% | 2080 fps | 97.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,200 psi | 62% | 2126 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 90% | 33,707 psi | 61% | 2159 fps | 95.1% |
| Alliant Reloder-17 | 55.6 gr | 82% | 29,269 psi | 53% | 2083 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 30,313 psi | 55% | 2116 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,985 psi | 67% | 2182 fps | 96.6% |
| Bofors RP3 | <<locked>> | 80% | 30,966 psi | 56% | 2077 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,322 psi | 77% | 2188 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,305 psi | 70% | 2211 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,032 psi | 76% | 2323 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 80% | 42,641 psi | 77% | 2231 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 36,579 psi | 66% | 2169 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 94% | 44,280 psi | 80% | 2349 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 38,522 psi | 70% | 2195 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 28,892 psi | 52% | 2031 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,445 psi | 59% | 2123 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,788 psi | 47% | 1260 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,403 psi | 62% | 2103 fps | 97.5% |
| IMR 3031 | <<locked>> | 80% | 34,316 psi | 62% | 2139 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 31,923 psi | 58% | 2037 fps | 95.6% |
| IMR 4166 Enduron | <<locked>> | 92% | 46,021 psi | 84% | 2260 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 46,267 psi | 84% | 2293 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 32,285 psi | 59% | 2129 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 34,954 psi | 63% | 2152 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 80% | 40,277 psi | 73% | 2195 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 45,020 psi | 82% | 2264 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 36,608 psi | 66% | 2169 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 39,044 psi | 71% | 2136 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 33,881 psi | 61% | 2093 fps | 98.2% |
| Lovex S065 | <<locked>> | 90% | 37,681 psi | 68% | 2162 fps | 95% |
| Lovex S070 | <<locked>> | 96% | 42,699 psi | 77% | 2270 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 37,594 psi | 68% | 2149 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 37,623 psi | 68% | 2159 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 33,576 psi | 61% | 2119 fps | 96.8% |
| Norma URP | <<locked>> | 90% | 33,301 psi | 60% | 2152 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 33,040 psi | 60% | 2126 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 96% | 39,726 psi | 72% | 2277 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 39,987 psi | 73% | 2192 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,059 psi | 71% | 2211 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,540 psi | 79% | 2234 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 47% | 1296 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,107 psi | 82% | 2264 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 42,366 psi | 77% | 2244 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,201 psi | 64% | 2205 fps | 96.7% |
| ReloadSwiss RS 60 | 54.2 gr | 80% | 29,167 psi | 53% | 2090 fps | 97.8% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 34,664 psi | 63% | 2208 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 38,072 psi | 69% | 2267 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 41,307 psi | 75% | 2185 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 35,694 psi | 65% | 2106 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 29,037 psi | 53% | 2028 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 90% | 37,681 psi | 68% | 2162 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,608 psi | 66% | 2169 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 33,881 psi | 61% | 2093 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 96% | 42,699 psi | 77% | 2270 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,342 psi | 55% | 2070 fps | 95.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,101 psi | 69% | 2169 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,767 psi | 67% | 2159 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,276 psi | 71% | 2113 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,227 psi | 58% | 2005 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 44,831 psi | 81% | 2247 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 42,975 psi | 78% | 2260 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 38,725 psi | 70% | 2119 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,623 psi | 68% | 2165 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 30,298 psi | 55% | 2037 fps | 96.2% |
| Somchem S365 | <<locked>> | 86% | 26,339 psi | 48% | 2021 fps | 95.6% |
| Unknown powder | <<locked>> | 90% | 36,593 psi | 66% | 2205 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 44,498 psi | 81% | 2169 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,378 psi | 71% | 2113 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,664 psi | 63% | 2100 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,433 psi | 64% | 2103 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 28,587 psi | 52% | 1985 fps | 97% |
| Vihtavuori N160 | <<locked>> | 90% | 35,056 psi | 64% | 2156 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 40,205 psi | 73% | 2192 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 34,026 psi | 62% | 2096 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 34,055 psi | 62% | 2156 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 98% | 31,749 psi | 58% | 2178 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 29,327 psi | 53% | 2008 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 42,018 psi | 76% | 2274 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 44,280 psi | 80% | 2349 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,614 psi | 81% | 2310 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 105 powders for .375 Hoelderlin loaded with the .375 | 305gr | Hammer Claw Hammer . ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,477 fps; across all powders the maximum-charge window runs from 1,417 fps to 2,477 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 305.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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 60, Alliant Reloder-17 rank at the top here: for .375 Hoelderlin with the .375 | 305gr | Hammer Claw Hammer they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-19, Alliant Reloder-26 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.