Load Specifications
Bullet:.308 | 190gr | Hornady BTSP
Bullet Manufacturer:Hornady
Bullet Weight:190 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.014"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:59 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:60,191 psi
Recommended Twist Rate:1:12.0
Load data in caliber .308 Win. Ackley Improved with .308 | 190gr | Hornady BTSP bullet and 94 powders. The key underlying parameters are shown in the table above.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 53,229 psi | 88% | 2411 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,809 psi | 89% | 2497 fps | 99% |
| Accurate 2230 | <<locked>> | 82% | 54,389 psi | 90% | 2503 fps | 99.2% |
| Accurate 2460 | <<locked>> | 86% | 51,706 psi | 86% | 2434 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 53,287 psi | 89% | 2467 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 52,750 psi | 88% | 2487 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 53,040 psi | 88% | 2503 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 41,727 psi | 69% | 2405 fps | 96.6% |
| Accurate LT-30 | <<locked>> | 84% | 53,679 psi | 89% | 2365 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,099 psi | 90% | 2385 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 52,040 psi | 86% | 2487 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 98% | 52,968 psi | 88% | 2484 fps | 98.9% |
| ADI AR 2219 | <<locked>> | 84% | 53,780 psi | 89% | 2474 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 51,866 psi | 86% | 2454 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 92% | 54,201 psi | 90% | 2477 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,011 psi | 88% | 2543 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 51,213 psi | 85% | 2579 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 51,924 psi | 86% | 2503 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 86% | 53,650 psi | 89% | 2421 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 52,852 psi | 88% | 2520 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 42,685 psi | 71% | 2411 fps | 96.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,791 psi | 81% | 2546 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 52,533 psi | 87% | 2365 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 51,488 psi | 86% | 2500 fps | 98.5% |
| Bofors RP3 | <<locked>> | 98% | 52,156 psi | 87% | 2516 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 90% | 54,302 psi | 90% | 2444 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 53,461 psi | 89% | 2526 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 51,663 psi | 86% | 2559 fps | 99% |
| Hodgdon H322 | <<locked>> | 86% | 52,591 psi | 87% | 2457 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 53,403 psi | 89% | 2480 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 53,722 psi | 89% | 2520 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 92% | 52,431 psi | 87% | 2497 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,812 psi | 64% | 2310 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,230 psi | 90% | 2572 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,432 psi | 57% | 1470 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,128 psi | 90% | 2503 fps | 99.7% |
| IMR 3031 | <<locked>> | 92% | 51,634 psi | 86% | 2490 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 52,707 psi | 88% | 2470 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 94% | 53,577 psi | 89% | 2448 fps | 95.9% |
| IMR 4198 | <<locked>> | 86% | 54,172 psi | 90% | 2385 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,292 psi | 67% | 2359 fps | 96.2% |
| IMR 4895 | <<locked>> | 96% | 54,143 psi | 90% | 2549 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 90% | 51,866 psi | 86% | 2454 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 86% | 51,764 psi | 86% | 2444 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 54,317 psi | 90% | 2516 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 52,721 psi | 88% | 2428 fps | 99.3% |
| Lovex S062 | <<locked>> | 96% | 51,996 psi | 86% | 2470 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 47,674 psi | 79% | 2408 fps | 96.3% |
| Norma 200 | <<locked>> | 82% | 53,258 psi | 88% | 2395 fps | 100% |
| Norma 201 | <<locked>> | 94% | 54,172 psi | 90% | 2487 fps | 99.9% |
| Norma 202 | <<locked>> | 92% | 51,300 psi | 85% | 2454 fps | 100% |
| Norma 203B | <<locked>> | 96% | 51,982 psi | 86% | 2510 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 42,438 psi | 71% | 2405 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 96% | 52,301 psi | 87% | 2533 fps | 99.3% |
| Ramshot TAC | <<locked>> | 90% | 52,315 psi | 87% | 2464 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 92% | 54,375 psi | 90% | 2526 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,127 psi | 88% | 2457 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,722 psi | 58% | 1506 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 51,430 psi | 85% | 2441 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 51,227 psi | 85% | 2457 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 52,460 psi | 87% | 2579 fps | 99.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,127 psi | 87% | 2605 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 41,901 psi | 70% | 2421 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 90% | 52,373 psi | 87% | 2434 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 51,227 psi | 85% | 2438 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 51,576 psi | 86% | 2500 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 47,674 psi | 79% | 2408 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 94% | 54,317 psi | 90% | 2516 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 51,996 psi | 86% | 2470 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 51,372 psi | 85% | 2411 fps | 99.6% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,375 psi | 90% | 2487 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,577 psi | 89% | 2559 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 54,288 psi | 90% | 2434 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 53,432 psi | 89% | 2487 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 53,911 psi | 90% | 2510 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 53,345 psi | 89% | 2398 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 52,547 psi | 87% | 2392 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 52,562 psi | 87% | 2484 fps | 99.9% |
| Somchem S335 | <<locked>> | 92% | 52,475 psi | 87% | 2402 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 52,736 psi | 88% | 2480 fps | 99.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 52,417 psi | 87% | 2500 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,623 psi | 63% | 2352 fps | 98.5% |
| Vihtavuori N130 | <<locked>> | 88% | 53,592 psi | 89% | 2375 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,156 psi | 88% | 2388 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 53,287 psi | 89% | 2454 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 51,779 psi | 86% | 2434 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,734 psi | 84% | 2444 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,904 psi | 75% | 2405 fps | 96.9% |
| Vihtavuori N530 | <<locked>> | 90% | 52,228 psi | 87% | 2454 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 96% | 52,924 psi | 88% | 2470 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 43,540 psi | 72% | 2408 fps | 96.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,977 psi | 76% | 2395 fps | 98.8% |
| Winchester 748 | <<locked>> | 92% | 54,302 psi | 90% | 2536 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,388 psi | 89% | 2520 fps | 99.7% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 39,218 psi | 65% | 2215 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,386 psi | 84% | 2444 fps | 98.5% |
| Accurate 2230 | <<locked>> | 80% | 50,908 psi | 85% | 2457 fps | 98.9% |
| Accurate 2460 | <<locked>> | 80% | 42,337 psi | 70% | 2300 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 31,749 psi | 53% | 2136 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 37,739 psi | 63% | 2260 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 30,037 psi | 50% | 2119 fps | 98.5% |
| Accurate 4350 | <<locked>> | 98% | 38,885 psi | 65% | 2352 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 47,601 psi | 79% | 2287 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,921 psi | 80% | 2303 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 35,839 psi | 60% | 2215 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 36,999 psi | 61% | 2221 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 47,137 psi | 78% | 2385 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,782 psi | 63% | 2228 fps | 98% |
| Alliant AR-Comp | <<locked>> | 80% | 36,535 psi | 61% | 2238 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,482 psi | 72% | 2395 fps | 98.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 39,479 psi | 66% | 2369 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,544 psi | 49% | 2103 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,425 psi | 74% | 2300 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 36,318 psi | 60% | 2244 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 37,913 psi | 63% | 2316 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 88% | 33,243 psi | 55% | 2247 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,267 psi | 77% | 2283 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 37,173 psi | 62% | 2257 fps | 95.2% |
| Bofors RP3 | <<locked>> | 82% | 30,574 psi | 51% | 2142 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,089 psi | 67% | 2231 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,810 psi | 59% | 2244 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,131 psi | 65% | 2349 fps | 96.5% |
| Hodgdon H322 | <<locked>> | 80% | 43,105 psi | 72% | 2326 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 43,772 psi | 73% | 2346 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 41,394 psi | 69% | 2333 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 36,056 psi | 60% | 2224 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 32,532 psi | 54% | 2178 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,198 psi | 53% | 2188 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,498 psi | 42% | 1309 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,853 psi | 58% | 2185 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 34,983 psi | 58% | 2238 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,301 psi | 57% | 2162 fps | 95% |
| IMR 4166 Enduron | <<locked>> | 92% | 50,328 psi | 84% | 2402 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 45,426 psi | 75% | 2274 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 37,768 psi | 63% | 2313 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 32,561 psi | 54% | 2178 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 37,782 psi | 63% | 2228 fps | 98% |
| Lovex D073.5 | <<locked>> | 80% | 42,076 psi | 70% | 2303 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 33,939 psi | 56% | 2198 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 37,028 psi | 62% | 2172 fps | 96.5% |
| Lovex S062 | <<locked>> | 80% | 31,778 psi | 53% | 2123 fps | 96.4% |
| Lovex S065 | <<locked>> | 98% | 45,078 psi | 75% | 2365 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 50,314 psi | 84% | 2356 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,360 psi | 59% | 2182 fps | 97.4% |
| Norma 202 | <<locked>> | 80% | 35,302 psi | 59% | 2198 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 33,417 psi | 56% | 2188 fps | 95.4% |
| Norma URP | <<locked>> | 96% | 37,579 psi | 62% | 2313 fps | 95% |
| Ramshot Big Game | <<locked>> | 84% | 35,143 psi | 58% | 2241 fps | 95.6% |
| Ramshot TAC | <<locked>> | 84% | 43,004 psi | 71% | 2320 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,782 psi | 61% | 2244 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,046 psi | 68% | 2270 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,585 psi | 43% | 1339 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,438 psi | 71% | 2306 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 48,124 psi | 80% | 2411 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 34,998 psi | 58% | 2277 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 27,499 psi | 46% | 2103 fps | 95.1% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 39,305 psi | 65% | 2372 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 39,030 psi | 65% | 2231 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 33,634 psi | 56% | 2139 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 84% | 30,705 psi | 51% | 2139 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 45,078 psi | 75% | 2365 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,939 psi | 56% | 2198 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 31,778 psi | 53% | 2123 fps | 96.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,165 psi | 75% | 2323 fps | 99% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,601 psi | 79% | 2395 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 34,272 psi | 57% | 2228 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,150 psi | 75% | 2313 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 40,712 psi | 68% | 2290 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,534 psi | 57% | 2188 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,999 psi | 61% | 2156 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,211 psi | 50% | 2037 fps | 98.9% |
| Somchem S321 | <<locked>> | 80% | 40,292 psi | 67% | 2297 fps | 98.7% |
| Somchem S335 | <<locked>> | 80% | 36,550 psi | 61% | 2162 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 35,230 psi | 59% | 2195 fps | 95.8% |
| Somchem S355 | <<locked>> | 84% | 32,010 psi | 53% | 2149 fps | 95.4% |
| Somchem S365 | <<locked>> | 92% | 29,428 psi | 49% | 2165 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 42,018 psi | 70% | 2221 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,043 psi | 62% | 2159 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,227 psi | 54% | 2136 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,344 psi | 55% | 2142 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 28,413 psi | 47% | 2051 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 96% | 39,450 psi | 66% | 2310 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 37,637 psi | 63% | 2224 fps | 98% |
| Vihtavuori N540 | <<locked>> | 80% | 31,894 psi | 53% | 2129 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 96% | 38,319 psi | 64% | 2313 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,460 psi | 56% | 2162 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 36,463 psi | 61% | 2260 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,605 psi | 56% | 2188 fps | 96.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 94 powders for .308 Win. Ackley Improved loaded with the .308 | 190gr | Hornady BTSP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,605 fps; across all powders the maximum-charge window runs from 1,470 fps to 2,605 fps. Accurate 4350 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 (415 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.