Load Specifications
Load data in caliber .308 Win. Ackley Improved with .311 | 180gr | Prvi Partizan SP BT 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 LEVERevolution.
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% | 54,288 psi | 90% | 2516 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,360 psi | 90% | 2598 fps | 98.9% |
| Accurate 2460 | <<locked>> | 86% | 52,765 psi | 88% | 2543 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 50,836 psi | 84% | 2530 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,824 psi | 89% | 2592 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 53,998 psi | 90% | 2608 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,627 psi | 71% | 2507 fps | 96.6% |
| Accurate LT-30 | <<locked>> | 84% | 54,375 psi | 90% | 2467 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 51,590 psi | 86% | 2448 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 53,229 psi | 88% | 2598 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 98% | 53,853 psi | 89% | 2589 fps | 98.9% |
| ADI AR 2219 | <<locked>> | 82% | 51,140 psi | 85% | 2533 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 52,489 psi | 87% | 2556 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 90% | 51,706 psi | 86% | 2543 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,766 psi | 89% | 2651 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 52,344 psi | 87% | 2690 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 52,765 psi | 88% | 2608 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 86% | 54,404 psi | 90% | 2526 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,737 psi | 89% | 2628 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,497 psi | 72% | 2516 fps | 96.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,893 psi | 83% | 2657 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 53,403 psi | 89% | 2470 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 52,750 psi | 88% | 2612 fps | 98.6% |
| Bofors RP3 | <<locked>> | 98% | 53,171 psi | 88% | 2625 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 51,547 psi | 86% | 2500 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 51,024 psi | 85% | 2585 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 88% | 52,562 psi | 87% | 2667 fps | 99% |
| Hodgdon H322 | <<locked>> | 86% | 53,258 psi | 88% | 2562 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 54,259 psi | 90% | 2585 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 51,343 psi | 85% | 2582 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 92% | 53,664 psi | 89% | 2608 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,682 psi | 66% | 2411 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 51,895 psi | 86% | 2635 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,316 psi | 57% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 51,605 psi | 86% | 2562 fps | 99.4% |
| IMR 3031 | <<locked>> | 92% | 52,475 psi | 87% | 2598 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 53,388 psi | 89% | 2575 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 94% | 54,404 psi | 90% | 2552 fps | 95.9% |
| IMR 4198 | <<locked>> | 84% | 51,663 psi | 86% | 2448 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,133 psi | 68% | 2461 fps | 96.2% |
| IMR 4895 | <<locked>> | 94% | 51,851 psi | 86% | 2612 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 90% | 52,489 psi | 87% | 2556 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 86% | 52,562 psi | 87% | 2549 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 51,909 psi | 86% | 2579 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 53,679 psi | 89% | 2536 fps | 99.3% |
| Lovex S062 | <<locked>> | 96% | 52,678 psi | 88% | 2572 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 48,646 psi | 81% | 2513 fps | 96.3% |
| Norma 200 | <<locked>> | 82% | 54,114 psi | 90% | 2500 fps | 100% |
| Norma 201 | <<locked>> | 92% | 51,808 psi | 86% | 2549 fps | 99.8% |
| Norma 202 | <<locked>> | 92% | 52,301 psi | 87% | 2559 fps | 100% |
| Norma 203B | <<locked>> | 96% | 52,823 psi | 88% | 2615 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 43,265 psi | 72% | 2507 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 96% | 53,316 psi | 89% | 2641 fps | 99.3% |
| Ramshot TAC | <<locked>> | 90% | 52,997 psi | 88% | 2566 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 90% | 51,909 psi | 86% | 2585 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 88% | 54,056 psi | 90% | 2562 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,867 psi | 58% | 1575 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 52,257 psi | 87% | 2546 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 52,388 psi | 87% | 2566 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 53,316 psi | 89% | 2687 fps | 99.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 53,301 psi | 89% | 2720 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 42,859 psi | 71% | 2526 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 90% | 53,098 psi | 88% | 2539 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 52,156 psi | 87% | 2543 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,707 psi | 88% | 2608 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 48,646 psi | 81% | 2513 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 92% | 51,909 psi | 86% | 2579 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 52,678 psi | 88% | 2572 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 52,388 psi | 87% | 2520 fps | 99.6% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 51,532 psi | 86% | 2543 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 51,387 psi | 85% | 2621 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 52,127 psi | 87% | 2503 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,404 psi | 90% | 2592 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 51,532 psi | 86% | 2572 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,244 psi | 90% | 2503 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 53,679 psi | 89% | 2500 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 53,548 psi | 89% | 2592 fps | 99.9% |
| Somchem S335 | <<locked>> | 92% | 53,113 psi | 88% | 2503 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 53,983 psi | 90% | 2592 fps | 99.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,519 psi | 89% | 2612 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,595 psi | 64% | 2461 fps | 98.5% |
| Vihtavuori N130 | <<locked>> | 88% | 54,114 psi | 90% | 2477 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 54,056 psi | 90% | 2490 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 54,360 psi | 90% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 52,518 psi | 87% | 2536 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,692 psi | 86% | 2549 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,643 psi | 76% | 2507 fps | 96.9% |
| Vihtavuori N530 | <<locked>> | 90% | 53,113 psi | 88% | 2559 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 96% | 53,983 psi | 90% | 2579 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,483 psi | 74% | 2510 fps | 96.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,036 psi | 78% | 2500 fps | 98.9% |
| Winchester 748 | <<locked>> | 90% | 51,909 psi | 86% | 2602 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 54,375 psi | 90% | 2625 fps | 99.7% |
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% | 39,900 psi | 66% | 2313 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 51,082 psi | 85% | 2552 fps | 98.5% |
| Accurate 2460 | <<locked>> | 80% | 43,134 psi | 72% | 2402 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 32,285 psi | 54% | 2228 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,421 psi | 64% | 2356 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 30,574 psi | 51% | 2208 fps | 98.5% |
| Accurate 4350 | <<locked>> | 98% | 39,856 psi | 66% | 2457 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 48,196 psi | 80% | 2385 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,573 psi | 81% | 2402 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 36,477 psi | 61% | 2310 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 37,652 psi | 63% | 2316 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 47,703 psi | 79% | 2487 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,450 psi | 64% | 2326 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 80% | 37,202 psi | 62% | 2333 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,251 psi | 74% | 2500 fps | 98.7% |
| Alliant Power Pro 2000-MR | 43.1 gr | 86% | 40,132 psi | 67% | 2470 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 31,908 psi | 53% | 2234 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,252 psi | 75% | 2402 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 36,956 psi | 61% | 2339 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 38,711 psi | 64% | 2421 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 88% | 33,750 psi | 56% | 2339 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,079 psi | 78% | 2385 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 37,782 psi | 63% | 2356 fps | 95.2% |
| Bofors RP3 | <<locked>> | 82% | 31,270 psi | 52% | 2234 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,553 psi | 67% | 2323 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,434 psi | 61% | 2339 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,929 psi | 66% | 2451 fps | 96.6% |
| Hodgdon H322 | <<locked>> | 80% | 43,903 psi | 73% | 2428 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,440 psi | 74% | 2444 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 39,610 psi | 66% | 2385 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 36,738 psi | 61% | 2323 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,112 psi | 55% | 2274 fps | 95.1% |
| Hodgdon LEVERevolution | 39.3 gr | 80% | 32,793 psi | 54% | 2283 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,643 psi | 43% | 1371 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,462 psi | 59% | 2280 fps | 96.3% |
| IMR 3031 | <<locked>> | 80% | 35,346 psi | 59% | 2326 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 36,869 psi | 61% | 2297 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 51,343 psi | 85% | 2507 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 45,890 psi | 76% | 2369 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 38,624 psi | 64% | 2411 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 33,228 psi | 55% | 2270 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 38,450 psi | 64% | 2326 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 80% | 42,975 psi | 71% | 2405 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 34,722 psi | 58% | 2293 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 37,492 psi | 62% | 2264 fps | 96.4% |
| Lovex S062 | <<locked>> | 80% | 32,256 psi | 54% | 2211 fps | 96.3% |
| Lovex S065 | <<locked>> | 98% | 45,861 psi | 76% | 2467 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 50,995 psi | 85% | 2457 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,839 psi | 60% | 2274 fps | 97.4% |
| Norma 202 | <<locked>> | 80% | 35,795 psi | 59% | 2290 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 34,142 psi | 57% | 2283 fps | 95.4% |
| Norma URP | <<locked>> | 98% | 40,698 psi | 68% | 2457 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 84% | 35,911 psi | 60% | 2339 fps | 95.6% |
| Ramshot TAC | <<locked>> | 84% | 43,743 psi | 73% | 2418 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,318 psi | 62% | 2339 fps | 96.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,829 psi | 69% | 2369 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,701 psi | 43% | 1404 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,381 psi | 72% | 2411 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 49,081 psi | 82% | 2516 fps | 95.6% |
| ReloadSwiss RS 52 | 39.8 gr | 82% | 35,607 psi | 59% | 2372 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 27,934 psi | 46% | 2192 fps | 95% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 40,103 psi | 67% | 2474 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 39,465 psi | 66% | 2323 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 34,200 psi | 57% | 2231 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 84% | 31,430 psi | 52% | 2231 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 45,861 psi | 76% | 2467 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,722 psi | 58% | 2293 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 32,256 psi | 54% | 2211 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,759 psi | 76% | 2421 fps | 99% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 48,254 psi | 80% | 2497 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 35,085 psi | 58% | 2329 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,948 psi | 76% | 2418 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 41,568 psi | 69% | 2392 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,954 psi | 58% | 2280 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,666 psi | 63% | 2251 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,792 psi | 51% | 2126 fps | 98.9% |
| Somchem S321 | <<locked>> | 80% | 41,133 psi | 68% | 2398 fps | 98.7% |
| Somchem S335 | <<locked>> | 80% | 37,057 psi | 62% | 2254 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 35,969 psi | 60% | 2293 fps | 95.8% |
| Somchem S355 | <<locked>> | 84% | 32,489 psi | 54% | 2241 fps | 95.4% |
| Somchem S365 | <<locked>> | 92% | 29,994 psi | 50% | 2257 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 42,743 psi | 71% | 2320 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,710 psi | 63% | 2254 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,880 psi | 55% | 2231 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,765 psi | 56% | 2231 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 28,906 psi | 48% | 2139 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 96% | 40,132 psi | 67% | 2408 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 38,261 psi | 64% | 2320 fps | 98% |
| Vihtavuori N540 | <<locked>> | 80% | 32,372 psi | 54% | 2218 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 96% | 39,131 psi | 65% | 2411 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,881 psi | 56% | 2254 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 37,130 psi | 62% | 2356 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,200 psi | 57% | 2283 fps | 96.1% |
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 93 powders for .308 Win. Ackley Improved loaded with the .311 | 180gr | Prvi Partizan SP BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,720 fps; across all powders the maximum-charge window runs from 1,532 fps to 2,720 fps. Accurate 4350 gives the best case fill at 100 %, and 93 of the 93 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 180.0 gr projectile in 0.311" calls for a 1:15.0 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon LEVERevolution rank at the top here: for .308 Win. Ackley Improved with the .311 | 180gr | Prvi Partizan SP BT 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.