Load Specifications
Load data in caliber .375 Ruger with .376 | 236gr | Peregrine VLR-5 bullet and 94 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, Hodgdon CFE223 and ReloadSwiss RS 52.
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: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 90% | 54,215 psi | 87% | 2635 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,563 psi | 88% | 2720 fps | 98.6% |
| Accurate 2230 | <<locked>> | 82% | 55,680 psi | 90% | 2733 fps | 99% |
| Accurate 2460 | <<locked>> | 86% | 52,620 psi | 85% | 2651 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 54,491 psi | 88% | 2684 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 54,201 psi | 87% | 2703 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 54,215 psi | 87% | 2720 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 43,149 psi | 70% | 2605 fps | 96.1% |
| Accurate LT-30 | <<locked>> | 84% | 54,723 psi | 88% | 2592 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 55,143 psi | 89% | 2612 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 53,388 psi | 86% | 2710 fps | 99.1% |
| ADI AR 2207 | <<locked>> | 82% | 55,898 psi | 90% | 2608 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 54,520 psi | 88% | 2703 fps | 98.7% |
| ADI AR 2219 | <<locked>> | 84% | 54,998 psi | 89% | 2700 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 52,910 psi | 85% | 2671 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 92% | 55,738 psi | 90% | 2703 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 54,027 psi | 87% | 2772 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 52,924 psi | 85% | 2802 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 53,476 psi | 86% | 2723 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 86% | 54,128 psi | 87% | 2644 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 54,462 psi | 88% | 2743 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,772 psi | 71% | 2615 fps | 96.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 50,807 psi | 82% | 2769 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 53,737 psi | 87% | 2582 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 53,374 psi | 86% | 2720 fps | 98.3% |
| Bofors RP3 | <<locked>> | 98% | 53,664 psi | 86% | 2733 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 55,259 psi | 89% | 2664 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 92% | 55,129 psi | 89% | 2746 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 88% | 53,142 psi | 86% | 2779 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 86% | 53,592 psi | 86% | 2680 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 54,621 psi | 88% | 2700 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 55,550 psi | 89% | 2743 fps | 98% |
| Hodgdon H4895 | <<locked>> | 92% | 53,809 psi | 87% | 2720 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,842 psi | 64% | 2507 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 56,115 psi | 90% | 2795 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,127 psi | 55% | 1644 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 55,535 psi | 89% | 2726 fps | 99.5% |
| IMR 3031 | <<locked>> | 92% | 52,982 psi | 85% | 2717 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 53,867 psi | 87% | 2687 fps | 98.8% |
| IMR 4198 | <<locked>> | 86% | 54,940 psi | 89% | 2615 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 55,869 psi | 90% | 2776 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 90% | 52,910 psi | 85% | 2671 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 86% | 52,591 psi | 85% | 2657 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 94% | 55,840 psi | 90% | 2736 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 53,896 psi | 87% | 2648 fps | 99.1% |
| Lovex S062 | <<locked>> | 96% | 53,127 psi | 86% | 2687 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,037 psi | 79% | 2615 fps | 95.9% |
| Norma 200 | <<locked>> | 82% | 53,809 psi | 87% | 2618 fps | 100% |
| Norma 201 | <<locked>> | 94% | 55,434 psi | 89% | 2707 fps | 99.8% |
| Norma 202 | <<locked>> | 94% | 55,970 psi | 90% | 2717 fps | 100% |
| Norma 203B | <<locked>> | 96% | 53,563 psi | 86% | 2730 fps | 99.1% |
| Norma URPᴾ | <<locked>> | 100% | 43,714 psi | 70% | 2608 fps | 96% |
| Ramshot Big Game | <<locked>> | 96% | 54,215 psi | 87% | 2753 fps | 99.1% |
| Ramshot TAC | <<locked>> | 90% | 53,621 psi | 86% | 2677 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 92% | 56,144 psi | 90% | 2749 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 88% | 54,375 psi | 88% | 2674 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,330 psi | 55% | 1680 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 52,518 psi | 85% | 2661 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 52,779 psi | 85% | 2671 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 54,244 psi | 87% | 2802 fps | 98.9% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 54,389 psi | 88% | 2835 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 56,101 psi | 90% | 2697 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 55,811 psi | 90% | 2703 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 53,272 psi | 86% | 2720 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,037 psi | 79% | 2615 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 94% | 55,840 psi | 90% | 2736 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 53,127 psi | 86% | 2687 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 52,547 psi | 85% | 2631 fps | 99.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 55,085 psi | 89% | 2365 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 55,376 psi | 89% | 2707 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 55,637 psi | 90% | 2779 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 55,376 psi | 89% | 2667 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,926 psi | 88% | 2700 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 55,434 psi | 89% | 2730 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,462 psi | 88% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 53,954 psi | 87% | 2612 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 54,143 psi | 87% | 2707 fps | 99.8% |
| Somchem S335 | <<locked>> | 92% | 53,330 psi | 86% | 2615 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 54,592 psi | 88% | 2700 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 54,157 psi | 87% | 2723 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,725 psi | 62% | 2552 fps | 98.1% |
| Vihtavuori N120 | <<locked>> | 82% | 55,753 psi | 90% | 2559 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 54,230 psi | 87% | 2595 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 54,331 psi | 88% | 2608 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 54,708 psi | 88% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 53,055 psi | 85% | 2651 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 52,402 psi | 84% | 2661 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 46,195 psi | 74% | 2612 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 90% | 53,301 psi | 86% | 2671 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 96% | 54,795 psi | 88% | 2690 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 45,208 psi | 73% | 2612 fps | 96.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,703 psi | 77% | 2602 fps | 98.7% |
| Winchester 748 | <<locked>> | 92% | 56,173 psi | 90% | 2762 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 55,216 psi | 89% | 2740 fps | 99.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 39,378 psi | 63% | 2415 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 51,082 psi | 82% | 2667 fps | 98% |
| Accurate 2230 | <<locked>> | 80% | 51,663 psi | 83% | 2674 fps | 98.5% |
| Accurate 2460 | <<locked>> | 80% | 42,757 psi | 69% | 2503 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 31,386 psi | 51% | 2310 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 38,116 psi | 61% | 2451 fps | 98.8% |
| Accurate 4064 | <<locked>> | 80% | 29,733 psi | 48% | 2287 fps | 97.6% |
| Accurate 4350 | <<locked>> | 98% | 40,147 psi | 65% | 2549 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 48,225 psi | 78% | 2503 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,588 psi | 78% | 2520 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 36,274 psi | 58% | 2405 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 52,591 psi | 85% | 2569 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 39,885 psi | 64% | 2461 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 48,022 psi | 77% | 2605 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,348 psi | 62% | 2428 fps | 97.3% |
| Alliant AR-Comp | <<locked>> | 80% | 36,985 psi | 60% | 2438 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,237 psi | 71% | 2612 fps | 98.1% |
| Alliant Power Pro 2000-MR | 69.9 gr | 86% | 40,132 psi | 65% | 2569 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 33,924 psi | 55% | 2379 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,875 psi | 72% | 2513 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 39,218 psi | 63% | 2484 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 41,292 psi | 67% | 2569 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 90% | 36,172 psi | 58% | 2487 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,166 psi | 76% | 2493 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,466 psi | 65% | 2503 fps | 95.4% |
| Bofors RP3 | <<locked>> | 84% | 33,040 psi | 53% | 2369 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,393 psi | 65% | 2428 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,318 psi | 59% | 2431 fps | 97.4% |
| Hodgdon CFE223 | 66.6 gr | 80% | 39,987 psi | 64% | 2552 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 80% | 43,743 psi | 70% | 2536 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,396 psi | 72% | 2552 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 42,380 psi | 68% | 2533 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 36,535 psi | 59% | 2418 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 35,114 psi | 57% | 2411 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,590 psi | 53% | 2372 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,280 psi | 41% | 1470 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,302 psi | 57% | 2375 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 35,186 psi | 57% | 2428 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 39,218 psi | 63% | 2444 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 45,905 psi | 74% | 2490 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 35,230 psi | 57% | 2415 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 38,348 psi | 62% | 2428 fps | 97.3% |
| Lovex D073.5 | <<locked>> | 80% | 42,612 psi | 69% | 2503 fps | 99% |
| Lovex D073.6 | <<locked>> | 80% | 34,243 psi | 55% | 2382 fps | 97.9% |
| Lovex S060 | <<locked>> | 80% | 37,217 psi | 60% | 2362 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 31,792 psi | 51% | 2300 fps | 95.3% |
| Lovex S065 | <<locked>> | 98% | 46,035 psi | 74% | 2566 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 50,459 psi | 81% | 2572 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,317 psi | 57% | 2365 fps | 96.5% |
| Norma 202 | <<locked>> | 80% | 35,534 psi | 57% | 2388 fps | 98.8% |
| Norma 203B | <<locked>> | 84% | 36,056 psi | 58% | 2425 fps | 95.3% |
| Norma URP | <<locked>> | 98% | 40,988 psi | 66% | 2556 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 86% | 38,305 psi | 62% | 2484 fps | 95.7% |
| Ramshot TAC | <<locked>> | 86% | 46,920 psi | 76% | 2572 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,159 psi | 60% | 2431 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,698 psi | 67% | 2470 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,411 psi | 41% | 1506 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,192 psi | 70% | 2516 fps | 99.3% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 49,342 psi | 79% | 2621 fps | 95.1% |
| ReloadSwiss RS 52 | 66.2 gr | 84% | 38,116 psi | 61% | 2523 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 29,544 psi | 48% | 2326 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 38,856 psi | 63% | 2425 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 80% | 33,605 psi | 54% | 2320 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 86% | 33,098 psi | 53% | 2362 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 46,035 psi | 74% | 2566 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,243 psi | 55% | 2382 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 31,792 psi | 51% | 2300 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,818 psi | 74% | 2530 fps | 98.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,156 psi | 84% | 2333 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 48,269 psi | 78% | 2608 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 37,362 psi | 60% | 2470 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,629 psi | 74% | 2530 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 44,483 psi | 72% | 2543 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 37,246 psi | 60% | 2425 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,173 psi | 60% | 2346 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,313 psi | 49% | 2215 fps | 98.3% |
| Somchem S321 | <<locked>> | 80% | 40,973 psi | 66% | 2497 fps | 98.3% |
| Somchem S335 | <<locked>> | 80% | 36,579 psi | 59% | 2349 fps | 99.4% |
| Somchem S341 | <<locked>> | 80% | 35,795 psi | 58% | 2385 fps | 95% |
| Somchem S355 | <<locked>> | 86% | 34,389 psi | 55% | 2375 fps | 95.3% |
| Somchem S365 | <<locked>> | 94% | 31,937 psi | 51% | 2395 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 52,489 psi | 85% | 2520 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,308 psi | 68% | 2428 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,289 psi | 60% | 2356 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,329 psi | 52% | 2320 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 33,518 psi | 54% | 2326 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 84% | 30,618 psi | 49% | 2270 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 98% | 43,265 psi | 70% | 2562 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 38,072 psi | 61% | 2418 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 80% | 32,213 psi | 52% | 2306 fps | 97.8% |
| Vihtavuori N550 | <<locked>> | 98% | 42,192 psi | 68% | 2559 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,463 psi | 59% | 2395 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 36,956 psi | 60% | 2454 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,953 psi | 55% | 2372 fps | 95.2% |
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 .375 Ruger loaded with the .376 | 236gr | Peregrine VLR-5. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,835 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,835 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 (428 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 236.0 gr projectile in 0.376" calls for a 1:17.0 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, Hodgdon CFE223, ReloadSwiss RS 52 rank at the top here: for .375 Ruger with the .376 | 236gr | Peregrine VLR-5 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.