Load Specifications
Load data in caliber .375 R Verney-Carron with .375 | 260gr | Nosler AccuBond bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 88% | 51,561 psi | 87% | 2717 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,064 psi | 77% | 2733 fps | 98.2% |
| Accurate 4064 | <<locked>> | 86% | 52,185 psi | 88% | 2759 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 52,069 psi | 88% | 2851 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 51,982 psi | 87% | 2785 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,113 psi | 89% | 2789 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,563 psi | 90% | 2884 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 51,619 psi | 87% | 2904 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,287 psi | 90% | 2881 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,403 psi | 90% | 2812 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,693 psi | 90% | 2831 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,113 psi | 89% | 2907 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 50,691 psi | 85% | 2884 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,489 psi | 88% | 2871 fps | 97.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,238 psi | 78% | 2808 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,424 psi | 73% | 2756 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,276 psi | 64% | 2664 fps | 96.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,168 psi | 83% | 2936 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 51,648 psi | 87% | 2802 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 50,473 psi | 85% | 2776 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,238 psi | 78% | 2808 fps | 95.9% |
| Bofors RP7 | <<locked>> | 92% | 53,708 psi | 90% | 2802 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,679 psi | 90% | 2812 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 51,155 psi | 86% | 2789 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 90% | 52,431 psi | 88% | 2867 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 94% | 53,185 psi | 89% | 2831 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 52,504 psi | 88% | 2795 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 52,997 psi | 89% | 2828 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 52,315 psi | 88% | 2831 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 51,053 psi | 86% | 2877 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 61% | 1736 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 52,591 psi | 88% | 2782 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 51,576 psi | 87% | 2759 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 51,982 psi | 87% | 2762 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 51,285 psi | 86% | 2736 fps | 98.2% |
| IMR 4350 | <<locked>> | 94% | 50,995 psi | 86% | 2782 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,228 psi | 88% | 2779 fps | 98.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,330 psi | 90% | 2851 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 51,706 psi | 87% | 2808 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 51,837 psi | 87% | 2759 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 51,387 psi | 86% | 2713 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 52,605 psi | 88% | 2769 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 51,996 psi | 87% | 2779 fps | 99.2% |
| Lovex S070 | <<locked>> | 94% | 52,866 psi | 89% | 2815 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,261 psi | 64% | 2585 fps | 96.3% |
| Norma 201 | <<locked>> | 82% | 50,865 psi | 86% | 2733 fps | 100% |
| Norma 202 | <<locked>> | 82% | 51,314 psi | 86% | 2730 fps | 100% |
| Norma 203B | <<locked>> | 86% | 52,953 psi | 89% | 2818 fps | 100% |
| Norma 204 | <<locked>> | 94% | 51,227 psi | 86% | 2825 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 48,776 psi | 82% | 2890 fps | 97.9% |
| Norma URP | <<locked>> | 94% | 51,155 psi | 86% | 2838 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 53,476 psi | 90% | 2844 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 53,301 psi | 90% | 2887 fps | 99.2% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,150 psi | 76% | 2759 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,521 psi | 61% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 51,285 psi | 86% | 2769 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 50,807 psi | 85% | 2844 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 50,386 psi | 85% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 51,764 psi | 87% | 2871 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 50,763 psi | 85% | 2894 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 84% | 51,387 psi | 86% | 2733 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 50,488 psi | 85% | 2769 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,488 psi | 87% | 2854 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 92% | 53,708 psi | 90% | 2802 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 51,996 psi | 87% | 2779 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 51,837 psi | 87% | 2759 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 52,605 psi | 88% | 2769 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 52,866 psi | 89% | 2815 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,054 psi | 88% | 2831 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,808 psi | 89% | 2785 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,650 psi | 90% | 2808 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 51,909 psi | 87% | 2667 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 52,518 psi | 88% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 51,895 psi | 87% | 2730 fps | 98.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,010 psi | 86% | 2848 fps | 97% |
| Somchem S335 | <<locked>> | 82% | 51,605 psi | 87% | 2667 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 52,576 psi | 88% | 2776 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 50,836 psi | 85% | 2769 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 52,953 psi | 89% | 2890 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,301 psi | 88% | 2835 fps | 98% |
| Unknown powder | <<locked>> | 92% | 52,025 psi | 87% | 2844 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 82% | 52,344 psi | 88% | 2651 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 51,967 psi | 87% | 2707 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 51,808 psi | 87% | 2710 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 51,996 psi | 87% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,447 psi | 90% | 2831 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,962 psi | 76% | 2697 fps | 96% |
| Vihtavuori N540 | <<locked>> | 86% | 53,374 psi | 90% | 2756 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 52,446 psi | 88% | 2838 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,356 psi | 81% | 2835 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,142 psi | 89% | 2805 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,431 psi | 88% | 2867 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,030 psi | 66% | 2792 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,734 psi | 85% | 2795 fps | 96.6% |
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 2700 | <<locked>> | 82% | 42,438 psi | 71% | 2559 fps | 95.5% |
| Accurate 3100 | <<locked>> | 92% | 35,128 psi | 59% | 2516 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 43,207 psi | 73% | 2618 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,155 psi | 54% | 2461 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 80% | 48,820 psi | 82% | 2733 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,423 psi | 70% | 2585 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 47,079 psi | 79% | 2769 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,860 psi | 75% | 2785 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 44,034 psi | 74% | 2713 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,437 psi | 70% | 2612 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,454 psi | 75% | 2677 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,227 psi | 54% | 2474 fps | 96.2% |
| Alliant Reloder-17 | 80.3 gr | 80% | 35,940 psi | 60% | 2595 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,311 psi | 78% | 2762 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,221 psi | 73% | 2749 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,513 psi | 45% | 2336 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,984 psi | 61% | 2608 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,242 psi | 54% | 2559 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,196 psi | 81% | 2743 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 41,350 psi | 70% | 2618 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 43,221 psi | 73% | 2749 fps | 95% |
| Bofors RP7 | <<locked>> | 84% | 41,916 psi | 70% | 2592 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,285 psi | 85% | 2762 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,945 psi | 71% | 2621 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 82% | 39,885 psi | 67% | 2635 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 44,208 psi | 74% | 2674 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 49,327 psi | 83% | 2743 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,675 psi | 50% | 2372 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,873 psi | 72% | 2674 fps | 99.9% |
| Hodgdon Superformance | 91.3 gr | 86% | 41,321 psi | 69% | 2690 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,789 psi | 45% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,787 psi | 74% | 2635 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 45,397 psi | 76% | 2664 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,683 psi | 68% | 2562 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,234 psi | 68% | 2530 fps | 95.7% |
| IMR 4350 | <<locked>> | 88% | 42,308 psi | 71% | 2625 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,450 psi | 65% | 2520 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 30,240 psi | 51% | 2395 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 45,556 psi | 77% | 2707 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 48,486 psi | 82% | 2710 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,312 psi | 81% | 2664 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 43,685 psi | 73% | 2621 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,926 psi | 60% | 2470 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 38,682 psi | 65% | 2552 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 35,853 psi | 60% | 2533 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 47,732 psi | 80% | 2680 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,167 psi | 81% | 2684 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,816 psi | 74% | 2664 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 44,889 psi | 75% | 2710 fps | 95% |
| Norma MRP | <<locked>> | 94% | 39,784 psi | 67% | 2710 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 32,314 psi | 54% | 2457 fps | 96% |
| Ramshot Big Game | <<locked>> | 80% | 43,642 psi | 73% | 2680 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 35,897 psi | 60% | 2552 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 98% | 41,872 psi | 70% | 2694 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,209 psi | 46% | 1585 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,293 psi | 71% | 2608 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,398 psi | 80% | 2785 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,261 psi | 64% | 2657 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,792 psi | 53% | 2474 fps | 95.5% |
| ReloadSwiss RS 70 | 83.6 gr | 82% | 33,808 psi | 57% | 2533 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 45,440 psi | 76% | 2635 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,914 psi | 65% | 2566 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 96% | 45,078 psi | 76% | 2743 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 84% | 41,916 psi | 70% | 2592 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,926 psi | 60% | 2470 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,486 psi | 82% | 2710 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,685 psi | 73% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 38,682 psi | 65% | 2552 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,943 psi | 67% | 2615 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,458 psi | 83% | 2733 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,268 psi | 79% | 2703 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,834 psi | 82% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,973 psi | 69% | 2493 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,045 psi | 67% | 2520 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 44,643 psi | 75% | 2736 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 48,530 psi | 82% | 2621 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,095 psi | 83% | 2723 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 39,552 psi | 67% | 2566 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 29,080 psi | 49% | 2418 fps | 98.2% |
| Somchem S385 | <<locked>> | 92% | 40,190 psi | 68% | 2618 fps | 95.1% |
| Unknown powder | <<locked>> | 80% | 35,085 psi | 59% | 2516 fps | 96.3% |
| Vihtavuori N133 | <<locked>> | 80% | 49,255 psi | 83% | 2608 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,105 psi | 72% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,643 psi | 77% | 2618 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,637 psi | 63% | 2500 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 33,736 psi | 57% | 2461 fps | 96.4% |
| Vihtavuori N165 | <<locked>> | 98% | 42,163 psi | 71% | 2641 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 44,019 psi | 74% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,185 psi | 56% | 2461 fps | 96% |
| Vihtavuori N555 | <<locked>> | 84% | 28,514 psi | 48% | 2408 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,272 psi | 56% | 2438 fps | 98.4% |
| Winchester 760 | <<locked>> | 82% | 39,885 psi | 67% | 2635 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,498 psi | 45% | 2408 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,253 psi | 79% | 2740 fps | 95.8% |
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 R Verney-Carron loaded with the .375 | 260gr | Nosler AccuBond. Alliant Reloder-26 delivers the highest muzzle velocity at 2,936 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,936 fps. Accurate 3100 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 (410 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 260.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .375 R Verney-Carron with the .375 | 260gr | Nosler AccuBond 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.