Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 150gr | Norma FMJ SemiP 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, Alliant Reloder-16 and Hodgdon Superformance.
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 2495 | <<locked>> | 84% | 52,127 psi | 87% | 2674 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,056 psi | 90% | 2726 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,108 psi | 77% | 2690 fps | 97.9% |
| Accurate 4064 | <<locked>> | 86% | 52,402 psi | 87% | 2723 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 52,127 psi | 87% | 2808 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 52,025 psi | 86% | 2746 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,156 psi | 88% | 2753 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,606 psi | 89% | 2838 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,215 psi | 90% | 2746 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 51,503 psi | 86% | 2861 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,388 psi | 89% | 2838 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,374 psi | 89% | 2772 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,795 psi | 89% | 2792 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,084 psi | 88% | 2861 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,331 psi | 90% | 2897 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,591 psi | 87% | 2828 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,555 psi | 72% | 2717 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,319 psi | 64% | 2618 fps | 96.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,429 psi | 82% | 2894 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 51,561 psi | 86% | 2759 fps | 99.7% |
| Bofors RP3 | <<locked>> | 88% | 53,896 psi | 90% | 2785 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,911 psi | 90% | 2766 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,969 psi | 90% | 2779 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 51,155 psi | 85% | 2746 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 92% | 51,126 psi | 85% | 2802 fps | 98% |
| Hodgdon H4350 | <<locked>> | 90% | 51,822 psi | 86% | 2769 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 82% | 52,547 psi | 87% | 2756 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,301 psi | 89% | 2792 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 52,301 psi | 87% | 2792 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 51,111 psi | 85% | 2831 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,998 psi | 60% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,780 psi | 89% | 2759 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 52,924 psi | 88% | 2740 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 52,562 psi | 87% | 2733 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,315 psi | 87% | 2713 fps | 98.1% |
| IMR 4350 | <<locked>> | 96% | 54,259 psi | 90% | 2789 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,257 psi | 87% | 2740 fps | 98% |
| IMR 4831 | <<locked>> | 96% | 52,765 psi | 88% | 2802 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 51,793 psi | 86% | 2769 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,215 psi | 90% | 2746 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 51,967 psi | 86% | 2723 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 51,459 psi | 85% | 2677 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 52,591 psi | 87% | 2730 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 51,996 psi | 86% | 2740 fps | 99% |
| Lovex S070 | <<locked>> | 94% | 53,127 psi | 88% | 2776 fps | 98.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,290 psi | 64% | 2543 fps | 95.8% |
| Norma 201 | <<locked>> | 84% | 54,157 psi | 90% | 2743 fps | 100% |
| Norma 202 | <<locked>> | 82% | 51,547 psi | 86% | 2697 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,055 psi | 88% | 2779 fps | 100% |
| Norma 204 | <<locked>> | 94% | 51,314 psi | 85% | 2785 fps | 96.2% |
| Norma MRPᴾ | <<locked>> | 100% | 48,805 psi | 81% | 2844 fps | 97.5% |
| Norma URP | <<locked>> | 94% | 51,387 psi | 85% | 2799 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 86% | 53,563 psi | 89% | 2805 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 53,548 psi | 89% | 2848 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 54,186 psi | 90% | 2766 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,186 psi | 90% | 2782 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,419 psi | 61% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 51,372 psi | 85% | 2730 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,360 psi | 90% | 2858 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,853 psi | 89% | 2890 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 51,866 psi | 86% | 2828 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 50,923 psi | 85% | 2851 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 84% | 51,372 psi | 85% | 2694 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,070 psi | 90% | 2782 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,547 psi | 86% | 2812 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 92% | 53,911 psi | 90% | 2766 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 51,996 psi | 86% | 2740 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 82% | 51,967 psi | 86% | 2723 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 52,591 psi | 87% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 53,127 psi | 88% | 2776 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,127 psi | 87% | 2789 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,939 psi | 88% | 2746 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,737 psi | 89% | 2769 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,185 psi | 87% | 2635 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 52,620 psi | 87% | 2638 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 51,779 psi | 86% | 2690 fps | 98% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,068 psi | 85% | 2808 fps | 96.6% |
| Somchem S335 | <<locked>> | 82% | 51,576 psi | 86% | 2631 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 52,475 psi | 87% | 2736 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,070 psi | 90% | 2776 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 52,953 psi | 88% | 2848 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,257 psi | 87% | 2792 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 82% | 52,620 psi | 87% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 51,517 psi | 86% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 51,953 psi | 86% | 2677 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,170 psi | 87% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,447 psi | 89% | 2792 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 86% | 53,345 psi | 89% | 2717 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 52,460 psi | 87% | 2795 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,660 psi | 81% | 2795 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,432 psi | 89% | 2769 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 51,430 psi | 85% | 2805 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,102 psi | 65% | 2743 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,693 psi | 89% | 2776 fps | 100% |
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 2495 | <<locked>> | 80% | 45,643 psi | 76% | 2579 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,324 psi | 74% | 2562 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 37,565 psi | 62% | 2530 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 43,221 psi | 72% | 2579 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,198 psi | 53% | 2418 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 48,863 psi | 81% | 2694 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,524 psi | 69% | 2549 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 47,079 psi | 78% | 2726 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,952 psi | 85% | 2697 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,962 psi | 75% | 2743 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 46,949 psi | 78% | 2726 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,597 psi | 69% | 2572 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,483 psi | 74% | 2635 fps | 99.3% |
| Alliant Reloder-16 | 43 gr | 80% | 32,343 psi | 54% | 2434 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,143 psi | 60% | 2556 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,311 psi | 77% | 2720 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,239 psi | 47% | 2346 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,998 psi | 60% | 2562 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,476 psi | 57% | 2572 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,428 psi | 80% | 2707 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 41,510 psi | 69% | 2579 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,148 psi | 70% | 2556 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,386 psi | 84% | 2723 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,192 psi | 70% | 2585 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 39,262 psi | 65% | 2579 fps | 95% |
| Hodgdon H4350 | <<locked>> | 86% | 45,411 psi | 75% | 2654 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 49,342 psi | 82% | 2707 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,791 psi | 49% | 2336 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,716 psi | 76% | 2684 fps | 100% |
| Hodgdon Superformance | 52.6 gr | 86% | 41,466 psi | 69% | 2648 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 45% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,384 psi | 79% | 2657 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 49,472 psi | 82% | 2690 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,642 psi | 73% | 2582 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,919 psi | 76% | 2605 fps | 96.8% |
| IMR 4350 | <<locked>> | 88% | 42,482 psi | 71% | 2585 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,031 psi | 68% | 2536 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 31,241 psi | 52% | 2379 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 45,585 psi | 76% | 2664 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 50,952 psi | 85% | 2697 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,428 psi | 80% | 2671 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,385 psi | 80% | 2628 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 43,743 psi | 73% | 2585 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,897 psi | 60% | 2431 fps | 95.3% |
| Lovex S070 | <<locked>> | 84% | 38,783 psi | 64% | 2510 fps | 95% |
| Lovex S071 | <<locked>> | 98% | 35,984 psi | 60% | 2493 fps | 95% |
| Norma 201 | <<locked>> | 80% | 47,732 psi | 79% | 2644 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,327 psi | 80% | 2648 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,830 psi | 73% | 2625 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 48,080 psi | 80% | 2726 fps | 95.4% |
| Norma MRP | <<locked>> | 96% | 42,627 psi | 71% | 2723 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 32,387 psi | 54% | 2418 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 43,743 psi | 73% | 2641 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 38,551 psi | 64% | 2569 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 51,010 psi | 85% | 2713 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,647 psi | 84% | 2730 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,108 psi | 45% | 1565 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,366 psi | 70% | 2569 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,340 psi | 79% | 2743 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,450 psi | 64% | 2618 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,272 psi | 57% | 2490 fps | 95.9% |
| ReloadSwiss RS 70 | 49.3 gr | 84% | 36,230 psi | 60% | 2549 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 45,513 psi | 76% | 2598 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,001 psi | 65% | 2526 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 96% | 45,136 psi | 75% | 2700 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 84% | 42,148 psi | 70% | 2556 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,897 psi | 60% | 2431 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,428 psi | 80% | 2671 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,743 psi | 73% | 2585 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 38,783 psi | 64% | 2510 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,900 psi | 66% | 2572 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,400 psi | 82% | 2690 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,210 psi | 78% | 2664 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,921 psi | 81% | 2589 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,046 psi | 68% | 2461 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,089 psi | 67% | 2480 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,761 psi | 79% | 2749 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 48,486 psi | 81% | 2585 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,269 psi | 82% | 2684 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 39,566 psi | 66% | 2526 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 29,182 psi | 48% | 2375 fps | 97.7% |
| Somchem S385 | <<locked>> | 94% | 43,033 psi | 71% | 2631 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 49,342 psi | 82% | 2575 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,397 psi | 75% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,745 psi | 76% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,724 psi | 63% | 2464 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 33,808 psi | 56% | 2425 fps | 96% |
| Vihtavuori N540 | <<locked>> | 80% | 44,251 psi | 74% | 2575 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,402 psi | 55% | 2425 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 30,603 psi | 51% | 2421 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,402 psi | 55% | 2402 fps | 98% |
| Winchester 760 | <<locked>> | 84% | 39,494 psi | 66% | 2582 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,224 psi | 47% | 2421 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,036 psi | 78% | 2671 fps | 99.9% |
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 7 x 64 Brenneke loaded with the .284 | 150gr | Norma FMJ SemiP. Alliant Reloder-17 delivers the highest muzzle velocity at 2,897 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,897 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 (415 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:12.0 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, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for 7 x 64 Brenneke with the .284 | 150gr | Norma FMJ SemiP 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.