Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 140gr | Sierra HPBT GameKing 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 60, Alliant Reloder-17 and Winchester 760.
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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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>> | 82% | 51,706 psi | 86% | 2710 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 53,737 psi | 89% | 2782 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 51,547 psi | 86% | 2789 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,837 psi | 88% | 2772 fps | 96.3% |
| Accurate 4064 | <<locked>> | 90% | 53,635 psi | 89% | 2825 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 53,345 psi | 89% | 2904 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 54,056 psi | 90% | 2854 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 51,735 psi | 86% | 2802 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 52,939 psi | 88% | 2805 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 53,838 psi | 89% | 2785 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 53,563 psi | 89% | 2969 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 51,590 psi | 86% | 2825 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 52,359 psi | 87% | 2848 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,375 psi | 90% | 2959 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 94% | 52,257 psi | 87% | 2943 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,044 psi | 65% | 2694 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,569 psi | 72% | 2848 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 53,867 psi | 89% | 2871 fps | 99.5% |
| Bofors RP3 | <<locked>> | 90% | 51,982 psi | 86% | 2838 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 52,315 psi | 87% | 2805 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 51,517 psi | 86% | 2740 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 52,170 psi | 87% | 2831 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,157 psi | 90% | 2930 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 90% | 53,258 psi | 88% | 2851 fps | 99% |
| Hodgdon H414 | <<locked>> | 96% | 52,489 psi | 87% | 2897 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 94% | 53,432 psi | 89% | 2861 fps | 96% |
| Hodgdon H4895 | <<locked>> | 84% | 51,126 psi | 85% | 2812 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,763 psi | 84% | 2835 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 53,780 psi | 89% | 2897 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 53,055 psi | 88% | 2927 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,404 psi | 59% | 1745 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 52,547 psi | 87% | 2818 fps | 99.9% |
| IMR 3031 | <<locked>> | 84% | 50,995 psi | 85% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 54,462 psi | 90% | 2835 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 51,401 psi | 85% | 2766 fps | 96.9% |
| IMR 4350 | <<locked>> | 98% | 52,634 psi | 87% | 2831 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,114 psi | 90% | 2838 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,853 psi | 89% | 2894 fps | 99.5% |
| IMR 4895 | <<locked>> | 88% | 53,635 psi | 89% | 2877 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 52,939 psi | 88% | 2805 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 53,737 psi | 89% | 2831 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 53,780 psi | 89% | 2785 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 54,288 psi | 90% | 2831 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 53,592 psi | 89% | 2835 fps | 98.5% |
| Lovex S070 | <<locked>> | 96% | 51,010 psi | 85% | 2812 fps | 97.1% |
| Norma 201 | <<locked>> | 86% | 52,808 psi | 88% | 2799 fps | 100% |
| Norma 202 | <<locked>> | 86% | 53,447 psi | 89% | 2805 fps | 100% |
| Norma 203B | <<locked>> | 88% | 51,576 psi | 86% | 2835 fps | 99.8% |
| Norma URP | <<locked>> | 98% | 52,359 psi | 87% | 2890 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 88% | 51,764 psi | 86% | 2854 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 98% | 51,024 psi | 85% | 2881 fps | 97.8% |
| Ramshot TAC | <<locked>> | 84% | 53,229 psi | 88% | 2822 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 52,881 psi | 88% | 2841 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 53,824 psi | 89% | 2805 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,027 psi | 60% | 1791 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 53,316 psi | 89% | 2831 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 52,460 psi | 87% | 2910 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 52,054 psi | 86% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 52,707 psi | 88% | 2920 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 52,460 psi | 87% | 2946 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 84% | 53,809 psi | 89% | 2785 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 53,417 psi | 89% | 2802 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 52,156 psi | 87% | 2835 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 52,315 psi | 87% | 2805 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 96% | 53,592 psi | 89% | 2835 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 53,737 psi | 89% | 2831 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,288 psi | 90% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 51,010 psi | 85% | 2812 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 53,780 psi | 89% | 2894 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 51,692 psi | 86% | 2799 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 52,489 psi | 87% | 2825 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,273 psi | 90% | 2743 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 54,375 psi | 90% | 2740 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 53,896 psi | 90% | 2785 fps | 97.3% |
| Somchem S321 | <<locked>> | 82% | 54,201 psi | 90% | 2838 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 53,737 psi | 89% | 2740 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 51,213 psi | 85% | 2789 fps | 99.7% |
| Somchem S355 | <<locked>> | 92% | 52,388 psi | 87% | 2828 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,125 psi | 83% | 2890 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 54,027 psi | 90% | 2703 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 51,314 psi | 85% | 2684 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 52,910 psi | 88% | 2766 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 53,983 psi | 90% | 2785 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 53,780 psi | 89% | 2812 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 51,416 psi | 85% | 2835 fps | 99% |
| Vihtavuori N530 | <<locked>> | 84% | 53,374 psi | 89% | 2802 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 52,112 psi | 87% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 53,940 psi | 90% | 2894 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,685 psi | 71% | 2769 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 51,764 psi | 86% | 2818 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 53,287 psi | 89% | 2851 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 52,779 psi | 88% | 2900 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,824 psi | 58% | 2680 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 52,315 psi | 87% | 2831 fps | 99.9% |
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% | 48,588 psi | 81% | 2664 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,249 psi | 69% | 2589 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,211 psi | 80% | 2740 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 49,501 psi | 82% | 2717 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 39,015 psi | 65% | 2582 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 35,070 psi | 58% | 2559 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 44,643 psi | 74% | 2694 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 38,072 psi | 63% | 2543 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,731 psi | 78% | 2700 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,992 psi | 78% | 2690 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,712 psi | 68% | 2723 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,608 psi | 62% | 2562 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,393 psi | 67% | 2628 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,288 psi | 59% | 2572 fps | 95.5% |
| Alliant Reloder-17 | 44.4 gr | 80% | 32,547 psi | 54% | 2526 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,458 psi | 51% | 2470 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,797 psi | 63% | 2717 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,092 psi | 73% | 2700 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 37,376 psi | 62% | 2569 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 46,151 psi | 77% | 2697 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,573 psi | 81% | 2694 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,716 psi | 76% | 2726 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,328 psi | 84% | 2867 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 80% | 38,319 psi | 64% | 2572 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 90% | 43,149 psi | 72% | 2726 fps | 95% |
| Hodgdon H4350 | <<locked>> | 92% | 50,038 psi | 83% | 2805 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 45,092 psi | 75% | 2703 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,458 psi | 51% | 2415 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,133 psi | 68% | 2677 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 92% | 46,137 psi | 77% | 2802 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,513 psi | 44% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,337 psi | 72% | 2657 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 44,846 psi | 75% | 2700 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,972 psi | 66% | 2579 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 45,179 psi | 75% | 2651 fps | 95.4% |
| IMR 4350 | <<locked>> | 94% | 46,485 psi | 77% | 2726 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 45,165 psi | 75% | 2680 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 33,982 psi | 56% | 2516 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 41,394 psi | 69% | 2657 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 46,731 psi | 78% | 2700 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 43,874 psi | 73% | 2674 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,831 psi | 74% | 2635 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 39,943 psi | 66% | 2582 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 39,450 psi | 66% | 2572 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 45,295 psi | 75% | 2707 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 43,859 psi | 73% | 2648 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 44,034 psi | 73% | 2654 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,784 psi | 66% | 2615 fps | 98.1% |
| Norma URP | <<locked>> | 86% | 35,375 psi | 59% | 2559 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 39,392 psi | 65% | 2631 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 42,163 psi | 70% | 2713 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 46,601 psi | 77% | 2707 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,180 psi | 77% | 2726 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,531 psi | 84% | 2753 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,658 psi | 44% | 1598 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,888 psi | 73% | 2664 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,554 psi | 71% | 2733 fps | 98.2% |
| ReloadSwiss RS 60 | 44.4 gr | 80% | 34,621 psi | 58% | 2595 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 37,333 psi | 62% | 2631 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 40,016 psi | 66% | 2697 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 47,805 psi | 79% | 2690 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,727 psi | 69% | 2602 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 35,201 psi | 58% | 2513 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 46,151 psi | 77% | 2697 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,450 psi | 66% | 2572 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,874 psi | 73% | 2674 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,943 psi | 66% | 2582 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 45,295 psi | 75% | 2707 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,027 psi | 60% | 2559 fps | 97% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,005 psi | 75% | 2680 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,221 psi | 72% | 2664 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,092 psi | 75% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,521 psi | 62% | 2467 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 44,237 psi | 73% | 2625 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 50,850 psi | 84% | 2785 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,773 psi | 74% | 2602 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,889 psi | 75% | 2684 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 35,940 psi | 60% | 2520 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 27,949 psi | 46% | 2402 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 50,865 psi | 85% | 2661 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,426 psi | 75% | 2595 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,162 psi | 68% | 2582 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,887 psi | 70% | 2592 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,272 psi | 57% | 2457 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 34,577 psi | 57% | 2507 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 46,978 psi | 78% | 2700 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 40,393 psi | 67% | 2582 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 36,463 psi | 61% | 2566 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 92% | 32,692 psi | 54% | 2546 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,429 psi | 51% | 2379 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 46,601 psi | 77% | 2746 fps | 100% |
| Winchester 760 | 48.9 gr | 90% | 43,149 psi | 72% | 2726 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,748 psi | 51% | 2552 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,641 psi | 71% | 2664 fps | 99.1% |
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 94 powders for 7 x 64 Brenneke loaded with the .284 | 140gr | Sierra HPBT GameKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,745 fps to 2,969 fps. Alliant Reloder-16 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 58–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, Alliant Reloder-23, Alliant Reloder-26 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 60, Alliant Reloder-17, Winchester 760 rank at the top here: for 7 x 64 Brenneke with the .284 | 140gr | Sierra HPBT GameKing 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.