Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 140gr | Peregrine VLR-4 bullet and 97 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 60 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.
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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>> | 84% | 52,460 psi | 87% | 2720 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,273 psi | 90% | 2792 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,867 psi | 89% | 2785 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,431 psi | 87% | 2802 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,969 psi | 90% | 2782 fps | 96.4% |
| Accurate 4064 | <<locked>> | 92% | 53,838 psi | 89% | 2831 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,563 psi | 89% | 2904 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 51,619 psi | 86% | 2815 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 92% | 52,765 psi | 88% | 2815 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,157 psi | 90% | 2818 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 51,314 psi | 85% | 2749 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 51,039 psi | 85% | 2923 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 52,315 psi | 87% | 2835 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 53,156 psi | 88% | 2858 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,011 psi | 86% | 2913 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,084 psi | 88% | 2953 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,666 psi | 61% | 2635 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,828 psi | 68% | 2785 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 51,387 psi | 85% | 2825 fps | 99.1% |
| Bofors RP3 | <<locked>> | 92% | 52,634 psi | 87% | 2844 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 53,388 psi | 89% | 2818 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 52,649 psi | 87% | 2756 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,287 psi | 89% | 2848 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 51,706 psi | 86% | 2890 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 92% | 53,824 psi | 89% | 2858 fps | 99% |
| Hodgdon H414 | <<locked>> | 98% | 53,287 psi | 89% | 2904 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 96% | 54,331 psi | 90% | 2871 fps | 96% |
| Hodgdon H4895 | <<locked>> | 86% | 52,156 psi | 87% | 2825 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,211 psi | 80% | 2792 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 51,445 psi | 85% | 2858 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,331 psi | 90% | 2943 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,128 psi | 58% | 1736 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,548 psi | 89% | 2831 fps | 99.9% |
| IMR 3031 | <<locked>> | 86% | 51,866 psi | 86% | 2812 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 52,199 psi | 87% | 2795 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 52,489 psi | 87% | 2776 fps | 96.9% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,592 psi | 89% | 2841 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 52,170 psi | 87% | 2799 fps | 96.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,821 psi | 84% | 2844 fps | 99.1% |
| IMR 4895 | <<locked>> | 88% | 50,894 psi | 85% | 2831 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 86% | 54,157 psi | 90% | 2818 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,940 psi | 90% | 2802 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,447 psi | 90% | 2841 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 51,590 psi | 86% | 2746 fps | 99.7% |
| Lovex S062 | <<locked>> | 90% | 51,764 psi | 86% | 2792 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,317 psi | 90% | 2841 fps | 98.5% |
| Lovex S070 | <<locked>> | 98% | 51,924 psi | 86% | 2822 fps | 97.1% |
| Norma 201 | <<locked>> | 88% | 53,795 psi | 89% | 2812 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,273 psi | 90% | 2815 fps | 100% |
| Norma 203B | <<locked>> | 90% | 52,330 psi | 87% | 2844 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 53,113 psi | 88% | 2900 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 90% | 52,750 psi | 88% | 2867 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,880 psi | 86% | 2890 fps | 97.8% |
| Ramshot TAC | <<locked>> | 84% | 51,111 psi | 85% | 2779 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,838 psi | 89% | 2851 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 51,677 psi | 86% | 2769 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,418 psi | 59% | 1775 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,708 psi | 89% | 2802 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,404 psi | 90% | 2841 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 53,272 psi | 89% | 2920 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 52,837 psi | 88% | 2956 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,461 psi | 89% | 2930 fps | 99.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,650 psi | 89% | 2959 fps | 99% |
| Rottweil R 901 | <<locked>> | 84% | 51,227 psi | 85% | 2746 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,070 psi | 90% | 2808 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 52,489 psi | 87% | 2838 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 53,388 psi | 89% | 2818 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,317 psi | 90% | 2841 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,447 psi | 90% | 2841 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 51,764 psi | 86% | 2792 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 51,924 psi | 86% | 2822 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 51,213 psi | 85% | 2851 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 52,547 psi | 87% | 2808 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,447 psi | 89% | 2835 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 52,199 psi | 87% | 2710 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 52,156 psi | 87% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 51,430 psi | 85% | 2743 fps | 96.7% |
| Somchem S321 | <<locked>> | 82% | 51,866 psi | 86% | 2799 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 51,285 psi | 85% | 2703 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 52,402 psi | 87% | 2805 fps | 99.7% |
| Somchem S355 | <<locked>> | 94% | 53,142 psi | 88% | 2838 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,485 psi | 79% | 2848 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 51,851 psi | 86% | 2674 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 52,431 psi | 87% | 2697 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,606 psi | 89% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 51,314 psi | 85% | 2746 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 51,169 psi | 85% | 2769 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 52,156 psi | 87% | 2841 fps | 99% |
| Vihtavuori N530 | <<locked>> | 84% | 50,995 psi | 85% | 2762 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 52,997 psi | 88% | 2789 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 51,111 psi | 85% | 2844 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,653 psi | 66% | 2710 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 52,881 psi | 88% | 2828 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 50,836 psi | 84% | 2812 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 53,592 psi | 89% | 2910 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,648 psi | 54% | 2608 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 88% | 53,258 psi | 88% | 2844 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% | 46,180 psi | 77% | 2628 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,662 psi | 84% | 2740 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,363 psi | 64% | 2539 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,847 psi | 76% | 2700 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,430 psi | 84% | 2726 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 36,332 psi | 60% | 2530 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 34,896 psi | 58% | 2556 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 42,569 psi | 71% | 2651 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 36,216 psi | 60% | 2500 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,715 psi | 74% | 2664 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 44,831 psi | 74% | 2657 fps | 100% |
| Alliant Power Pro 2000-MR | 44 gr | 80% | 38,609 psi | 64% | 2671 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,505 psi | 59% | 2516 fps | 97.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,305 psi | 64% | 2582 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,723 psi | 59% | 2582 fps | 95.5% |
| Alliant Reloder-17 | 43.3 gr | 80% | 30,589 psi | 51% | 2470 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,372 psi | 54% | 2523 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,014 psi | 63% | 2717 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,945 psi | 70% | 2654 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 35,056 psi | 58% | 2520 fps | 97.7% |
| Bofors RP7 | <<locked>> | 92% | 46,818 psi | 78% | 2703 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,615 psi | 77% | 2657 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,308 psi | 72% | 2680 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,863 psi | 80% | 2825 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 82% | 38,653 psi | 64% | 2582 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 94% | 46,572 psi | 77% | 2789 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 94% | 51,053 psi | 85% | 2815 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 42,946 psi | 71% | 2664 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,574 psi | 51% | 2421 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,798 psi | 64% | 2628 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 94% | 46,891 psi | 78% | 2812 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,020 psi | 43% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,408 psi | 69% | 2618 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 42,438 psi | 71% | 2661 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,014 psi | 63% | 2536 fps | 97.1% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,137 psi | 77% | 2664 fps | 95.4% |
| IMR 4350 | <<locked>> | 96% | 47,065 psi | 78% | 2733 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,905 psi | 76% | 2690 fps | 95.3% |
| IMR 4831 | <<locked>> | 90% | 36,448 psi | 61% | 2575 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 39,233 psi | 65% | 2612 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 44,715 psi | 74% | 2664 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 50,372 psi | 84% | 2749 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,495 psi | 69% | 2631 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,931 psi | 71% | 2595 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 37,753 psi | 63% | 2539 fps | 98.6% |
| Lovex S065 | <<locked>> | 88% | 39,856 psi | 66% | 2579 fps | 95.2% |
| Lovex S070 | <<locked>> | 94% | 45,542 psi | 76% | 2710 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 41,524 psi | 69% | 2602 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 41,872 psi | 70% | 2615 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,666 psi | 63% | 2572 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 35,462 psi | 59% | 2562 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 37,231 psi | 62% | 2582 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 42,496 psi | 71% | 2717 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 44,556 psi | 74% | 2664 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,947 psi | 73% | 2684 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,370 psi | 80% | 2713 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,353 psi | 44% | 1588 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,154 psi | 83% | 2749 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,785 psi | 69% | 2618 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,248 psi | 67% | 2687 fps | 97.6% |
| ReloadSwiss RS 60 | 43.3 gr | 80% | 32,605 psi | 54% | 2543 fps | 98.6% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,507 psi | 62% | 2638 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,625 psi | 67% | 2707 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 45,208 psi | 75% | 2648 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,450 psi | 66% | 2556 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 32,938 psi | 55% | 2464 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 92% | 46,818 psi | 78% | 2703 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,856 psi | 66% | 2579 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,495 psi | 69% | 2631 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,753 psi | 63% | 2539 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 94% | 45,542 psi | 76% | 2710 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,142 psi | 57% | 2513 fps | 96.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,670 psi | 71% | 2635 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,263 psi | 69% | 2621 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,294 psi | 72% | 2569 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,824 psi | 60% | 2431 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,860 psi | 75% | 2631 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 48,414 psi | 80% | 2746 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,641 psi | 71% | 2566 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,685 psi | 71% | 2641 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 33,823 psi | 56% | 2470 fps | 96.8% |
| Somchem S365 | <<locked>> | 84% | 27,659 psi | 46% | 2395 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 49,008 psi | 81% | 2631 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,642 psi | 73% | 2562 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,015 psi | 65% | 2546 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,813 psi | 66% | 2552 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,256 psi | 54% | 2411 fps | 97.7% |
| Vihtavuori N160 | <<locked>> | 88% | 37,202 psi | 62% | 2569 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 44,875 psi | 75% | 2664 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 38,159 psi | 63% | 2539 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 36,535 psi | 61% | 2569 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 94% | 32,503 psi | 54% | 2543 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,705 psi | 51% | 2385 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 44,164 psi | 73% | 2703 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 46,876 psi | 78% | 2795 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,705 psi | 51% | 2546 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,654 psi | 68% | 2628 fps | 98.7% |
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 108 powders for 7 x 64 Brenneke loaded with the .284 | 140gr | Peregrine VLR-4. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,959 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,959 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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 60, Alliant Reloder-17 rank at the top here: for 7 x 64 Brenneke with the .284 | 140gr | Peregrine VLR-4 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.