Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 154gr | Reichenberg HDB Universal bullet and 96 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Reloder-16.
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 2495 | <<locked>> | 86% | 53,780 psi | 89% | 2648 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 52,620 psi | 87% | 2654 fps | 97.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,512 psi | 74% | 2618 fps | 97.5% |
| Accurate 4064 | <<locked>> | 88% | 54,172 psi | 90% | 2700 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,027 psi | 90% | 2789 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 54,114 psi | 90% | 2726 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 51,764 psi | 86% | 2677 fps | 99.8% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,083 psi | 87% | 2762 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 52,823 psi | 88% | 2674 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,998 psi | 90% | 2648 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,737 psi | 89% | 2841 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 51,866 psi | 86% | 2762 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 51,895 psi | 86% | 2700 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 52,272 psi | 87% | 2720 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 51,764 psi | 86% | 2792 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,431 psi | 87% | 2818 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,097 psi | 85% | 2753 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,061 psi | 70% | 2644 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,398 psi | 79% | 2812 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,635 psi | 89% | 2740 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 52,504 psi | 87% | 2717 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 52,504 psi | 87% | 2690 fps | 97.6% |
| Hodgdon BL-C2 | <<locked>> | 82% | 52,228 psi | 87% | 2703 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,243 psi | 88% | 2730 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 52,953 psi | 88% | 2782 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 92% | 53,548 psi | 89% | 2746 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 82% | 51,184 psi | 85% | 2684 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 51,242 psi | 85% | 2717 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,027 psi | 90% | 2766 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,243 psi | 88% | 2815 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 60% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 52,214 psi | 87% | 2687 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 51,488 psi | 86% | 2671 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,462 psi | 90% | 2710 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,360 psi | 90% | 2694 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 52,808 psi | 88% | 2717 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,230 psi | 90% | 2720 fps | 98.3% |
| IMR 4831 | <<locked>> | 96% | 50,836 psi | 84% | 2723 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 53,635 psi | 89% | 2746 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 52,823 psi | 88% | 2674 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,838 psi | 89% | 2700 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,461 psi | 89% | 2657 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,433 psi | 90% | 2703 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,650 psi | 89% | 2713 fps | 99.2% |
| Lovex S070 | <<locked>> | 94% | 51,517 psi | 86% | 2700 fps | 98.1% |
| Norma 201 | <<locked>> | 84% | 52,794 psi | 88% | 2671 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,490 psi | 89% | 2674 fps | 100% |
| Norma 203B | <<locked>> | 86% | 51,532 psi | 86% | 2707 fps | 100% |
| Norma 204 | <<locked>> | 96% | 53,171 psi | 88% | 2762 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 47,282 psi | 79% | 2766 fps | 97.1% |
| Norma URP | <<locked>> | 96% | 52,794 psi | 88% | 2772 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 52,025 psi | 86% | 2733 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 51,590 psi | 86% | 2769 fps | 98.7% |
| Ramshot TAC | <<locked>> | 82% | 53,011 psi | 88% | 2697 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 52,852 psi | 88% | 2713 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,303 psi | 60% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,272 psi | 89% | 2710 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,736 psi | 88% | 2782 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 52,141 psi | 87% | 2815 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 53,635 psi | 89% | 2808 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 52,939 psi | 88% | 2835 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 82% | 53,925 psi | 90% | 2654 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,388 psi | 89% | 2674 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 52,359 psi | 87% | 2710 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,908 psi | 83% | 2736 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 92% | 52,504 psi | 87% | 2690 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,650 psi | 89% | 2713 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,838 psi | 89% | 2700 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,433 psi | 90% | 2703 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 51,517 psi | 86% | 2700 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,056 psi | 90% | 2769 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 51,663 psi | 86% | 2677 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 52,359 psi | 87% | 2697 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,172 psi | 90% | 2612 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 51,358 psi | 85% | 2572 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,737 psi | 89% | 2667 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,429 psi | 82% | 2730 fps | 96.2% |
| Somchem S335 | <<locked>> | 84% | 53,577 psi | 89% | 2608 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 51,184 psi | 85% | 2667 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 52,692 psi | 88% | 2707 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 50,981 psi | 85% | 2772 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,444 psi | 84% | 2713 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 82% | 51,314 psi | 85% | 2552 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,359 psi | 89% | 2638 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,751 psi | 89% | 2651 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,795 psi | 89% | 2684 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 51,764 psi | 86% | 2717 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 53,316 psi | 89% | 2674 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 52,054 psi | 86% | 2651 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,447 psi | 90% | 2776 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,528 psi | 77% | 2713 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 51,750 psi | 86% | 2697 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,272 psi | 89% | 2720 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,287 psi | 89% | 2785 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,811 psi | 63% | 2667 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 52,359 psi | 87% | 2707 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% | 44,556 psi | 74% | 2516 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,236 psi | 72% | 2493 fps | 95.2% |
| Accurate 3100 | <<locked>> | 94% | 36,129 psi | 60% | 2457 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 42,163 psi | 70% | 2516 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,154 psi | 52% | 2352 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 47,732 psi | 79% | 2625 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 40,393 psi | 67% | 2480 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 98% | 48,675 psi | 81% | 2703 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,777 psi | 83% | 2628 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,647 psi | 84% | 2605 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,555 psi | 72% | 2664 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 48,486 psi | 81% | 2703 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,422 psi | 67% | 2507 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,337 psi | 72% | 2566 fps | 99.1% |
| Alliant Reloder-16 | 40.9 gr | 80% | 31,430 psi | 52% | 2365 fps | 95.2% |
| Alliant Reloder-17 | 44 gr | 80% | 34,896 psi | 58% | 2484 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,834 psi | 79% | 2697 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,109 psi | 48% | 2333 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,417 psi | 56% | 2503 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,065 psi | 78% | 2635 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 40,147 psi | 67% | 2510 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 43,569 psi | 72% | 2536 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,907 psi | 81% | 2651 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,930 psi | 68% | 2516 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 86% | 40,669 psi | 68% | 2562 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 47,224 psi | 78% | 2638 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 48,196 psi | 80% | 2635 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,848 psi | 48% | 2270 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,164 psi | 73% | 2612 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 43,033 psi | 71% | 2635 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,600 psi | 44% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,992 psi | 76% | 2585 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 48,269 psi | 80% | 2625 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,438 psi | 71% | 2513 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,005 psi | 75% | 2536 fps | 96.5% |
| IMR 4350 | <<locked>> | 90% | 43,903 psi | 73% | 2566 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,366 psi | 70% | 2513 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 32,213 psi | 54% | 2362 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 44,440 psi | 74% | 2598 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 49,777 psi | 83% | 2628 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,326 psi | 79% | 2605 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,239 psi | 78% | 2559 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 42,511 psi | 71% | 2516 fps | 99.8% |
| Lovex S065 | <<locked>> | 80% | 35,128 psi | 58% | 2369 fps | 95% |
| Lovex S070 | <<locked>> | 86% | 40,059 psi | 67% | 2493 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 46,789 psi | 78% | 2579 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,079 psi | 78% | 2579 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,728 psi | 71% | 2556 fps | 99.4% |
| Norma 204 | <<locked>> | 94% | 49,647 psi | 82% | 2707 fps | 95.7% |
| Norma MRP | <<locked>> | 96% | 41,249 psi | 69% | 2648 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 31,401 psi | 52% | 2352 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 42,337 psi | 70% | 2569 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 37,275 psi | 62% | 2497 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 49,734 psi | 83% | 2644 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,516 psi | 82% | 2661 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,079 psi | 45% | 1526 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,292 psi | 69% | 2500 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,890 psi | 76% | 2667 fps | 99.4% |
| ReloadSwiss RS 60 | 44 gr | 80% | 37,130 psi | 62% | 2546 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,040 psi | 55% | 2421 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 35,070 psi | 58% | 2477 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 50,792 psi | 84% | 2608 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,527 psi | 74% | 2533 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,855 psi | 63% | 2457 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 46,514 psi | 77% | 2677 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 86% | 43,569 psi | 72% | 2536 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,128 psi | 58% | 2369 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,326 psi | 79% | 2605 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,511 psi | 71% | 2516 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 40,059 psi | 67% | 2493 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,696 psi | 64% | 2503 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,037 psi | 80% | 2618 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,977 psi | 76% | 2595 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,877 psi | 80% | 2523 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,030 psi | 67% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,553 psi | 69% | 2464 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 46,079 psi | 77% | 2674 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 47,616 psi | 79% | 2523 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,950 psi | 80% | 2615 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 38,682 psi | 64% | 2464 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 28,108 psi | 47% | 2306 fps | 97.3% |
| Somchem S385 | <<locked>> | 94% | 41,669 psi | 69% | 2559 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 48,269 psi | 80% | 2510 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,193 psi | 73% | 2507 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,570 psi | 74% | 2516 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,666 psi | 61% | 2398 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 32,808 psi | 55% | 2359 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 49,821 psi | 83% | 2621 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,989 psi | 71% | 2510 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,329 psi | 54% | 2356 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 86% | 29,356 psi | 49% | 2349 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,489 psi | 54% | 2336 fps | 97.7% |
| Winchester 748 | <<locked>> | 80% | 49,792 psi | 83% | 2671 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,930 psi | 68% | 2569 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,427 psi | 46% | 2352 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,876 psi | 76% | 2605 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 96 powders for 7 x 64 Brenneke loaded with the .284 | 154gr | Reichenberg HDB Universal. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,841 fps; across all powders the maximum-charge window runs from 1,670 fps to 2,841 fps. Accurate 3100 gives the best case fill at 100 %, and 96 of the 96 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 154.0 gr projectile in 0.284" calls for a 1:10.0 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. Alliant Reloder-17, ReloadSwiss RS 60, Alliant Reloder-16 rank at the top here: for 7 x 64 Brenneke with the .284 | 154gr | Reichenberg HDB Universal 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.