Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 155gr | Frontier PH HPFB bullet and 96 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 53,592 psi | 89% | 2585 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 52,446 psi | 87% | 2612 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 53,954 psi | 90% | 2674 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 51,445 psi | 85% | 2612 fps | 97% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,902 psi | 71% | 2572 fps | 97% |
| Accurate 4064 | <<locked>> | 88% | 52,605 psi | 87% | 2661 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 52,330 psi | 87% | 2743 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 52,910 psi | 88% | 2687 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 53,882 psi | 90% | 2690 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 50,589 psi | 84% | 2717 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 51,938 psi | 86% | 2641 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 52,765 psi | 88% | 2615 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 52,112 psi | 87% | 2799 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,041 psi | 90% | 2713 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,404 psi | 90% | 2733 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 53,519 psi | 89% | 2795 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 50,937 psi | 85% | 2776 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 49,559 psi | 82% | 2707 fps | 95.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,843 psi | 68% | 2598 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,687 psi | 76% | 2759 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 52,359 psi | 87% | 2700 fps | 99.7% |
| Bofors RP3 | <<locked>> | 90% | 54,433 psi | 90% | 2723 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 51,300 psi | 85% | 2651 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,345 psi | 89% | 2621 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 51,111 psi | 85% | 2667 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 51,909 psi | 86% | 2687 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 94% | 51,474 psi | 86% | 2736 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 92% | 52,344 psi | 87% | 2703 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 84% | 53,461 psi | 89% | 2700 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,447 psi | 89% | 2726 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 52,605 psi | 87% | 2726 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 51,837 psi | 86% | 2769 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 60% | 1650 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,331 psi | 90% | 2697 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,345 psi | 89% | 2677 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,345 psi | 89% | 2674 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,084 psi | 88% | 2651 fps | 98% |
| IMR 4350 | <<locked>> | 96% | 51,430 psi | 85% | 2674 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,084 psi | 88% | 2680 fps | 97.9% |
| IMR 4831 | <<locked>> | 98% | 52,910 psi | 88% | 2736 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 52,417 psi | 87% | 2710 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 51,938 psi | 86% | 2641 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 52,634 psi | 87% | 2664 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 52,301 psi | 87% | 2618 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 53,287 psi | 89% | 2671 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 52,431 psi | 87% | 2674 fps | 98.9% |
| Lovex S070 | <<locked>> | 96% | 53,229 psi | 88% | 2707 fps | 98.3% |
| Norma 201 | <<locked>> | 84% | 51,561 psi | 86% | 2635 fps | 100% |
| Norma 202 | <<locked>> | 84% | 52,243 psi | 87% | 2638 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,650 psi | 89% | 2717 fps | 100% |
| Norma 204 | <<locked>> | 96% | 51,909 psi | 86% | 2720 fps | 96.1% |
| Norma MRPᴾ | <<locked>> | 100% | 45,585 psi | 76% | 2717 fps | 96.5% |
| Norma URP | <<locked>> | 96% | 51,256 psi | 85% | 2726 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 88% | 54,012 psi | 90% | 2743 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 53,519 psi | 89% | 2779 fps | 98.9% |
| Ramshot TAC | <<locked>> | 82% | 51,750 psi | 86% | 2654 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 82% | 51,474 psi | 86% | 2674 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,274 psi | 60% | 1690 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 52,112 psi | 87% | 2671 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 51,459 psi | 85% | 2743 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,259 psi | 90% | 2825 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 51,851 psi | 86% | 2762 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 51,416 psi | 85% | 2789 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 82% | 52,837 psi | 88% | 2618 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 52,156 psi | 87% | 2635 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,317 psi | 90% | 2717 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 51,300 psi | 85% | 2651 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 52,431 psi | 87% | 2674 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 52,634 psi | 87% | 2664 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,287 psi | 89% | 2671 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,229 psi | 88% | 2707 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 52,489 psi | 87% | 2726 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,867 psi | 89% | 2687 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 51,343 psi | 85% | 2661 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 52,866 psi | 88% | 2575 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,156 psi | 88% | 2575 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 52,634 psi | 87% | 2628 fps | 97.9% |
| Somchem S335 | <<locked>> | 84% | 52,359 psi | 87% | 2575 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,316 psi | 89% | 2677 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 51,314 psi | 85% | 2667 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,736 psi | 88% | 2779 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,182 psi | 82% | 2674 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 84% | 53,200 psi | 88% | 2562 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 52,011 psi | 86% | 2602 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 52,620 psi | 87% | 2618 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 52,518 psi | 87% | 2648 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 53,896 psi | 90% | 2730 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 52,083 psi | 87% | 2638 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,201 psi | 90% | 2661 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 52,692 psi | 88% | 2730 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,063 psi | 75% | 2674 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 53,882 psi | 90% | 2707 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 52,083 psi | 87% | 2684 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 51,808 psi | 86% | 2743 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,651 psi | 61% | 2615 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 84% | 51,010 psi | 85% | 2667 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 2015 | <<locked>> | 80% | 50,647 psi | 84% | 2546 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,207 psi | 72% | 2477 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,328 psi | 84% | 2625 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,252 psi | 75% | 2510 fps | 95.5% |
| Accurate 3100 | <<locked>> | 96% | 37,478 psi | 62% | 2467 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 40,828 psi | 68% | 2474 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,430 psi | 54% | 2369 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 46,514 psi | 77% | 2585 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 39,523 psi | 66% | 2444 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 98% | 47,456 psi | 79% | 2661 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,559 psi | 81% | 2589 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,342 psi | 82% | 2569 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,525 psi | 71% | 2628 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,494 psi | 66% | 2470 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,163 psi | 70% | 2526 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,692 psi | 54% | 2379 fps | 95.6% |
| Alliant Reloder-17 | 42.7 gr | 80% | 33,997 psi | 56% | 2444 fps | 98% |
| Alliant Reloder-19 | <<locked>> | 98% | 46,630 psi | 77% | 2654 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,239 psi | 47% | 2290 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 92% | 34,693 psi | 58% | 2520 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,759 psi | 76% | 2592 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 39,233 psi | 65% | 2474 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 42,612 psi | 71% | 2497 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,227 psi | 83% | 2575 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,747 psi | 79% | 2615 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,856 psi | 66% | 2477 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 42,337 psi | 70% | 2575 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 88% | 46,006 psi | 76% | 2598 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 46,949 psi | 78% | 2595 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,108 psi | 47% | 2234 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,004 psi | 71% | 2572 fps | 99.8% |
| Hodgdon Superformance | 49.7 gr | 88% | 41,872 psi | 70% | 2592 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,556 psi | 44% | 1470 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,063 psi | 75% | 2549 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 47,079 psi | 78% | 2589 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,510 psi | 69% | 2474 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,932 psi | 73% | 2497 fps | 96.1% |
| IMR 4350 | <<locked>> | 90% | 42,801 psi | 71% | 2526 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,640 psi | 69% | 2480 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 31,415 psi | 52% | 2329 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 43,207 psi | 72% | 2556 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 48,559 psi | 81% | 2589 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,079 psi | 77% | 2569 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,296 psi | 77% | 2520 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 41,553 psi | 69% | 2477 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 36,289 psi | 60% | 2379 fps | 95.3% |
| Lovex S070 | <<locked>> | 86% | 39,117 psi | 65% | 2457 fps | 95% |
| Norma 201 | <<locked>> | 80% | 45,498 psi | 76% | 2536 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,108 psi | 77% | 2546 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,539 psi | 69% | 2516 fps | 99.1% |
| Norma 204 | <<locked>> | 94% | 48,356 psi | 80% | 2661 fps | 95.2% |
| Norma MRP | <<locked>> | 98% | 42,801 psi | 71% | 2661 fps | 95.6% |
| Norma URP | <<locked>> | 82% | 32,634 psi | 54% | 2369 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 41,292 psi | 69% | 2533 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 38,754 psi | 64% | 2513 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 48,486 psi | 81% | 2602 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,138 psi | 80% | 2621 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,035 psi | 45% | 1509 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,306 psi | 67% | 2461 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,860 psi | 75% | 2635 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,187 psi | 60% | 2507 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,272 psi | 57% | 2434 fps | 95.9% |
| ReloadSwiss RS 70 | 46.6 gr | 86% | 36,521 psi | 61% | 2493 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 49,719 psi | 83% | 2572 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,540 psi | 72% | 2497 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 36,898 psi | 61% | 2421 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 86% | 42,612 psi | 71% | 2497 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,289 psi | 60% | 2379 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,079 psi | 77% | 2569 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,553 psi | 69% | 2477 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 39,117 psi | 65% | 2457 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,855 psi | 63% | 2470 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,992 psi | 78% | 2579 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,150 psi | 75% | 2559 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,833 psi | 78% | 2487 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,117 psi | 65% | 2362 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 40,611 psi | 67% | 2428 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 46,412 psi | 77% | 2487 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,601 psi | 77% | 2575 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 37,507 psi | 62% | 2421 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 27,398 psi | 46% | 2270 fps | 96.9% |
| Somchem S385 | <<locked>> | 96% | 43,047 psi | 72% | 2566 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 47,224 psi | 78% | 2477 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,047 psi | 72% | 2470 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,613 psi | 72% | 2484 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,810 psi | 59% | 2365 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 31,836 psi | 53% | 2316 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 48,892 psi | 81% | 2589 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,945 psi | 70% | 2474 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 33,620 psi | 56% | 2372 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 88% | 30,371 psi | 50% | 2362 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,575 psi | 52% | 2293 fps | 97.2% |
| Winchester 748 | <<locked>> | 80% | 48,573 psi | 81% | 2631 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 39,726 psi | 66% | 2523 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,384 psi | 47% | 2369 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,498 psi | 74% | 2562 fps | 99.7% |
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 114 powders for 7 x 64 Brenneke loaded with the .284 | 155gr | Frontier PH HPFB. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,825 fps; across all powders the maximum-charge window runs from 1,650 fps to 2,825 fps. Accurate 3100 gives the best case fill at 100 %, and 114 of the 114 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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 7 x 64 Brenneke with the .284 | 155gr | Frontier PH HPFB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Bofors RP15 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.