Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 160gr | Speer TBBC 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-16, ReloadSwiss RS 70 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% | 51,764 psi | 86% | 2566 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,809 psi | 89% | 2625 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,745 psi | 76% | 2589 fps | 98.1% |
| Accurate 4064 | <<locked>> | 86% | 52,286 psi | 87% | 2618 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 51,837 psi | 86% | 2703 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 51,735 psi | 86% | 2638 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 52,852 psi | 88% | 2644 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,200 psi | 88% | 2733 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 82% | 53,925 psi | 90% | 2638 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 51,184 psi | 85% | 2749 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,127 psi | 88% | 2664 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,476 psi | 89% | 2684 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 52,823 psi | 88% | 2756 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,969 psi | 90% | 2785 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,257 psi | 87% | 2723 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,323 psi | 72% | 2618 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,000 psi | 63% | 2523 fps | 96.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,733 psi | 81% | 2785 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 51,445 psi | 85% | 2654 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 53,882 psi | 90% | 2684 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,722 psi | 89% | 2661 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,476 psi | 89% | 2667 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 51,024 psi | 85% | 2644 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 92% | 50,937 psi | 85% | 2697 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 90% | 51,387 psi | 85% | 2661 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 82% | 52,243 psi | 87% | 2648 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 52,823 psi | 88% | 2684 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 51,851 psi | 86% | 2680 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 50,937 psi | 85% | 2730 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,042 psi | 60% | 1637 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,301 psi | 89% | 2648 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 52,678 psi | 88% | 2631 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 52,402 psi | 87% | 2628 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 51,938 psi | 86% | 2605 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 54,172 psi | 90% | 2687 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,286 psi | 87% | 2641 fps | 98.3% |
| IMR 4831 | <<locked>> | 96% | 52,344 psi | 87% | 2694 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 51,648 psi | 86% | 2664 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 53,925 psi | 90% | 2638 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 51,532 psi | 86% | 2615 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,447 psi | 90% | 2618 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 52,417 psi | 87% | 2625 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 51,764 psi | 86% | 2635 fps | 99.2% |
| Lovex S070 | <<locked>> | 94% | 52,823 psi | 88% | 2671 fps | 98.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,101 psi | 63% | 2451 fps | 96.2% |
| Norma 201 | <<locked>> | 84% | 53,867 psi | 89% | 2635 fps | 100% |
| Norma 202 | <<locked>> | 82% | 51,111 psi | 85% | 2589 fps | 100% |
| Norma 203B | <<locked>> | 86% | 52,765 psi | 88% | 2671 fps | 100% |
| Norma 204 | <<locked>> | 94% | 51,039 psi | 85% | 2680 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 48,486 psi | 81% | 2743 fps | 97.8% |
| Norma URP | <<locked>> | 96% | 54,346 psi | 90% | 2743 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 53,417 psi | 89% | 2700 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 53,156 psi | 88% | 2743 fps | 99.2% |
| Ramshot TAC | <<locked>> | 82% | 54,099 psi | 90% | 2664 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,070 psi | 90% | 2677 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,506 psi | 61% | 1677 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 51,082 psi | 85% | 2625 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,143 psi | 90% | 2746 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,606 psi | 89% | 2779 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 51,358 psi | 85% | 2723 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,172 psi | 90% | 2802 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 51,285 psi | 85% | 2589 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,737 psi | 89% | 2674 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,082 psi | 85% | 2707 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 53,722 psi | 89% | 2661 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 51,764 psi | 86% | 2635 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 51,532 psi | 86% | 2615 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 52,417 psi | 87% | 2625 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 52,823 psi | 88% | 2671 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 51,953 psi | 86% | 2687 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,881 psi | 88% | 2644 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,534 psi | 89% | 2661 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 51,880 psi | 86% | 2526 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 52,417 psi | 87% | 2533 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 51,764 psi | 86% | 2589 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,633 psi | 84% | 2700 fps | 96.9% |
| Somchem S335 | <<locked>> | 82% | 51,459 psi | 85% | 2530 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 52,402 psi | 87% | 2631 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 53,969 psi | 90% | 2674 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 52,649 psi | 87% | 2743 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,982 psi | 86% | 2687 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 82% | 52,257 psi | 87% | 2513 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 51,271 psi | 85% | 2556 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 51,735 psi | 86% | 2569 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 51,851 psi | 86% | 2605 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,200 psi | 88% | 2687 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,715 psi | 74% | 2556 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 82% | 54,404 psi | 90% | 2638 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 53,214 psi | 88% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 52,388 psi | 87% | 2694 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,124 psi | 80% | 2690 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 52,895 psi | 88% | 2661 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 51,227 psi | 85% | 2703 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,798 psi | 64% | 2644 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,621 psi | 89% | 2674 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 48,660 psi | 81% | 2625 fps | 96% |
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% | 2480 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,193 psi | 73% | 2464 fps | 95.9% |
| Accurate 3100 | <<locked>> | 92% | 35,027 psi | 58% | 2385 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 43,178 psi | 72% | 2480 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,068 psi | 53% | 2329 fps | 96% |
| ADI AR 2206H | <<locked>> | 80% | 48,689 psi | 81% | 2592 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,466 psi | 69% | 2454 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 46,992 psi | 78% | 2628 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,792 psi | 84% | 2592 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,628 psi | 74% | 2638 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,350 psi | 69% | 2474 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,338 psi | 74% | 2536 fps | 99.5% |
| Alliant Reloder-16 | 40.6 gr | 80% | 32,126 psi | 53% | 2343 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,781 psi | 59% | 2457 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 45,963 psi | 76% | 2618 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,166 psi | 47% | 2264 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,810 psi | 59% | 2470 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,053 psi | 53% | 2425 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,167 psi | 80% | 2602 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 41,408 psi | 69% | 2484 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 41,930 psi | 70% | 2457 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,053 psi | 83% | 2618 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,916 psi | 70% | 2487 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 39,044 psi | 65% | 2484 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 45,266 psi | 75% | 2556 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 49,197 psi | 82% | 2598 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,530 psi | 49% | 2247 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,571 psi | 76% | 2582 fps | 100% |
| Hodgdon Superformance | 49.7 gr | 86% | 41,118 psi | 68% | 2549 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,934 psi | 45% | 1463 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,210 psi | 78% | 2556 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,385 psi | 82% | 2585 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,584 psi | 72% | 2484 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,847 psi | 76% | 2503 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 42,119 psi | 70% | 2484 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,727 psi | 68% | 2434 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 31,067 psi | 52% | 2290 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 45,426 psi | 75% | 2562 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 50,792 psi | 84% | 2592 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,457 psi | 81% | 2572 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,327 psi | 80% | 2526 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 43,671 psi | 73% | 2487 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,882 psi | 60% | 2339 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 38,638 psi | 64% | 2418 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 35,694 psi | 59% | 2402 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 47,718 psi | 79% | 2543 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,080 psi | 80% | 2543 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,685 psi | 73% | 2526 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 47,659 psi | 79% | 2625 fps | 95.7% |
| Norma MRP | <<locked>> | 94% | 39,523 psi | 66% | 2566 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 32,227 psi | 54% | 2329 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 43,424 psi | 72% | 2539 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 35,810 psi | 59% | 2421 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 50,778 psi | 84% | 2612 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,633 psi | 84% | 2628 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,180 psi | 45% | 1496 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,206 psi | 70% | 2470 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,355 psi | 79% | 2644 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,072 psi | 63% | 2516 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,763 psi | 53% | 2346 fps | 95.4% |
| ReloadSwiss RS 70 | 45.5 gr | 82% | 33,678 psi | 56% | 2398 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 45,411 psi | 75% | 2497 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,769 psi | 64% | 2428 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 96% | 45,020 psi | 75% | 2602 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 84% | 41,930 psi | 70% | 2457 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,882 psi | 60% | 2339 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,457 psi | 81% | 2572 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,671 psi | 73% | 2487 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 38,638 psi | 64% | 2418 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,900 psi | 66% | 2480 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,153 psi | 82% | 2585 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,253 psi | 79% | 2566 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,704 psi | 81% | 2484 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,843 psi | 68% | 2362 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,972 psi | 66% | 2388 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 44,585 psi | 74% | 2598 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 48,530 psi | 81% | 2487 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,066 psi | 82% | 2582 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 39,537 psi | 66% | 2434 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 29,037 psi | 48% | 2290 fps | 98.1% |
| Somchem S385 | <<locked>> | 92% | 40,118 psi | 67% | 2484 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 49,153 psi | 82% | 2470 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,179 psi | 75% | 2470 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,513 psi | 76% | 2480 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,507 psi | 62% | 2369 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 33,634 psi | 56% | 2333 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 98% | 42,003 psi | 70% | 2507 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 51,155 psi | 85% | 2592 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,961 psi | 73% | 2474 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,141 psi | 55% | 2333 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 84% | 28,427 psi | 47% | 2280 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,257 psi | 55% | 2310 fps | 98.3% |
| Winchester 760 | <<locked>> | 84% | 39,276 psi | 65% | 2487 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,455 psi | 44% | 2283 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,949 psi | 78% | 2572 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 45,339 psi | 75% | 2569 fps | 95.1% |
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 96 powders for 7 x 64 Brenneke loaded with the .284 | 160gr | Speer TBBC. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,802 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,802 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 160.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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-16, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for 7 x 64 Brenneke with the .284 | 160gr | Speer TBBC 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.