Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 160gr | Swift A-Frame 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.
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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>> | 84% | 52,953 psi | 88% | 2585 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,301 psi | 87% | 2598 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,847 psi | 78% | 2615 fps | 98.4% |
| Accurate 4064 | <<locked>> | 86% | 52,997 psi | 88% | 2635 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 52,808 psi | 88% | 2723 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 52,750 psi | 88% | 2661 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,780 psi | 89% | 2664 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,186 psi | 90% | 2756 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,141 psi | 87% | 2772 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,099 psi | 90% | 2684 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 51,053 psi | 85% | 2654 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,012 psi | 90% | 2779 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 51,285 psi | 85% | 2753 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,229 psi | 88% | 2743 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,905 psi | 78% | 2687 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,295 psi | 74% | 2641 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,754 psi | 64% | 2546 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,038 psi | 83% | 2812 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,373 psi | 87% | 2674 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 51,285 psi | 85% | 2651 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,905 psi | 78% | 2687 fps | 96.1% |
| Bofors RP7 | <<locked>> | 90% | 51,126 psi | 85% | 2628 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,433 psi | 90% | 2684 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 51,953 psi | 86% | 2664 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 90% | 53,345 psi | 89% | 2743 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 94% | 53,795 psi | 89% | 2707 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 82% | 53,301 psi | 89% | 2667 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,070 psi | 90% | 2707 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,142 psi | 88% | 2707 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 51,909 psi | 86% | 2753 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,114 psi | 60% | 1647 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,345 psi | 89% | 2654 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 52,228 psi | 87% | 2628 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 52,750 psi | 88% | 2638 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 51,909 psi | 86% | 2615 fps | 98.4% |
| IMR 4350 | <<locked>> | 94% | 51,808 psi | 86% | 2661 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,779 psi | 88% | 2654 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,186 psi | 90% | 2726 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 52,330 psi | 87% | 2680 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,591 psi | 87% | 2635 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,011 psi | 86% | 2589 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,069 psi | 88% | 2638 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,605 psi | 87% | 2651 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 53,650 psi | 89% | 2690 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,856 psi | 65% | 2470 fps | 96.6% |
| Norma 201 | <<locked>> | 82% | 51,430 psi | 85% | 2605 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,199 psi | 87% | 2608 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,722 psi | 89% | 2690 fps | 100% |
| Norma 204 | <<locked>> | 94% | 52,098 psi | 87% | 2703 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 49,487 psi | 82% | 2766 fps | 98.1% |
| Norma URP | <<locked>> | 94% | 51,924 psi | 86% | 2710 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 54,317 psi | 90% | 2717 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,823 psi | 88% | 2779 fps | 96% |
| Ramshot Hunter | <<locked>> | 96% | 53,940 psi | 90% | 2759 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,629 psi | 76% | 2638 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 61% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 51,938 psi | 86% | 2644 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 51,547 psi | 86% | 2713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 51,010 psi | 85% | 2749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 52,518 psi | 87% | 2746 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 51,634 psi | 86% | 2772 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 52,040 psi | 86% | 2605 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 51,155 psi | 85% | 2644 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 52,591 psi | 87% | 2677 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,243 psi | 87% | 2730 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 90% | 51,126 psi | 85% | 2628 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,605 psi | 87% | 2651 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,591 psi | 87% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,069 psi | 88% | 2638 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 53,650 psi | 89% | 2690 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,852 psi | 88% | 2703 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,447 psi | 89% | 2657 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 51,111 psi | 85% | 2631 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,591 psi | 87% | 2543 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,113 psi | 88% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,547 psi | 87% | 2608 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,750 psi | 86% | 2726 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 52,127 psi | 87% | 2543 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,301 psi | 89% | 2651 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 51,459 psi | 85% | 2641 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 53,954 psi | 90% | 2762 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,040 psi | 88% | 2710 fps | 98.1% |
| Unknown powder | <<locked>> | 92% | 52,837 psi | 88% | 2717 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 82% | 53,040 psi | 88% | 2530 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,098 psi | 87% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 52,402 psi | 87% | 2585 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,779 psi | 88% | 2621 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,070 psi | 90% | 2703 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,643 psi | 76% | 2579 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 86% | 54,114 psi | 90% | 2631 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 53,214 psi | 88% | 2710 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,342 psi | 82% | 2713 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,882 psi | 90% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,345 psi | 89% | 2743 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,581 psi | 66% | 2671 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 51,576 psi | 86% | 2677 fps | 96.8% |
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% | 46,456 psi | 77% | 2497 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 43,105 psi | 72% | 2444 fps | 95.7% |
| Accurate 3100 | <<locked>> | 92% | 35,752 psi | 59% | 2408 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 43,947 psi | 73% | 2500 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,706 psi | 54% | 2349 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 80% | 49,414 psi | 82% | 2608 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,134 psi | 70% | 2470 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 44,904 psi | 75% | 2595 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,585 psi | 76% | 2661 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,061 psi | 70% | 2490 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,020 psi | 75% | 2552 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,677 psi | 54% | 2362 fps | 96.5% |
| Alliant Reloder-17 | 44.5 gr | 80% | 36,564 psi | 61% | 2484 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 44,019 psi | 73% | 2585 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,888 psi | 73% | 2628 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,948 psi | 45% | 2231 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,301 psi | 57% | 2438 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,619 psi | 54% | 2444 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,791 psi | 81% | 2618 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 42,134 psi | 70% | 2503 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 43,888 psi | 73% | 2628 fps | 95.2% |
| Bofors RP7 | <<locked>> | 82% | 40,030 psi | 67% | 2428 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,010 psi | 85% | 2635 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,554 psi | 71% | 2507 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 80% | 37,985 psi | 63% | 2464 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 88% | 44,744 psi | 74% | 2552 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 49,908 psi | 83% | 2615 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,110 psi | 50% | 2267 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,526 psi | 72% | 2552 fps | 100% |
| Hodgdon Superformance | 50.5 gr | 86% | 41,771 psi | 69% | 2569 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 45% | 1470 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,266 psi | 74% | 2513 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 45,963 psi | 76% | 2539 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,408 psi | 69% | 2448 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,785 psi | 68% | 2415 fps | 96% |
| IMR 4350 | <<locked>> | 86% | 40,176 psi | 67% | 2454 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,943 psi | 65% | 2405 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 30,690 psi | 51% | 2283 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 46,137 psi | 77% | 2582 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 49,240 psi | 82% | 2585 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,023 psi | 81% | 2543 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,411 psi | 74% | 2503 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,492 psi | 61% | 2359 fps | 96.1% |
| Lovex S070 | <<locked>> | 82% | 36,941 psi | 61% | 2388 fps | 95% |
| Lovex S071 | <<locked>> | 96% | 34,200 psi | 57% | 2372 fps | 95% |
| Norma 201 | <<locked>> | 80% | 48,457 psi | 81% | 2559 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,834 psi | 81% | 2559 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,367 psi | 74% | 2543 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 45,527 psi | 76% | 2592 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 40,408 psi | 67% | 2592 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 32,837 psi | 55% | 2349 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 80% | 44,353 psi | 74% | 2562 fps | 99.7% |
| Ramshot Grand | <<locked>> | 98% | 49,153 psi | 82% | 2717 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 84% | 36,506 psi | 61% | 2441 fps | 95.6% |
| Ramshot Magnum | <<locked>> | 98% | 42,496 psi | 71% | 2579 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 46% | 1506 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,815 psi | 71% | 2490 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,153 psi | 80% | 2661 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,899 psi | 65% | 2539 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,314 psi | 54% | 2362 fps | 95.8% |
| ReloadSwiss RS 70 | 46.3 gr | 82% | 34,316 psi | 57% | 2421 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 46,180 psi | 77% | 2513 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,479 psi | 66% | 2444 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 49,501 psi | 82% | 2628 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 42,728 psi | 71% | 2566 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 40,030 psi | 67% | 2428 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,492 psi | 61% | 2359 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,240 psi | 82% | 2585 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,411 psi | 74% | 2503 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,941 psi | 61% | 2388 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,553 psi | 67% | 2497 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,067 psi | 83% | 2605 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,892 psi | 80% | 2582 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,472 psi | 82% | 2500 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,510 psi | 69% | 2379 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,101 psi | 63% | 2356 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,324 psi | 75% | 2618 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 49,182 psi | 82% | 2503 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,661 psi | 83% | 2595 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,205 psi | 67% | 2451 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 29,588 psi | 49% | 2310 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 40,828 psi | 68% | 2503 fps | 95.3% |
| Unknown powder | <<locked>> | 80% | 35,636 psi | 59% | 2402 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 80% | 49,908 psi | 83% | 2487 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,006 psi | 76% | 2484 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,224 psi | 77% | 2497 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,159 psi | 63% | 2385 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,287 psi | 57% | 2352 fps | 96.7% |
| Vihtavuori N165 | <<locked>> | 98% | 42,641 psi | 71% | 2526 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 44,599 psi | 74% | 2490 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,707 psi | 56% | 2349 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 84% | 29,196 psi | 49% | 2303 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,678 psi | 56% | 2326 fps | 98.5% |
| Winchester 760 | <<locked>> | 80% | 37,985 psi | 63% | 2464 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,963 psi | 45% | 2306 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,541 psi | 74% | 2562 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 108 powders for 7 x 64 Brenneke loaded with the .284 | 160gr | Swift A-Frame. Alliant Reloder-26 delivers the highest muzzle velocity at 2,812 fps; across all powders the maximum-charge window runs from 1,647 fps to 2,812 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 60–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 7 x 64 Brenneke with the .284 | 160gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, 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.