Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 145gr | Speer Boat-Tail bullet and 95 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% | 54,070 psi | 90% | 2746 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 52,750 psi | 88% | 2746 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,498 psi | 74% | 2703 fps | 97.1% |
| Accurate 4064 | <<locked>> | 88% | 54,259 psi | 90% | 2795 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 53,983 psi | 90% | 2881 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 54,012 psi | 90% | 2825 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 51,851 psi | 86% | 2776 fps | 99.7% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,112 psi | 87% | 2854 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 82% | 52,924 psi | 88% | 2772 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,969 psi | 90% | 2746 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,751 psi | 89% | 2943 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 51,967 psi | 86% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 52,388 psi | 87% | 2815 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 51,895 psi | 86% | 2887 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,649 psi | 87% | 2917 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,068 psi | 85% | 2844 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,163 psi | 70% | 2733 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,718 psi | 79% | 2907 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,693 psi | 89% | 2838 fps | 99.7% |
| Bofors RP3 | <<locked>> | 88% | 52,692 psi | 88% | 2815 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 52,605 psi | 87% | 2785 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,462 psi | 90% | 2756 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 52,533 psi | 87% | 2802 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,403 psi | 89% | 2825 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 94% | 53,229 psi | 88% | 2877 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 92% | 53,708 psi | 89% | 2841 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 82% | 51,285 psi | 85% | 2779 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 51,692 psi | 86% | 2815 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,157 psi | 90% | 2864 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,534 psi | 89% | 2913 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,853 psi | 60% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 52,460 psi | 87% | 2785 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 51,459 psi | 85% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 51,256 psi | 85% | 2756 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,360 psi | 90% | 2789 fps | 98.1% |
| IMR 4350 | <<locked>> | 96% | 53,127 psi | 88% | 2815 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,244 psi | 90% | 2815 fps | 98% |
| IMR 4831 | <<locked>> | 96% | 51,213 psi | 85% | 2822 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 53,737 psi | 89% | 2844 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 52,924 psi | 88% | 2772 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,925 psi | 90% | 2799 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,577 psi | 89% | 2753 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 51,242 psi | 85% | 2753 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,911 psi | 90% | 2812 fps | 99% |
| Lovex S070 | <<locked>> | 94% | 51,677 psi | 86% | 2795 fps | 97.9% |
| Norma 201 | <<locked>> | 84% | 52,881 psi | 88% | 2769 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,548 psi | 89% | 2772 fps | 100% |
| Norma 203B | <<locked>> | 86% | 51,648 psi | 86% | 2802 fps | 99.9% |
| Norma 204 | <<locked>> | 96% | 53,563 psi | 89% | 2861 fps | 96.2% |
| Norma MRPᴾ | <<locked>> | 100% | 47,239 psi | 78% | 2854 fps | 96.7% |
| Norma URP | <<locked>> | 96% | 53,214 psi | 88% | 2871 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 86% | 52,040 psi | 86% | 2828 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 51,982 psi | 86% | 2867 fps | 98.6% |
| Ramshot TAC | <<locked>> | 82% | 53,200 psi | 88% | 2792 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 82% | 52,794 psi | 88% | 2808 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,245 psi | 60% | 1781 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,592 psi | 89% | 2808 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,750 psi | 88% | 2877 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 52,547 psi | 87% | 2920 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 53,882 psi | 90% | 2907 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,055 psi | 88% | 2930 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 82% | 54,012 psi | 90% | 2753 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,374 psi | 89% | 2769 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 52,576 psi | 87% | 2805 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,893 psi | 83% | 2825 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 92% | 52,605 psi | 87% | 2785 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,911 psi | 90% | 2812 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,925 psi | 90% | 2799 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 51,242 psi | 85% | 2753 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 51,677 psi | 86% | 2795 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,273 psi | 90% | 2867 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 51,619 psi | 86% | 2769 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 52,446 psi | 87% | 2792 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,172 psi | 90% | 2707 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,447 psi | 90% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,157 psi | 90% | 2766 fps | 98% |
| Somchem S335 | <<locked>> | 84% | 53,664 psi | 89% | 2707 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 51,430 psi | 85% | 2762 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 52,982 psi | 88% | 2805 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 51,474 psi | 86% | 2874 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,662 psi | 84% | 2805 fps | 96.9% |
| Vihtavuori N133 | <<locked>> | 82% | 51,416 psi | 85% | 2651 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,243 psi | 88% | 2733 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,954 psi | 90% | 2749 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,143 psi | 90% | 2782 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 51,866 psi | 86% | 2812 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 82% | 53,316 psi | 89% | 2772 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 52,301 psi | 87% | 2749 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 51,227 psi | 85% | 2818 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,992 psi | 78% | 2812 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 51,953 psi | 86% | 2792 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,403 psi | 89% | 2818 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,229 psi | 88% | 2877 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,840 psi | 63% | 2746 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 84% | 52,272 psi | 87% | 2799 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% | 44,628 psi | 74% | 2608 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,282 psi | 77% | 2638 fps | 95.6% |
| Accurate 3100 | <<locked>> | 96% | 38,798 psi | 64% | 2592 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 42,221 psi | 70% | 2608 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 33,344 psi | 55% | 2487 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 47,645 psi | 79% | 2720 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 40,509 psi | 67% | 2569 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 98% | 49,110 psi | 82% | 2802 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,719 psi | 83% | 2723 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,778 psi | 84% | 2703 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,714 psi | 73% | 2759 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,451 psi | 67% | 2592 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,308 psi | 72% | 2657 fps | 98.9% |
| Alliant Reloder-16 | 44 gr | 82% | 33,373 psi | 55% | 2497 fps | 95.6% |
| Alliant Reloder-17 | 46.3 gr | 80% | 35,070 psi | 58% | 2569 fps | 98% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,921 psi | 80% | 2785 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,153 psi | 48% | 2408 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,795 psi | 59% | 2644 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,166 psi | 78% | 2726 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 40,306 psi | 67% | 2598 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 43,497 psi | 72% | 2621 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,198 psi | 85% | 2707 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,023 psi | 81% | 2749 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,046 psi | 68% | 2605 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 86% | 40,886 psi | 68% | 2651 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 88% | 47,384 psi | 79% | 2733 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 48,167 psi | 80% | 2730 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,921 psi | 48% | 2349 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,425 psi | 74% | 2707 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 43,149 psi | 72% | 2723 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,774 psi | 44% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,238 psi | 77% | 2680 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 48,153 psi | 80% | 2717 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,540 psi | 71% | 2602 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,904 psi | 75% | 2621 fps | 96.1% |
| IMR 4350 | <<locked>> | 90% | 44,019 psi | 73% | 2654 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,598 psi | 71% | 2605 fps | 95.4% |
| IMR 4831 | <<locked>> | 82% | 32,314 psi | 54% | 2444 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 44,411 psi | 74% | 2687 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 49,719 psi | 83% | 2723 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,369 psi | 79% | 2700 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,311 psi | 79% | 2651 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 42,598 psi | 71% | 2605 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 37,260 psi | 62% | 2497 fps | 95.4% |
| Lovex S070 | <<locked>> | 86% | 40,205 psi | 67% | 2582 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 46,862 psi | 78% | 2671 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,152 psi | 78% | 2674 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,699 psi | 71% | 2644 fps | 99.2% |
| Norma 204 | <<locked>> | 94% | 49,835 psi | 83% | 2799 fps | 95.4% |
| Norma MRP | <<locked>> | 98% | 44,251 psi | 74% | 2795 fps | 95.8% |
| Norma URP | <<locked>> | 82% | 33,547 psi | 56% | 2487 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 42,467 psi | 71% | 2661 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 39,856 psi | 66% | 2638 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 49,777 psi | 83% | 2736 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,342 psi | 82% | 2753 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 45% | 1594 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,307 psi | 69% | 2585 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,195 psi | 77% | 2766 fps | 99.3% |
| ReloadSwiss RS 60 | 46.3 gr | 80% | 37,318 psi | 62% | 2635 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,127 psi | 55% | 2503 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 37,666 psi | 63% | 2621 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 50,763 psi | 84% | 2703 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,425 psi | 74% | 2621 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,840 psi | 63% | 2543 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 98% | 46,688 psi | 78% | 2769 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 86% | 43,497 psi | 72% | 2621 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,260 psi | 62% | 2497 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,369 psi | 79% | 2700 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,598 psi | 71% | 2605 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 40,205 psi | 67% | 2582 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,957 psi | 65% | 2595 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,153 psi | 80% | 2710 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,282 psi | 77% | 2690 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,834 psi | 79% | 2615 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,030 psi | 67% | 2484 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,611 psi | 69% | 2549 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 47,659 psi | 79% | 2618 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,022 psi | 80% | 2707 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 38,696 psi | 64% | 2549 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 28,253 psi | 47% | 2385 fps | 96.9% |
| Somchem S385 | <<locked>> | 96% | 44,512 psi | 74% | 2700 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 48,254 psi | 80% | 2605 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,150 psi | 73% | 2598 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,556 psi | 74% | 2605 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,680 psi | 61% | 2480 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 32,779 psi | 54% | 2434 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 50,024 psi | 83% | 2720 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,105 psi | 72% | 2602 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 34,548 psi | 57% | 2490 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 88% | 31,575 psi | 52% | 2487 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,532 psi | 54% | 2415 fps | 97.4% |
| Winchester 748 | <<locked>> | 80% | 50,111 psi | 83% | 2769 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,886 psi | 68% | 2651 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 92% | 29,269 psi | 49% | 2490 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,818 psi | 76% | 2694 fps | 99.8% |
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 | 145gr | Speer Boat-Tail. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,943 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,943 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 60–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:12.0 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. Alliant Reloder-17, ReloadSwiss RS 60, Alliant Reloder-16 rank at the top here: for 7 x 64 Brenneke with the .284 | 145gr | Speer Boat-Tail they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Alliant Reloder-22 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.