Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 135gr | CutEdge ER Raptor bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 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 2015 | <<locked>> | 86% | 53,345 psi | 89% | 2779 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 51,764 psi | 86% | 2802 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 51,097 psi | 85% | 2795 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,563 psi | 89% | 2861 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 51,111 psi | 85% | 2838 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,357 psi | 84% | 2897 fps | 98.6% |
| ADI AR 2206H | <<locked>> | 88% | 52,837 psi | 88% | 2874 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 94% | 53,766 psi | 89% | 2867 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 51,779 psi | 86% | 2825 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 51,982 psi | 86% | 2808 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,388 psi | 89% | 2930 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 51,953 psi | 86% | 2976 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,156 psi | 88% | 2890 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,403 psi | 89% | 2785 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,027 psi | 90% | 2913 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,414 psi | 82% | 2907 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,056 psi | 90% | 3009 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,708 psi | 58% | 2615 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 52,272 psi | 87% | 2881 fps | 98.9% |
| Bofors RP3 | <<locked>> | 94% | 53,476 psi | 89% | 2900 fps | 99.9% |
| Bofors RP7 | <<locked>> | 98% | 54,172 psi | 90% | 2864 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,012 psi | 90% | 2815 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,462 psi | 90% | 2907 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 52,678 psi | 88% | 2949 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 82% | 52,591 psi | 87% | 2828 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,592 psi | 89% | 2851 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 51,372 psi | 85% | 2858 fps | 98.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,201 psi | 90% | 2956 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 88% | 53,316 psi | 89% | 2884 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,542 psi | 76% | 2785 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 52,141 psi | 87% | 2910 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,882 psi | 58% | 1755 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 51,227 psi | 85% | 2835 fps | 99.6% |
| IMR 3031 | <<locked>> | 88% | 52,533 psi | 87% | 2867 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 53,156 psi | 88% | 2851 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,592 psi | 89% | 2828 fps | 96.6% |
| IMR 4198 | <<locked>> | 82% | 53,650 psi | 89% | 2746 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 52,953 psi | 88% | 2848 fps | 96.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,022 psi | 80% | 2838 fps | 98.3% |
| IMR 4895 | <<locked>> | 90% | 51,996 psi | 86% | 2890 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 86% | 51,779 psi | 86% | 2825 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 51,474 psi | 86% | 2805 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 51,735 psi | 86% | 2844 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 52,620 psi | 87% | 2802 fps | 99.5% |
| Lovex S062 | <<locked>> | 92% | 52,634 psi | 87% | 2848 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 51,692 psi | 86% | 2835 fps | 97.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,518 psi | 87% | 2867 fps | 96.7% |
| Norma 201 | <<locked>> | 88% | 51,358 psi | 85% | 2818 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 51,750 psi | 86% | 2822 fps | 100% |
| Norma 203B | <<locked>> | 92% | 53,156 psi | 88% | 2900 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 50,183 psi | 83% | 2894 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 92% | 53,548 psi | 89% | 2920 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,255 psi | 82% | 2881 fps | 96.7% |
| Ramshot TAC | <<locked>> | 86% | 52,402 psi | 87% | 2841 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 51,488 psi | 86% | 2858 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 84% | 52,939 psi | 88% | 2825 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,114 psi | 58% | 1795 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 51,343 psi | 85% | 2808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 52,112 psi | 87% | 2844 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,346 psi | 90% | 2979 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,809 psi | 89% | 3012 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,401 psi | 84% | 2923 fps | 98.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,778 psi | 84% | 2943 fps | 98% |
| Rottweil R 901 | <<locked>> | 86% | 52,301 psi | 87% | 2805 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 51,605 psi | 86% | 2812 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 53,330 psi | 89% | 2890 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 54,172 psi | 90% | 2864 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 51,692 psi | 86% | 2835 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 51,735 psi | 86% | 2844 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 52,634 psi | 87% | 2848 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,518 psi | 87% | 2867 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 52,011 psi | 86% | 2904 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,143 psi | 90% | 2808 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,882 psi | 90% | 2867 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 51,140 psi | 85% | 2838 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,229 psi | 88% | 2766 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,200 psi | 88% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 52,170 psi | 87% | 2789 fps | 96.3% |
| Somchem S321 | <<locked>> | 84% | 53,026 psi | 88% | 2861 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 52,489 psi | 87% | 2762 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,345 psi | 89% | 2861 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 54,012 psi | 90% | 2894 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,744 psi | 74% | 2841 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 84% | 53,084 psi | 88% | 2733 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,403 psi | 89% | 2753 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,360 psi | 90% | 2831 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 52,489 psi | 87% | 2805 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 52,069 psi | 87% | 2825 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,707 psi | 88% | 2890 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 86% | 52,243 psi | 87% | 2825 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 53,983 psi | 90% | 2848 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,619 psi | 86% | 2894 fps | 98.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,101 psi | 62% | 2690 fps | 96.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,780 psi | 89% | 2881 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 51,909 psi | 86% | 2874 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,201 psi | 90% | 2956 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,172 psi | 90% | 2900 fps | 99.9% |
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% | 44,135 psi | 73% | 2638 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,182 psi | 80% | 2746 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,303 psi | 60% | 2543 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,424 psi | 72% | 2700 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 34,345 psi | 57% | 2526 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 37,971 psi | 63% | 2664 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 40,741 psi | 68% | 2651 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 34,621 psi | 58% | 2497 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,830 psi | 71% | 2667 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 42,511 psi | 71% | 2667 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,922 psi | 83% | 2874 fps | 99.6% |
| Alliant Power Pro 2000-MR | 43.2 gr | 80% | 36,695 psi | 61% | 2657 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,765 psi | 56% | 2513 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,995 psi | 83% | 2740 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,506 psi | 61% | 2579 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 92% | 38,609 psi | 64% | 2684 fps | 95.9% |
| Alliant Reloder-17 | 44.7 gr | 84% | 33,359 psi | 55% | 2582 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,590 psi | 54% | 2559 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,856 psi | 66% | 2651 fps | 96.4% |
| Bofors RP3 | <<locked>> | 80% | 33,011 psi | 55% | 2510 fps | 96.6% |
| Bofors RP7 | <<locked>> | 96% | 50,850 psi | 84% | 2812 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,831 psi | 74% | 2664 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,089 psi | 68% | 2680 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,643 psi | 76% | 2828 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 80% | 48,907 psi | 81% | 2772 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,009 psi | 83% | 2799 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 39,102 psi | 65% | 2628 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 96% | 47,297 psi | 79% | 2838 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 41,060 psi | 68% | 2664 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,996 psi | 55% | 2516 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,956 psi | 61% | 2628 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,904 psi | 43% | 1568 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,653 psi | 66% | 2618 fps | 97.9% |
| IMR 3031 | <<locked>> | 80% | 40,263 psi | 67% | 2664 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,303 psi | 60% | 2533 fps | 96% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,326 psi | 79% | 2720 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 50,589 psi | 84% | 2703 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,763 psi | 83% | 2795 fps | 95.6% |
| IMR 4831 | <<locked>> | 92% | 36,767 psi | 61% | 2618 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 37,376 psi | 62% | 2612 fps | 97% |
| IMR 8208 XBR | <<locked>> | 80% | 42,830 psi | 71% | 2667 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 47,950 psi | 80% | 2749 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 39,204 psi | 65% | 2628 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 41,234 psi | 69% | 2598 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 35,998 psi | 60% | 2536 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 43,062 psi | 72% | 2680 fps | 95.6% |
| Lovex S070 | <<locked>> | 96% | 46,253 psi | 77% | 2759 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 39,697 psi | 66% | 2605 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 39,972 psi | 66% | 2618 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 35,897 psi | 60% | 2566 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 38,522 psi | 64% | 2671 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 35,273 psi | 59% | 2572 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 96% | 43,163 psi | 72% | 2766 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 42,859 psi | 71% | 2664 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,090 psi | 70% | 2687 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,282 psi | 77% | 2713 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,962 psi | 43% | 1604 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,182 psi | 80% | 2756 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 45,397 psi | 75% | 2723 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,898 psi | 63% | 2674 fps | 96.4% |
| ReloadSwiss RS 60 | 42.6 gr | 80% | 31,154 psi | 52% | 2533 fps | 97.4% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,884 psi | 63% | 2680 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,379 psi | 69% | 2756 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 43,555 psi | 72% | 2657 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,666 psi | 63% | 2552 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 31,183 psi | 52% | 2457 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 96% | 50,850 psi | 84% | 2812 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,062 psi | 72% | 2680 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,204 psi | 65% | 2628 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 35,998 psi | 60% | 2536 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 96% | 46,253 psi | 77% | 2759 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,679 psi | 58% | 2566 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,024 psi | 85% | 2762 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,596 psi | 67% | 2628 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,247 psi | 65% | 2618 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,466 psi | 69% | 2572 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,171 psi | 57% | 2434 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 48,849 psi | 81% | 2736 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 46,180 psi | 77% | 2746 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 40,872 psi | 68% | 2572 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,596 psi | 67% | 2638 fps | 97.6% |
| Somchem S355 | <<locked>> | 80% | 32,155 psi | 53% | 2464 fps | 95.6% |
| Somchem S365 | <<locked>> | 86% | 28,065 psi | 47% | 2438 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 47,007 psi | 78% | 2644 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,742 psi | 69% | 2572 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,043 psi | 62% | 2549 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,985 psi | 63% | 2559 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,661 psi | 51% | 2408 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 90% | 37,913 psi | 63% | 2618 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 42,699 psi | 71% | 2661 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 36,463 psi | 61% | 2539 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 39,639 psi | 66% | 2674 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 98% | 34,954 psi | 58% | 2641 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,328 psi | 52% | 2431 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 42,163 psi | 70% | 2707 fps | 99.5% |
| Winchester 760 | <<locked>> | 96% | 47,297 psi | 79% | 2838 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,551 psi | 64% | 2621 fps | 97.8% |
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 97 powders for 7 x 64 Brenneke loaded with the .284 | 135gr | CutEdge ER Raptor. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,755 fps to 3,012 fps. Accurate 4350 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7 x 64 Brenneke with the .284 | 135gr | CutEdge ER Raptor 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.