Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 136gr | Peregrine VLR5 (VLR-5) 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 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>> | 84% | 52,199 psi | 87% | 2762 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,824 psi | 89% | 2831 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,301 psi | 89% | 2822 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,257 psi | 87% | 2844 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,650 psi | 89% | 2818 fps | 96.1% |
| Accurate 4064 | <<locked>> | 92% | 53,287 psi | 89% | 2867 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,330 psi | 89% | 2946 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 86% | 51,213 psi | 85% | 2851 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 92% | 52,562 psi | 87% | 2854 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,722 psi | 89% | 2858 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,462 psi | 90% | 2841 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,360 psi | 90% | 3022 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 52,083 psi | 87% | 2874 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 52,605 psi | 87% | 2894 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,576 psi | 86% | 2949 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 52,852 psi | 88% | 2995 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,347 psi | 60% | 2664 fps | 97.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,495 psi | 67% | 2815 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 51,111 psi | 85% | 2864 fps | 99% |
| Bofors RP3 | <<locked>> | 92% | 52,301 psi | 87% | 2887 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 53,055 psi | 88% | 2854 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 52,359 psi | 87% | 2795 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 52,968 psi | 88% | 2887 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 51,097 psi | 85% | 2923 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 92% | 53,476 psi | 89% | 2897 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 98% | 53,055 psi | 88% | 2943 fps | 97% |
| Hodgdon H4895 | <<locked>> | 86% | 51,706 psi | 86% | 2861 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,790 psi | 79% | 2828 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,404 psi | 90% | 2946 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,940 psi | 90% | 2976 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,099 psi | 58% | 1768 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,084 psi | 88% | 2867 fps | 99.9% |
| IMR 3031 | <<locked>> | 86% | 51,474 psi | 86% | 2851 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 52,069 psi | 87% | 2838 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 88% | 51,982 psi | 86% | 2808 fps | 96.6% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,084 psi | 88% | 2874 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 51,909 psi | 86% | 2835 fps | 96.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,343 psi | 84% | 2881 fps | 98.9% |
| IMR 4895 | <<locked>> | 90% | 53,940 psi | 90% | 2923 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 53,722 psi | 89% | 2858 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,809 psi | 89% | 2841 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,143 psi | 90% | 2881 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,447 psi | 90% | 2835 fps | 99.8% |
| Lovex S062 | <<locked>> | 90% | 51,648 psi | 86% | 2835 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 53,911 psi | 90% | 2877 fps | 98.2% |
| Lovex S070 | <<locked>> | 98% | 51,532 psi | 86% | 2858 fps | 96.8% |
| Norma 201 | <<locked>> | 88% | 53,330 psi | 89% | 2851 fps | 100% |
| Norma 202 | <<locked>> | 88% | 53,795 psi | 89% | 2854 fps | 100% |
| Norma 203B | <<locked>> | 90% | 51,779 psi | 86% | 2881 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 52,576 psi | 87% | 2933 fps | 99% |
| Ramshot Big Game | <<locked>> | 90% | 52,315 psi | 87% | 2904 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,576 psi | 86% | 2927 fps | 97.5% |
| Ramshot TAC | <<locked>> | 86% | 54,346 psi | 90% | 2877 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,577 psi | 89% | 2894 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 82% | 51,256 psi | 85% | 2805 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 59% | 1808 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,388 psi | 89% | 2841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,012 psi | 90% | 2877 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 52,953 psi | 88% | 2959 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 52,707 psi | 88% | 2999 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,098 psi | 88% | 2966 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,287 psi | 89% | 2995 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 86% | 54,172 psi | 90% | 2835 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,606 psi | 89% | 2848 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 52,170 psi | 87% | 2877 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 53,055 psi | 88% | 2854 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,911 psi | 90% | 2877 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,143 psi | 90% | 2881 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 51,648 psi | 86% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 51,532 psi | 86% | 2858 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,070 psi | 90% | 2940 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 52,272 psi | 87% | 2848 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,185 psi | 88% | 2877 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 51,866 psi | 86% | 2749 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 52,083 psi | 87% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 51,024 psi | 85% | 2776 fps | 96.4% |
| Somchem S321 | <<locked>> | 82% | 51,343 psi | 85% | 2835 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,375 psi | 90% | 2792 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 52,127 psi | 87% | 2844 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 52,852 psi | 88% | 2877 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,949 psi | 78% | 2881 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 51,677 psi | 86% | 2713 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 52,156 psi | 87% | 2736 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,447 psi | 89% | 2818 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,433 psi | 90% | 2831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,157 psi | 90% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 51,677 psi | 86% | 2877 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 86% | 54,244 psi | 90% | 2858 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 52,736 psi | 88% | 2831 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,172 psi | 90% | 2936 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,494 psi | 66% | 2746 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 52,562 psi | 87% | 2864 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 54,259 psi | 90% | 2910 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 53,055 psi | 88% | 2943 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 88% | 52,953 psi | 88% | 2884 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% | 46,006 psi | 76% | 2671 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,256 psi | 83% | 2779 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,159 psi | 63% | 2575 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,440 psi | 75% | 2736 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,183 psi | 83% | 2766 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 36,114 psi | 60% | 2566 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 37,173 psi | 62% | 2648 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 42,351 psi | 70% | 2687 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 80% | 36,085 psi | 60% | 2536 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,483 psi | 74% | 2700 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 44,295 psi | 74% | 2694 fps | 100% |
| Alliant Power Pro 2000-MR | 44.7 gr | 80% | 38,290 psi | 64% | 2703 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,317 psi | 59% | 2552 fps | 97.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,058 psi | 63% | 2615 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,433 psi | 59% | 2612 fps | 95.1% |
| Alliant Reloder-17 | 45.1 gr | 82% | 32,474 psi | 54% | 2562 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,184 psi | 53% | 2552 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,753 psi | 63% | 2746 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,568 psi | 69% | 2687 fps | 97.2% |
| Bofors RP3 | <<locked>> | 80% | 34,592 psi | 57% | 2546 fps | 97.4% |
| Bofors RP7 | <<locked>> | 94% | 49,617 psi | 82% | 2795 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,427 psi | 77% | 2697 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,946 psi | 71% | 2717 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,659 psi | 79% | 2864 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 82% | 38,319 psi | 64% | 2612 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 94% | 46,209 psi | 77% | 2822 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 42,714 psi | 71% | 2700 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 32,314 psi | 54% | 2503 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,754 psi | 64% | 2667 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 96% | 50,285 psi | 84% | 2913 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 43% | 1575 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,220 psi | 68% | 2654 fps | 98.5% |
| IMR 3031 | <<locked>> | 80% | 42,221 psi | 70% | 2700 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,826 psi | 63% | 2569 fps | 96.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,832 psi | 76% | 2700 fps | 95.1% |
| IMR 4350 | <<locked>> | 98% | 49,951 psi | 83% | 2822 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,759 psi | 76% | 2726 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 36,013 psi | 60% | 2602 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 38,986 psi | 65% | 2648 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 80% | 44,483 psi | 74% | 2700 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 49,937 psi | 83% | 2785 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,176 psi | 68% | 2667 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 42,757 psi | 71% | 2631 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 37,565 psi | 62% | 2572 fps | 98.4% |
| Lovex S065 | <<locked>> | 90% | 42,032 psi | 70% | 2664 fps | 95.7% |
| Lovex S070 | <<locked>> | 94% | 45,281 psi | 75% | 2746 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 41,350 psi | 69% | 2641 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 41,655 psi | 69% | 2654 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,449 psi | 62% | 2605 fps | 97.2% |
| Norma URP | <<locked>> | 90% | 37,666 psi | 63% | 2651 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 36,898 psi | 61% | 2615 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 94% | 42,134 psi | 70% | 2749 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 44,454 psi | 74% | 2703 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,845 psi | 73% | 2723 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,008 psi | 80% | 2749 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,208 psi | 44% | 1614 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,864 psi | 83% | 2785 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,512 psi | 74% | 2713 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,900 psi | 66% | 2720 fps | 97.3% |
| ReloadSwiss RS 60 | 44 gr | 80% | 32,372 psi | 54% | 2572 fps | 98.3% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,217 psi | 62% | 2667 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,292 psi | 67% | 2740 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 45,078 psi | 75% | 2687 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,305 psi | 65% | 2592 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 32,518 psi | 54% | 2490 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 94% | 49,617 psi | 82% | 2795 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,032 psi | 70% | 2664 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,176 psi | 68% | 2667 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 37,565 psi | 62% | 2572 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 94% | 45,281 psi | 75% | 2746 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,881 psi | 56% | 2546 fps | 95.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,308 psi | 70% | 2667 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,973 psi | 68% | 2657 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,873 psi | 71% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,476 psi | 59% | 2464 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,529 psi | 79% | 2717 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 48,051 psi | 80% | 2782 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,453 psi | 71% | 2605 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,322 psi | 70% | 2674 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 33,663 psi | 56% | 2503 fps | 96.5% |
| Somchem S365 | <<locked>> | 84% | 27,630 psi | 46% | 2428 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 48,573 psi | 81% | 2671 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,207 psi | 72% | 2598 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,609 psi | 64% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,334 psi | 65% | 2585 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,850 psi | 53% | 2441 fps | 97.4% |
| Vihtavuori N160 | <<locked>> | 88% | 37,086 psi | 62% | 2602 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 44,324 psi | 74% | 2694 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 37,913 psi | 63% | 2572 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 36,347 psi | 60% | 2598 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 34,418 psi | 57% | 2628 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,414 psi | 51% | 2411 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 44,106 psi | 73% | 2743 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 46,485 psi | 77% | 2828 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,306 psi | 67% | 2657 fps | 98.4% |
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 95 powders for 7 x 64 Brenneke loaded with the .284 | 136gr | Peregrine VLR5 (VLR-5). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,022 fps; across all powders the maximum-charge window runs from 1,768 fps to 3,022 fps. Accurate 4350 gives the best case fill at 100 %, and 95 of the 95 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 136.0 gr projectile in 0.284" calls for a 1:9.5 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 | 136gr | Peregrine VLR5 (VLR-5) 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.