Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 127gr | Hasler Hunting bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Alliant Power Pro 2000-MR.
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% | 54,230 psi | 90% | 2894 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 52,286 psi | 87% | 2910 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 51,880 psi | 86% | 2907 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,418 psi | 90% | 2976 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 51,764 psi | 86% | 2946 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,474 psi | 86% | 3015 fps | 98.6% |
| ADI AR 2206H | <<locked>> | 88% | 53,505 psi | 89% | 2986 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 94% | 54,447 psi | 90% | 2982 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 52,649 psi | 87% | 2940 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 52,910 psi | 88% | 2923 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,012 psi | 90% | 3048 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 52,910 psi | 88% | 3097 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,143 psi | 90% | 3005 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,751 psi | 89% | 2897 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 51,242 psi | 85% | 2969 fps | 99% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,198 psi | 83% | 3022 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 51,198 psi | 85% | 3064 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,520 psi | 59% | 2723 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,330 psi | 89% | 2995 fps | 98.9% |
| Bofors RP3 | <<locked>> | 92% | 50,981 psi | 85% | 2963 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 51,213 psi | 85% | 2874 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 86% | 51,517 psi | 86% | 2966 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,505 psi | 89% | 3064 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 82% | 53,200 psi | 88% | 2943 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,346 psi | 90% | 2966 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 52,199 psi | 87% | 2972 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 98% | 51,372 psi | 85% | 3012 fps | 96% |
| Hodgdon H4895 | <<locked>> | 88% | 54,027 psi | 90% | 2999 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,398 psi | 77% | 2897 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 53,011 psi | 88% | 3028 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,969 psi | 58% | 1837 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 51,909 psi | 86% | 2946 fps | 99.6% |
| IMR 3031 | <<locked>> | 88% | 53,635 psi | 89% | 2989 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,041 psi | 90% | 2969 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,273 psi | 90% | 2943 fps | 96.5% |
| IMR 4198 | <<locked>> | 82% | 54,360 psi | 90% | 2864 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,925 psi | 90% | 2966 fps | 96.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,023 psi | 81% | 2953 fps | 98.2% |
| IMR 4895 | <<locked>> | 90% | 52,533 psi | 87% | 3002 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 86% | 52,649 psi | 87% | 2940 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 52,185 psi | 87% | 2920 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 52,605 psi | 87% | 2959 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,432 psi | 89% | 2917 fps | 99.5% |
| Lovex S062 | <<locked>> | 92% | 53,519 psi | 89% | 2963 fps | 99.9% |
| Lovex S065 | <<locked>> | 98% | 52,620 psi | 87% | 2949 fps | 97.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,243 psi | 88% | 2979 fps | 96.6% |
| Norma 201 | <<locked>> | 88% | 51,895 psi | 86% | 2927 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 52,634 psi | 87% | 2940 fps | 100% |
| Norma 203B | <<locked>> | 92% | 53,838 psi | 89% | 3012 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 50,952 psi | 85% | 3002 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 90% | 50,923 psi | 85% | 2982 fps | 99.2% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,198 psi | 83% | 2995 fps | 96.7% |
| Ramshot TAC | <<locked>> | 86% | 52,924 psi | 88% | 2949 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 52,446 psi | 87% | 2972 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,766 psi | 89% | 2940 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,172 psi | 58% | 1877 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 52,083 psi | 87% | 2923 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 52,750 psi | 88% | 2953 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 51,372 psi | 85% | 3035 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 51,140 psi | 85% | 3074 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,358 psi | 85% | 3035 fps | 98.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,069 psi | 87% | 3068 fps | 98% |
| Rottweil R 901 | <<locked>> | 86% | 52,953 psi | 88% | 2917 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 52,446 psi | 87% | 2927 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 54,172 psi | 90% | 3005 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 98% | 52,620 psi | 87% | 2949 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 52,605 psi | 87% | 2959 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,519 psi | 89% | 2963 fps | 99.9% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,243 psi | 88% | 2979 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 52,910 psi | 88% | 3018 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 51,140 psi | 85% | 2923 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 51,866 psi | 86% | 2953 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,027 psi | 90% | 2881 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,838 psi | 89% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 53,316 psi | 89% | 2904 fps | 96.2% |
| Somchem S321 | <<locked>> | 84% | 53,838 psi | 89% | 2976 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 53,026 psi | 88% | 2874 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,433 psi | 90% | 2976 fps | 99.5% |
| Somchem S355 | <<locked>> | 94% | 51,358 psi | 85% | 2953 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,397 psi | 75% | 2949 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 84% | 53,577 psi | 89% | 2844 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,186 psi | 90% | 2867 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 51,924 psi | 86% | 2900 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 53,084 psi | 88% | 2913 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 52,808 psi | 88% | 2936 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,722 psi | 89% | 3005 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 86% | 53,055 psi | 88% | 2940 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 90% | 51,372 psi | 85% | 2910 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,750 psi | 88% | 3009 fps | 98.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,087 psi | 63% | 2802 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 51,184 psi | 85% | 2940 fps | 99.7% |
| Winchester 748 | <<locked>> | 86% | 52,794 psi | 88% | 2989 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 51,706 psi | 86% | 3015 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 51,459 psi | 85% | 2959 fps | 99.6% |
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% | 44,831 psi | 74% | 2749 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,921 psi | 81% | 2858 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,883 psi | 61% | 2644 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,106 psi | 73% | 2808 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 34,925 psi | 58% | 2628 fps | 99.3% |
| Accurate 4350 | <<locked>> | 92% | 38,624 psi | 64% | 2769 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 41,133 psi | 68% | 2756 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 37,333 psi | 62% | 2651 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,221 psi | 72% | 2772 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 42,917 psi | 71% | 2772 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,430 psi | 84% | 2986 fps | 99.5% |
| Alliant Power Pro 2000-MR | 46 gr | 80% | 37,405 psi | 62% | 2766 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,214 psi | 57% | 2612 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,575 psi | 84% | 2851 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,883 psi | 61% | 2677 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 92% | 39,015 psi | 65% | 2782 fps | 95.7% |
| Alliant Reloder-17 | 47.5 gr | 84% | 33,881 psi | 56% | 2680 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 33,257 psi | 55% | 2661 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,350 psi | 67% | 2753 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 33,591 psi | 56% | 2608 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,266 psi | 75% | 2769 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,945 psi | 70% | 2792 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,108 psi | 77% | 2933 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 80% | 49,676 psi | 83% | 2887 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,589 psi | 84% | 2907 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 39,856 psi | 66% | 2736 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 96% | 47,993 psi | 80% | 2949 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 41,466 psi | 69% | 2769 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,562 psi | 56% | 2618 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,594 psi | 62% | 2733 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,773 psi | 43% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,001 psi | 66% | 2720 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 40,944 psi | 68% | 2776 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,811 psi | 61% | 2635 fps | 95.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 50,879 psi | 85% | 2884 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 51,111 psi | 85% | 2815 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 50,546 psi | 84% | 2907 fps | 95.5% |
| IMR 4831 | <<locked>> | 92% | 37,405 psi | 62% | 2720 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 37,782 psi | 63% | 2710 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 80% | 43,221 psi | 72% | 2772 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 48,820 psi | 81% | 2864 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 39,987 psi | 66% | 2736 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 41,742 psi | 69% | 2703 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 36,506 psi | 61% | 2638 fps | 97.6% |
| Lovex S065 | <<locked>> | 92% | 43,526 psi | 72% | 2782 fps | 95.4% |
| Lovex S070 | <<locked>> | 96% | 46,934 psi | 78% | 2867 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 40,190 psi | 67% | 2710 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 40,451 psi | 67% | 2723 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 36,274 psi | 60% | 2664 fps | 96.2% |
| Norma URP | <<locked>> | 92% | 39,160 psi | 65% | 2772 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 35,998 psi | 60% | 2677 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 96% | 44,034 psi | 73% | 2877 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 43,236 psi | 72% | 2769 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,598 psi | 71% | 2792 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,065 psi | 78% | 2828 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,049 psi | 43% | 1680 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,762 psi | 81% | 2867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 46,296 psi | 77% | 2838 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,653 psi | 64% | 2782 fps | 96.3% |
| ReloadSwiss RS 60 | 45.3 gr | 80% | 31,633 psi | 53% | 2631 fps | 97.3% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,682 psi | 64% | 2789 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 42,105 psi | 70% | 2864 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 43,961 psi | 73% | 2762 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 38,232 psi | 64% | 2657 fps | 98% |
| Rottweil R 903 | <<locked>> | 80% | 31,589 psi | 52% | 2549 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,526 psi | 72% | 2782 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,987 psi | 66% | 2736 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 36,506 psi | 61% | 2638 fps | 97.6% |
| Shooters World SW4350 | <<locked>> | 96% | 46,934 psi | 78% | 2867 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 35,230 psi | 59% | 2664 fps | 95.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,336 psi | 69% | 2736 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,929 psi | 66% | 2726 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,887 psi | 70% | 2677 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,563 psi | 57% | 2533 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 49,719 psi | 83% | 2844 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 46,717 psi | 78% | 2854 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 41,365 psi | 69% | 2677 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,060 psi | 68% | 2736 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 32,619 psi | 54% | 2562 fps | 95.4% |
| Somchem S365 | <<locked>> | 88% | 30,458 psi | 51% | 2592 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 47,500 psi | 79% | 2753 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,177 psi | 70% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,507 psi | 62% | 2651 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,406 psi | 64% | 2661 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 31,038 psi | 52% | 2500 fps | 96.4% |
| Vihtavuori N160 | <<locked>> | 90% | 38,348 psi | 64% | 2717 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 43,294 psi | 72% | 2769 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 36,927 psi | 61% | 2641 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 40,350 psi | 67% | 2776 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 98% | 35,520 psi | 59% | 2740 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,939 psi | 56% | 2585 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 42,830 psi | 71% | 2815 fps | 99.5% |
| Winchester 760 | <<locked>> | 96% | 48,312 psi | 80% | 2956 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,146 psi | 65% | 2726 fps | 97.7% |
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 94 powders for 7 x 64 Brenneke loaded with the .284 | 127gr | Hasler Hunting. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,097 fps; across all powders the maximum-charge window runs from 1,837 fps to 3,097 fps. Accurate 4350 gives the best case fill at 100 %, and 94 of the 94 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 127.0 gr projectile in 0.284" calls for a 1:10.5 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. ReloadSwiss RS 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for 7 x 64 Brenneke with the .284 | 127gr | Hasler Hunting 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.