Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 170gr | Sierra RN Prohunter bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 and Hodgdon Superformance.
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>> | 82% | 52,823 psi | 88% | 2507 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,795 psi | 89% | 2566 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,720 psi | 84% | 2605 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 52,982 psi | 88% | 2556 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,200 psi | 88% | 2654 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,301 psi | 89% | 2585 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,172 psi | 90% | 2690 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 51,982 psi | 86% | 2684 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 52,083 psi | 87% | 2694 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,867 psi | 89% | 2605 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,215 psi | 90% | 2625 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,853 psi | 89% | 2700 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 51,329 psi | 85% | 2677 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,403 psi | 89% | 2680 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,546 psi | 84% | 2680 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,558 psi | 79% | 2621 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,640 psi | 69% | 2549 fps | 98.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,288 psi | 90% | 2802 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,282 psi | 77% | 2608 fps | 96.7% |
| Bofors RP3 | <<locked>> | 84% | 51,213 psi | 85% | 2575 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,546 psi | 84% | 2680 fps | 97.8% |
| Bofors RP7 | <<locked>> | 90% | 54,085 psi | 90% | 2605 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 84% | 51,706 psi | 86% | 2589 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 52,040 psi | 86% | 2651 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 88% | 51,967 psi | 86% | 2608 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,041 psi | 90% | 2628 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,765 psi | 88% | 2621 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 51,750 psi | 86% | 2684 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 60% | 1604 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,824 psi | 89% | 2589 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,953 psi | 88% | 2569 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 51,953 psi | 86% | 2549 fps | 98.9% |
| IMR 4350 | <<locked>> | 92% | 51,517 psi | 86% | 2589 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,634 psi | 87% | 2585 fps | 99% |
| IMR 4831 | <<locked>> | 94% | 53,534 psi | 89% | 2644 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 52,112 psi | 87% | 2602 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 53,824 psi | 89% | 2625 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 49,298 psi | 82% | 2654 fps | 95.9% |
| Lovex S060 | <<locked>> | 82% | 54,462 psi | 90% | 2552 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,084 psi | 88% | 2562 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,576 psi | 87% | 2582 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 53,388 psi | 89% | 2618 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,221 psi | 70% | 2467 fps | 98.2% |
| Norma 203B | <<locked>> | 84% | 53,505 psi | 89% | 2612 fps | 100% |
| Norma 204 | <<locked>> | 92% | 51,866 psi | 86% | 2635 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 53,403 psi | 89% | 2759 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 51,895 psi | 86% | 2638 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 53,925 psi | 90% | 2638 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 49,226 psi | 82% | 2661 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 94% | 54,186 psi | 90% | 2690 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 43,729 psi | 73% | 2546 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,854 psi | 61% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 51,634 psi | 86% | 2572 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 51,010 psi | 85% | 2671 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,721 psi | 88% | 2671 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 51,488 psi | 86% | 2697 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,466 psi | 67% | 2562 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 82% | 51,663 psi | 86% | 2526 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 51,401 psi | 85% | 2572 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 52,562 psi | 87% | 2612 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 98% | 52,533 psi | 87% | 2664 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 90% | 54,085 psi | 90% | 2605 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,576 psi | 87% | 2582 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 53,084 psi | 88% | 2562 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,388 psi | 89% | 2618 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,750 psi | 88% | 2628 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,824 psi | 89% | 2598 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,518 psi | 87% | 2467 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 52,040 psi | 86% | 2536 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 52,054 psi | 86% | 2661 fps | 98% |
| Somchem S355 | <<locked>> | 86% | 51,547 psi | 86% | 2569 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 54,215 psi | 90% | 2608 fps | 96.2% |
| Somchem S365 | <<locked>> | 96% | 54,259 psi | 90% | 2687 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,316 psi | 89% | 2648 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 51,866 psi | 86% | 2490 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 52,083 psi | 87% | 2507 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,460 psi | 87% | 2543 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,259 psi | 90% | 2635 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,081 psi | 82% | 2569 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 53,766 psi | 89% | 2549 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,403 psi | 89% | 2641 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,214 psi | 88% | 2690 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 53,896 psi | 90% | 2746 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,577 psi | 89% | 2605 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,040 psi | 86% | 2651 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,772 psi | 71% | 2671 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,954 psi | 90% | 2605 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,272 psi | 89% | 2638 fps | 97.9% |
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 2495 | <<locked>> | 80% | 49,371 psi | 82% | 2461 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,355 psi | 79% | 2464 fps | 97.6% |
| Accurate 3100 | <<locked>> | 88% | 33,736 psi | 56% | 2300 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 46,775 psi | 78% | 2467 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,215 psi | 59% | 2339 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 44,425 psi | 74% | 2444 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 41,800 psi | 69% | 2477 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 98% | 48,617 psi | 81% | 2625 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,414 psi | 80% | 2638 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,599 psi | 74% | 2464 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,616 psi | 79% | 2526 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,708 psi | 58% | 2352 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,972 psi | 65% | 2464 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,408 psi | 69% | 2474 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,379 psi | 69% | 2516 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,382 psi | 42% | 2129 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,430 psi | 54% | 2336 fps | 95.6% |
| Alliant Reloder-26 | 48.5 gr | 84% | 30,792 psi | 51% | 2339 fps | 95.9% |
| Bofors RP15 | <<locked>> | 96% | 40,814 psi | 68% | 2503 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 44,788 psi | 74% | 2477 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 41,379 psi | 69% | 2516 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 39,610 psi | 66% | 2356 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 45,339 psi | 75% | 2487 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 37,391 psi | 62% | 2388 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 80% | 40,350 psi | 67% | 2405 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,169 psi | 53% | 2254 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,429 psi | 82% | 2572 fps | 100% |
| Hodgdon Superformance | 48.8 gr | 82% | 38,914 psi | 65% | 2448 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 45% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,444 psi | 84% | 2539 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,731 psi | 78% | 2474 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,037 psi | 81% | 2500 fps | 98.5% |
| IMR 4350 | <<locked>> | 82% | 37,811 psi | 63% | 2343 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,046 psi | 68% | 2385 fps | 96.8% |
| IMR 4831 | <<locked>> | 80% | 34,156 psi | 57% | 2303 fps | 97.7% |
| IMR 4895 | <<locked>> | 80% | 48,849 psi | 81% | 2552 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 47,630 psi | 79% | 2526 fps | 95% |
| IMR 7828 SSC | <<locked>> | 98% | 46,079 psi | 77% | 2595 fps | 95% |
| Lovex S060 | <<locked>> | 80% | 51,445 psi | 85% | 2510 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,949 psi | 78% | 2474 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,653 psi | 64% | 2343 fps | 97.6% |
| Lovex S070 | <<locked>> | 80% | 36,912 psi | 61% | 2326 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 32,677 psi | 54% | 2274 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 46,992 psi | 78% | 2516 fps | 100% |
| Norma 204 | <<locked>> | 86% | 42,482 psi | 71% | 2474 fps | 95.4% |
| Norma MRP | <<locked>> | 90% | 37,971 psi | 63% | 2477 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 35,346 psi | 59% | 2343 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 80% | 47,094 psi | 78% | 2536 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 45,919 psi | 76% | 2602 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 34,113 psi | 57% | 2323 fps | 95.7% |
| Ramshot Magnum | <<locked>> | 98% | 40,770 psi | 68% | 2490 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,485 psi | 46% | 1463 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,455 psi | 76% | 2470 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,437 psi | 69% | 2516 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,969 psi | 58% | 2359 fps | 97.6% |
| ReloadSwiss RS 70 | 45.7 gr | 80% | 34,127 psi | 57% | 2359 fps | 96.8% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 37,695 psi | 63% | 2497 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 48,689 psi | 81% | 2484 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,322 psi | 70% | 2428 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 46,369 psi | 77% | 2513 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 90% | 40,292 psi | 67% | 2454 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 39,610 psi | 66% | 2356 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,653 psi | 64% | 2343 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 46,949 psi | 78% | 2474 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,912 psi | 61% | 2326 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,134 psi | 72% | 2474 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,502 psi | 84% | 2549 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,801 psi | 73% | 2346 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,753 psi | 63% | 2290 fps | 96% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 39,900 psi | 66% | 2448 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 42,641 psi | 71% | 2428 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 50,589 psi | 84% | 2552 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 31,749 psi | 53% | 2300 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 38,392 psi | 64% | 2388 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 48,791 psi | 81% | 2448 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,081 psi | 82% | 2464 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,756 psi | 68% | 2365 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,579 psi | 61% | 2336 fps | 98.1% |
| Vihtavuori N165 | <<locked>> | 94% | 40,393 psi | 67% | 2421 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 47,340 psi | 79% | 2461 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,187 psi | 60% | 2343 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 80% | 27,644 psi | 46% | 2198 fps | 95.8% |
| Vihtavuori N560 | <<locked>> | 96% | 47,210 psi | 78% | 2635 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,853 psi | 60% | 2313 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 37,391 psi | 62% | 2388 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,483 psi | 42% | 2208 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,604 psi | 84% | 2559 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 43,337 psi | 72% | 2480 fps | 95.8% |
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 88 powders for 7 x 64 Brenneke loaded with the .284 | 170gr | Sierra RN Prohunter. Alliant Reloder-26 delivers the highest muzzle velocity at 2,802 fps; across all powders the maximum-charge window runs from 1,604 fps to 2,802 fps. Accurate 3100 gives the best case fill at 100 %, and 88 of the 88 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 170.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, Alliant Reloder-26, Hodgdon Superformance rank at the top here: for 7 x 64 Brenneke with the .284 | 170gr | Sierra RN Prohunter 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.