Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 152gr | Barnes LRX BT 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 Reloder-17, ReloadSwiss RS 60 and Hodgdon H414.
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% | 54,389 psi | 90% | 2628 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 52,591 psi | 87% | 2648 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 51,213 psi | 85% | 2667 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,388 psi | 87% | 2651 fps | 96.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 40,161 psi | 67% | 2549 fps | 95.9% |
| Accurate 4064 | <<locked>> | 90% | 52,750 psi | 88% | 2694 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 52,518 psi | 87% | 2776 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 86% | 53,795 psi | 89% | 2730 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 51,677 psi | 86% | 2684 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 52,910 psi | 88% | 2684 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 53,606 psi | 89% | 2657 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 53,417 psi | 89% | 2844 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 51,503 psi | 86% | 2707 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 51,938 psi | 86% | 2723 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,230 psi | 90% | 2835 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 51,721 psi | 86% | 2815 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,609 psi | 64% | 2579 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,902 psi | 71% | 2730 fps | 98.1% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 53,606 psi | 89% | 2746 fps | 99.7% |
| Bofors RP3 | <<locked>> | 90% | 51,619 psi | 86% | 2717 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 52,185 psi | 87% | 2690 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 84% | 54,462 psi | 90% | 2664 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 51,822 psi | 86% | 2707 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 53,998 psi | 90% | 2805 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 52,736 psi | 88% | 2730 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 96% | 52,315 psi | 87% | 2776 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 94% | 53,026 psi | 88% | 2740 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 86% | 54,317 psi | 90% | 2740 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,473 psi | 84% | 2713 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 53,795 psi | 89% | 2772 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 52,823 psi | 88% | 2812 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,360 psi | 59% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 52,069 psi | 87% | 2690 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 54,201 psi | 90% | 2720 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 54,404 psi | 90% | 2717 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 54,230 psi | 90% | 2694 fps | 97.9% |
| IMR 4350 | <<locked>> | 98% | 52,446 psi | 87% | 2717 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,215 psi | 90% | 2723 fps | 97.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,330 psi | 89% | 2769 fps | 99.7% |
| IMR 4895 | <<locked>> | 88% | 53,272 psi | 89% | 2749 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 52,910 psi | 88% | 2684 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 53,243 psi | 88% | 2703 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 53,417 psi | 89% | 2661 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 54,085 psi | 90% | 2710 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 53,272 psi | 89% | 2713 fps | 98.9% |
| Lovex S070 | <<locked>> | 98% | 54,027 psi | 90% | 2746 fps | 98.2% |
| Norma 201 | <<locked>> | 86% | 52,199 psi | 87% | 2674 fps | 100% |
| Norma 202 | <<locked>> | 86% | 53,084 psi | 88% | 2680 fps | 100% |
| Norma 203B | <<locked>> | 90% | 54,462 psi | 90% | 2759 fps | 100% |
| Norma 204 | <<locked>> | 98% | 52,982 psi | 88% | 2762 fps | 96% |
| Norma URP | <<locked>> | 98% | 52,040 psi | 86% | 2769 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 88% | 51,561 psi | 86% | 2733 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,404 psi | 90% | 2818 fps | 98.8% |
| Ramshot TAC | <<locked>> | 84% | 53,026 psi | 88% | 2700 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 52,634 psi | 87% | 2720 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 53,766 psi | 89% | 2687 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,708 psi | 59% | 1696 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 53,026 psi | 88% | 2710 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 52,185 psi | 87% | 2785 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 51,750 psi | 86% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 52,489 psi | 87% | 2802 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 52,417 psi | 87% | 2831 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 84% | 53,388 psi | 89% | 2657 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 52,881 psi | 88% | 2674 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 51,503 psi | 86% | 2707 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 52,185 psi | 87% | 2690 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 53,272 psi | 89% | 2713 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 53,243 psi | 88% | 2703 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,085 psi | 90% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 54,027 psi | 90% | 2746 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 53,330 psi | 89% | 2769 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 51,358 psi | 85% | 2677 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 52,185 psi | 87% | 2703 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,983 psi | 90% | 2618 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 54,331 psi | 90% | 2618 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 53,316 psi | 89% | 2664 fps | 97.8% |
| Somchem S321 | <<locked>> | 82% | 53,766 psi | 89% | 2710 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 53,229 psi | 88% | 2615 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 50,981 psi | 85% | 2671 fps | 99.8% |
| Somchem S355 | <<locked>> | 92% | 51,996 psi | 86% | 2707 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,951 psi | 83% | 2769 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 46,325 psi | 77% | 2651 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 82% | 53,766 psi | 89% | 2582 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 54,273 psi | 90% | 2605 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 52,721 psi | 88% | 2641 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 53,534 psi | 89% | 2657 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 53,432 psi | 89% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 51,024 psi | 85% | 2713 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 84% | 53,069 psi | 88% | 2680 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 51,837 psi | 86% | 2657 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 53,505 psi | 89% | 2769 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,250 psi | 70% | 2651 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 51,285 psi | 85% | 2694 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 53,258 psi | 88% | 2730 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 52,649 psi | 87% | 2782 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,330 psi | 57% | 2575 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 86% | 51,822 psi | 86% | 2707 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 2015 | <<locked>> | 80% | 48,095 psi | 80% | 2539 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,379 psi | 67% | 2464 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,964 psi | 80% | 2618 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 45,890 psi | 76% | 2546 fps | 95.4% |
| Accurate 3100 | <<locked>> | 98% | 37,159 psi | 62% | 2487 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 38,232 psi | 64% | 2461 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 32,169 psi | 53% | 2392 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 44,483 psi | 74% | 2579 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 37,782 psi | 63% | 2434 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,644 psi | 77% | 2585 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 46,717 psi | 78% | 2566 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,393 psi | 67% | 2608 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,231 psi | 62% | 2451 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,147 psi | 67% | 2516 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,866 psi | 55% | 2408 fps | 95.3% |
| Alliant Reloder-17 | 42.3 gr | 80% | 31,995 psi | 53% | 2418 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,936 psi | 50% | 2365 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 34,737 psi | 58% | 2543 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,569 psi | 72% | 2579 fps | 98.5% |
| Bofors RP3 | <<locked>> | 80% | 36,738 psi | 61% | 2454 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 45,948 psi | 76% | 2585 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,124 psi | 80% | 2569 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,310 psi | 75% | 2605 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,256 psi | 83% | 2749 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 80% | 37,565 psi | 62% | 2454 fps | 96.4% |
| Hodgdon H414 | 46.6 gr | 90% | 42,728 psi | 71% | 2612 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 90% | 46,746 psi | 78% | 2635 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 44,889 psi | 75% | 2589 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,021 psi | 47% | 2257 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,959 psi | 68% | 2562 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 92% | 45,818 psi | 76% | 2690 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,281 psi | 44% | 1480 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,975 psi | 71% | 2539 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 44,541 psi | 74% | 2579 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,668 psi | 66% | 2467 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,250 psi | 70% | 2490 fps | 95.3% |
| IMR 4350 | <<locked>> | 92% | 43,381 psi | 72% | 2562 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 86% | 42,264 psi | 70% | 2516 fps | 95.2% |
| IMR 4831 | <<locked>> | 86% | 33,489 psi | 56% | 2405 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 41,133 psi | 68% | 2543 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 46,644 psi | 77% | 2585 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 43,453 psi | 72% | 2556 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,599 psi | 74% | 2520 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 39,494 psi | 66% | 2470 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 36,666 psi | 61% | 2411 fps | 95.1% |
| Lovex S070 | <<locked>> | 90% | 41,916 psi | 70% | 2539 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 43,366 psi | 72% | 2530 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 43,743 psi | 73% | 2536 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,523 psi | 66% | 2503 fps | 98.6% |
| Norma 204 | <<locked>> | 96% | 49,269 psi | 82% | 2700 fps | 95.1% |
| Norma URP | <<locked>> | 84% | 32,677 psi | 54% | 2398 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 39,059 psi | 65% | 2516 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 39,088 psi | 65% | 2546 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 46,340 psi | 77% | 2592 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,876 psi | 76% | 2608 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,256 psi | 83% | 2635 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,672 psi | 44% | 1519 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,712 psi | 68% | 2493 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,322 psi | 70% | 2615 fps | 98.7% |
| ReloadSwiss RS 60 | 42.3 gr | 80% | 34,142 psi | 57% | 2484 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,447 psi | 57% | 2467 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 37,072 psi | 62% | 2530 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 47,007 psi | 78% | 2562 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,176 psi | 68% | 2484 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 34,447 psi | 57% | 2398 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 45,948 psi | 76% | 2585 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,666 psi | 61% | 2411 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,453 psi | 72% | 2556 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,494 psi | 66% | 2470 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 41,916 psi | 70% | 2539 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,708 psi | 59% | 2451 fps | 97.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,585 psi | 74% | 2566 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,989 psi | 71% | 2549 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,947 psi | 75% | 2484 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,333 psi | 62% | 2359 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 41,046 psi | 68% | 2461 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 50,212 psi | 83% | 2657 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,425 psi | 74% | 2487 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,338 psi | 74% | 2562 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 35,491 psi | 59% | 2408 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 25,469 psi | 42% | 2234 fps | 95.4% |
| Somchem S385 | <<locked>> | 98% | 43,395 psi | 72% | 2598 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 50,778 psi | 84% | 2539 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,339 psi | 75% | 2477 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,886 psi | 68% | 2467 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,365 psi | 69% | 2474 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,649 psi | 56% | 2346 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 34,272 psi | 57% | 2402 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 46,615 psi | 77% | 2582 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 39,726 psi | 66% | 2464 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 33,634 psi | 56% | 2402 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 92% | 32,140 psi | 53% | 2434 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,820 psi | 50% | 2274 fps | 96.2% |
| Winchester 748 | <<locked>> | 80% | 46,485 psi | 77% | 2628 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 42,728 psi | 71% | 2612 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,210 psi | 47% | 2382 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,496 psi | 71% | 2552 fps | 99.4% |
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 97 powders for 7 x 64 Brenneke loaded with the .284 | 152gr | Barnes LRX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,660 fps to 2,844 fps. Accurate 3100 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 57–90 %, leaving at least 10 % headroom. The 152.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, 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 Reloder-17, ReloadSwiss RS 60, Hodgdon H414 rank at the top here: for 7 x 64 Brenneke with the .284 | 152gr | Barnes LRX BT 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.