Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 168gr | Peregrine Glider GRM bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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.
A valid access license is required to use the Personalized Load Calculator.
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>> | 82% | 52,504 psi | 87% | 2454 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,360 psi | 90% | 2520 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 52,895 psi | 88% | 2539 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 53,693 psi | 89% | 2533 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,669 psi | 69% | 2444 fps | 97.3% |
| Accurate 4064 | <<locked>> | 90% | 54,375 psi | 90% | 2566 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 50,720 psi | 84% | 2605 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 51,837 psi | 86% | 2552 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 52,924 psi | 88% | 2556 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 49,719 psi | 83% | 2589 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,215 psi | 90% | 2552 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 51,880 psi | 86% | 2484 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 51,184 psi | 85% | 2661 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 52,997 psi | 88% | 2579 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 53,345 psi | 89% | 2595 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 52,605 psi | 87% | 2661 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 53,621 psi | 89% | 2694 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 48,762 psi | 81% | 2582 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,711 psi | 66% | 2470 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,396 psi | 74% | 2625 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 51,619 psi | 86% | 2572 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 53,055 psi | 88% | 2589 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 53,592 psi | 89% | 2569 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 52,460 psi | 87% | 2490 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 53,403 psi | 89% | 2582 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,215 psi | 90% | 2605 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 96% | 53,809 psi | 89% | 2657 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 92% | 51,256 psi | 85% | 2572 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 84% | 52,359 psi | 87% | 2562 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,214 psi | 87% | 2592 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 51,764 psi | 86% | 2595 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,288 psi | 90% | 2694 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,476 psi | 59% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,519 psi | 89% | 2566 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 52,272 psi | 87% | 2539 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 52,504 psi | 87% | 2543 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 52,431 psi | 87% | 2526 fps | 98.3% |
| IMR 4350 | <<locked>> | 98% | 53,635 psi | 89% | 2592 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 52,141 psi | 87% | 2549 fps | 98.2% |
| IMR 4831 | <<locked>> | 98% | 51,663 psi | 86% | 2602 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 51,532 psi | 86% | 2579 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 54,215 psi | 90% | 2552 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 51,256 psi | 85% | 2530 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 51,532 psi | 86% | 2487 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 52,257 psi | 87% | 2536 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 51,387 psi | 85% | 2543 fps | 99.1% |
| Lovex S070 | <<locked>> | 96% | 52,054 psi | 86% | 2575 fps | 98.5% |
| Norma 201 | <<locked>> | 86% | 53,925 psi | 90% | 2549 fps | 100% |
| Norma 202 | <<locked>> | 84% | 51,010 psi | 85% | 2500 fps | 100% |
| Norma 203B | <<locked>> | 88% | 52,562 psi | 87% | 2582 fps | 100% |
| Norma 204 | <<locked>> | 98% | 54,273 psi | 90% | 2641 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 44,425 psi | 74% | 2585 fps | 96.8% |
| Norma URP | <<locked>> | 98% | 53,737 psi | 89% | 2644 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 53,229 psi | 88% | 2612 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 52,359 psi | 87% | 2644 fps | 99.1% |
| Ramshot TAC | <<locked>> | 84% | 54,186 psi | 90% | 2575 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,215 psi | 90% | 2592 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,911 psi | 60% | 1594 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 51,097 psi | 85% | 2539 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 53,911 psi | 90% | 2657 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,403 psi | 89% | 2690 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,157 psi | 90% | 2677 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,041 psi | 90% | 2710 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 51,532 psi | 86% | 2484 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,302 psi | 90% | 2546 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 52,939 psi | 88% | 2579 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 47,239 psi | 78% | 2559 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 94% | 53,592 psi | 89% | 2569 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 94% | 51,387 psi | 85% | 2543 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 51,256 psi | 85% | 2530 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 52,257 psi | 87% | 2536 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 52,054 psi | 86% | 2575 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 51,648 psi | 86% | 2595 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 52,620 psi | 87% | 2552 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 53,635 psi | 89% | 2575 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 52,054 psi | 86% | 2444 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 52,286 psi | 87% | 2448 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 51,445 psi | 85% | 2500 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 46,789 psi | 78% | 2556 fps | 95.9% |
| Somchem S335 | <<locked>> | 84% | 51,416 psi | 85% | 2444 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 52,620 psi | 87% | 2549 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 53,650 psi | 89% | 2582 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,692 psi | 86% | 2644 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 47,906 psi | 80% | 2543 fps | 97.1% |
| Vihtavuori N133 | <<locked>> | 84% | 52,475 psi | 87% | 2431 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,186 psi | 90% | 2510 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 51,634 psi | 86% | 2487 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 51,387 psi | 85% | 2513 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 52,576 psi | 87% | 2592 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 51,285 psi | 85% | 2507 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 53,026 psi | 88% | 2526 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 51,532 psi | 86% | 2595 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,700 psi | 73% | 2539 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 52,634 psi | 87% | 2572 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 51,227 psi | 85% | 2552 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,157 psi | 90% | 2661 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,418 psi | 59% | 2484 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 86% | 53,476 psi | 89% | 2585 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% | 49,371 psi | 82% | 2411 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,843 psi | 70% | 2349 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,400 psi | 82% | 2493 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,205 psi | 68% | 2329 fps | 95% |
| Accurate 3100 | <<locked>> | 96% | 35,969 psi | 60% | 2339 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 39,639 psi | 66% | 2349 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 30,951 psi | 51% | 2241 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 45,701 psi | 76% | 2461 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 38,914 psi | 65% | 2326 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 98% | 46,441 psi | 77% | 2533 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,819 psi | 79% | 2461 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 48,283 psi | 80% | 2438 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,669 psi | 69% | 2500 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,551 psi | 64% | 2346 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,307 psi | 69% | 2405 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 29,820 psi | 50% | 2208 fps | 95% |
| Alliant Reloder-17 | 40.2 gr | 80% | 33,199 psi | 55% | 2326 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 98% | 45,629 psi | 76% | 2526 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 88% | 27,311 psi | 45% | 2175 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 92% | 33,402 psi | 55% | 2388 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,947 psi | 75% | 2467 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 37,985 psi | 63% | 2346 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 41,539 psi | 69% | 2372 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,472 psi | 82% | 2448 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,702 psi | 78% | 2484 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,798 psi | 64% | 2352 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 86% | 38,493 psi | 64% | 2395 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 88% | 45,179 psi | 75% | 2474 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 46,122 psi | 77% | 2467 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,122 psi | 45% | 2116 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,192 psi | 70% | 2448 fps | 99.9% |
| Hodgdon Superformance | 46.7 gr | 88% | 40,843 psi | 68% | 2464 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 44% | 1391 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,382 psi | 74% | 2428 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 46,021 psi | 76% | 2454 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,843 psi | 68% | 2356 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,337 psi | 72% | 2375 fps | 96.5% |
| IMR 4350 | <<locked>> | 90% | 41,713 psi | 69% | 2398 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 40,669 psi | 68% | 2356 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 30,371 psi | 50% | 2208 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 42,351 psi | 70% | 2431 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 47,819 psi | 79% | 2461 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,962 psi | 75% | 2438 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,469 psi | 76% | 2395 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 40,451 psi | 67% | 2352 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 35,404 psi | 59% | 2260 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 38,029 psi | 63% | 2333 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 44,672 psi | 74% | 2411 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,136 psi | 75% | 2418 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,698 psi | 68% | 2392 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 47,616 psi | 79% | 2539 fps | 95.7% |
| Norma MRP | <<locked>> | 98% | 41,452 psi | 69% | 2530 fps | 95.9% |
| Norma URP | <<locked>> | 82% | 31,647 psi | 53% | 2247 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 40,350 psi | 67% | 2408 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 35,288 psi | 59% | 2336 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 47,703 psi | 79% | 2477 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,224 psi | 78% | 2490 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,905 psi | 45% | 1427 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,204 psi | 65% | 2336 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,642 psi | 73% | 2500 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,404 psi | 59% | 2382 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 30,922 psi | 51% | 2257 fps | 95.2% |
| ReloadSwiss RS 70 | 42.8 gr | 84% | 33,286 psi | 55% | 2316 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 48,530 psi | 81% | 2441 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,366 psi | 70% | 2365 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 35,781 psi | 59% | 2297 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 44,034 psi | 73% | 2507 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 86% | 41,539 psi | 69% | 2372 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,404 psi | 59% | 2260 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,962 psi | 75% | 2438 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,451 psi | 67% | 2352 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 38,029 psi | 63% | 2333 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,738 psi | 61% | 2343 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,963 psi | 76% | 2454 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,019 psi | 73% | 2431 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,992 psi | 76% | 2362 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,305 psi | 64% | 2244 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 39,407 psi | 65% | 2303 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 43,642 psi | 73% | 2500 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 45,672 psi | 76% | 2365 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,759 psi | 76% | 2448 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 36,680 psi | 61% | 2303 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 26,484 psi | 44% | 2152 fps | 97.1% |
| Somchem S385 | <<locked>> | 96% | 41,756 psi | 69% | 2438 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 46,427 psi | 77% | 2352 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,061 psi | 70% | 2343 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,743 psi | 71% | 2359 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,882 psi | 58% | 2244 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 30,980 psi | 51% | 2201 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 47,906 psi | 80% | 2457 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 40,944 psi | 68% | 2349 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 32,518 psi | 54% | 2251 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 88% | 29,283 psi | 49% | 2241 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,734 psi | 51% | 2182 fps | 97.5% |
| Winchester 748 | <<locked>> | 80% | 47,834 psi | 79% | 2503 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 38,740 psi | 64% | 2402 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 92% | 27,325 psi | 45% | 2251 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,758 psi | 73% | 2438 fps | 99.8% |
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 98 powders for 7 x 64 Brenneke loaded with the .284 | 168gr | Peregrine Glider GRM. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,710 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,710 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.284" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 7 x 64 Brenneke with the .284 | 168gr | Peregrine Glider GRM 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.