Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 160gr | Speer Hot-Cor 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 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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>> | 84% | 53,359 psi | 89% | 2595 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 51,503 psi | 86% | 2598 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,369 psi | 79% | 2625 fps | 98.5% |
| Accurate 4064 | <<locked>> | 86% | 53,447 psi | 89% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,447 psi | 89% | 2736 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 53,098 psi | 88% | 2667 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,114 psi | 90% | 2671 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 51,503 psi | 86% | 2717 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,837 psi | 88% | 2785 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,447 psi | 90% | 2690 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 51,735 psi | 86% | 2667 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,288 psi | 90% | 2785 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 51,851 psi | 86% | 2762 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,795 psi | 89% | 2756 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,384 psi | 79% | 2700 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,788 psi | 74% | 2651 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,204 psi | 65% | 2562 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,560 psi | 84% | 2822 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,649 psi | 87% | 2680 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 51,663 psi | 86% | 2661 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,384 psi | 79% | 2700 fps | 96.3% |
| Bofors RP7 | <<locked>> | 90% | 51,692 psi | 86% | 2641 fps | 98% |
| Hodgdon H380 | <<locked>> | 86% | 52,286 psi | 87% | 2671 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 52,359 psi | 87% | 2730 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 52,794 psi | 88% | 2694 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 82% | 53,679 psi | 89% | 2677 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,346 psi | 90% | 2713 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,490 psi | 89% | 2713 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 52,402 psi | 87% | 2762 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,969 psi | 60% | 1647 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 51,213 psi | 85% | 2628 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,012 psi | 90% | 2654 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,751 psi | 89% | 2657 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,142 psi | 88% | 2638 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 52,040 psi | 86% | 2667 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,374 psi | 89% | 2667 fps | 98.6% |
| IMR 4831 | <<locked>> | 96% | 53,838 psi | 89% | 2726 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 53,026 psi | 88% | 2694 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 54,404 psi | 90% | 2700 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 82% | 53,011 psi | 88% | 2644 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,359 psi | 87% | 2598 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,780 psi | 89% | 2651 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,156 psi | 88% | 2664 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 54,230 psi | 90% | 2703 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,407 psi | 65% | 2484 fps | 96.8% |
| Norma 201 | <<locked>> | 82% | 51,866 psi | 86% | 2615 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,576 psi | 87% | 2615 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,114 psi | 90% | 2700 fps | 100% |
| Norma 204 | <<locked>> | 94% | 52,649 psi | 87% | 2717 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 50,270 psi | 84% | 2782 fps | 98.3% |
| Norma URP | <<locked>> | 94% | 52,591 psi | 87% | 2723 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 51,242 psi | 85% | 2677 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 51,358 psi | 85% | 2723 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,695 psi | 61% | 1690 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,547 psi | 87% | 2657 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 51,996 psi | 86% | 2726 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 51,605 psi | 86% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,113 psi | 88% | 2756 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,127 psi | 87% | 2782 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 52,402 psi | 87% | 2615 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 51,837 psi | 86% | 2654 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 53,127 psi | 88% | 2690 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,794 psi | 88% | 2743 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 51,692 psi | 86% | 2641 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,156 psi | 88% | 2664 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,011 psi | 88% | 2644 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,780 psi | 89% | 2651 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,230 psi | 90% | 2703 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,185 psi | 88% | 2710 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,099 psi | 90% | 2671 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 51,430 psi | 85% | 2641 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,997 psi | 88% | 2552 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,417 psi | 89% | 2552 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,765 psi | 88% | 2615 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,301 psi | 87% | 2736 fps | 97.4% |
| Somchem S335 | <<locked>> | 82% | 52,547 psi | 87% | 2552 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,635 psi | 89% | 2657 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 52,112 psi | 87% | 2654 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 50,966 psi | 85% | 2726 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,606 psi | 89% | 2723 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 53,461 psi | 89% | 2539 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,562 psi | 87% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,098 psi | 88% | 2598 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,113 psi | 88% | 2631 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 51,184 psi | 85% | 2667 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,122 psi | 77% | 2592 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 86% | 54,418 psi | 90% | 2638 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 53,737 psi | 89% | 2723 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,951 psi | 83% | 2723 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,346 psi | 90% | 2690 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 52,707 psi | 88% | 2736 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,248 psi | 67% | 2687 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 51,488 psi | 86% | 2651 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,067 psi | 83% | 2657 fps | 96.6% |
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 2495 | <<locked>> | 80% | 46,891 psi | 78% | 2503 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,324 psi | 75% | 2497 fps | 96.4% |
| Accurate 3100 | <<locked>> | 92% | 36,071 psi | 60% | 2415 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 44,367 psi | 74% | 2507 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,098 psi | 55% | 2362 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 80% | 49,792 psi | 83% | 2618 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,496 psi | 71% | 2480 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 45,107 psi | 75% | 2605 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,905 psi | 76% | 2671 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,438 psi | 71% | 2500 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,411 psi | 75% | 2562 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,982 psi | 55% | 2372 fps | 96.7% |
| Alliant Reloder-17 | 44.9 gr | 80% | 36,883 psi | 61% | 2490 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 44,498 psi | 74% | 2598 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,338 psi | 74% | 2641 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,195 psi | 45% | 2241 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,679 psi | 58% | 2454 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,054 psi | 55% | 2461 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,414 psi | 82% | 2631 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 42,525 psi | 71% | 2510 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 44,338 psi | 74% | 2641 fps | 95.5% |
| Bofors RP7 | <<locked>> | 82% | 40,335 psi | 67% | 2438 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 43,178 psi | 72% | 2520 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 37,608 psi | 62% | 2457 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 84% | 43,497 psi | 72% | 2533 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 50,343 psi | 84% | 2625 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,414 psi | 51% | 2277 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,630 psi | 77% | 2608 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 39,334 psi | 65% | 2523 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 45% | 1470 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,283 psi | 80% | 2582 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,778 psi | 84% | 2612 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,657 psi | 74% | 2513 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,760 psi | 78% | 2533 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 40,727 psi | 68% | 2467 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,247 psi | 65% | 2415 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 32,010 psi | 53% | 2320 fps | 96.2% |
| IMR 4895 | <<locked>> | 80% | 46,572 psi | 77% | 2592 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 51,343 psi | 85% | 2651 fps | 95% |
| Lovex D073.6 | <<locked>> | 80% | 49,603 psi | 82% | 2595 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,385 psi | 82% | 2552 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,802 psi | 74% | 2513 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,811 psi | 61% | 2369 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 37,246 psi | 62% | 2398 fps | 95.2% |
| Lovex S071 | <<locked>> | 96% | 34,737 psi | 58% | 2385 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 48,863 psi | 81% | 2569 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,255 psi | 82% | 2569 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,788 psi | 74% | 2552 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 45,818 psi | 76% | 2602 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 38,247 psi | 64% | 2546 fps | 95% |
| Norma URP | <<locked>> | 80% | 33,373 psi | 55% | 2362 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 80% | 44,672 psi | 74% | 2572 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 36,796 psi | 61% | 2451 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,340 psi | 45% | 1506 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,149 psi | 72% | 2500 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,559 psi | 81% | 2671 fps | 99.9% |
| ReloadSwiss RS 60 | 44.9 gr | 80% | 39,262 psi | 65% | 2549 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,822 psi | 55% | 2375 fps | 96% |
| ReloadSwiss RS 70 | 45.6 gr | 80% | 32,401 psi | 54% | 2375 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 46,572 psi | 77% | 2526 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,103 psi | 67% | 2461 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 50,038 psi | 83% | 2641 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 94% | 43,279 psi | 72% | 2579 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 82% | 40,335 psi | 67% | 2438 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,811 psi | 61% | 2369 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,603 psi | 82% | 2595 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,802 psi | 74% | 2513 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 37,246 psi | 62% | 2398 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,901 psi | 68% | 2507 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,401 psi | 84% | 2615 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,254 psi | 80% | 2589 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,893 psi | 83% | 2510 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,887 psi | 70% | 2385 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,421 psi | 64% | 2365 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 42,859 psi | 71% | 2575 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 49,559 psi | 82% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,299 psi | 84% | 2608 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,596 psi | 67% | 2461 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 29,921 psi | 50% | 2320 fps | 98.6% |
| Somchem S385 | <<locked>> | 92% | 41,365 psi | 69% | 2516 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 50,357 psi | 84% | 2497 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,456 psi | 77% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,847 psi | 78% | 2507 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,783 psi | 64% | 2398 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 34,606 psi | 57% | 2362 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 98% | 43,395 psi | 72% | 2543 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 45,208 psi | 75% | 2503 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,258 psi | 57% | 2365 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 84% | 29,501 psi | 49% | 2313 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,113 psi | 57% | 2339 fps | 98.7% |
| Winchester 760 | <<locked>> | 82% | 37,826 psi | 63% | 2464 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,137 psi | 45% | 2320 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,950 psi | 80% | 2595 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 43,918 psi | 73% | 2552 fps | 95% |
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 108 powders for 7 x 64 Brenneke loaded with the .284 | 160gr | Speer Hot-Cor. Alliant Reloder-26 delivers the highest muzzle velocity at 2,822 fps; across all powders the maximum-charge window runs from 1,647 fps to 2,822 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 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 160.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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-17, ReloadSwiss RS 60 rank at the top here: for 7 x 64 Brenneke with the .284 | 160gr | Speer Hot-Cor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Hodgdon H1000 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.