Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 160gr | Winchester FailSafe 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, 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.
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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% | 52,866 psi | 88% | 2585 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 51,198 psi | 85% | 2592 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,775 psi | 78% | 2612 fps | 98.4% |
| Accurate 4064 | <<locked>> | 86% | 52,968 psi | 88% | 2635 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,055 psi | 88% | 2726 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 52,678 psi | 88% | 2657 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,693 psi | 89% | 2664 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,447 psi | 90% | 2759 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,417 psi | 87% | 2776 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,070 psi | 90% | 2684 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,433 psi | 90% | 2703 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,954 psi | 90% | 2779 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 51,488 psi | 86% | 2756 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,200 psi | 88% | 2746 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,833 psi | 78% | 2687 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,266 psi | 74% | 2641 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,957 psi | 65% | 2552 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,995 psi | 83% | 2812 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,286 psi | 87% | 2674 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 51,256 psi | 85% | 2651 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,833 psi | 78% | 2687 fps | 96.1% |
| Bofors RP7 | <<locked>> | 90% | 51,358 psi | 85% | 2631 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,404 psi | 90% | 2684 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 51,895 psi | 86% | 2664 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 52,040 psi | 86% | 2723 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 90% | 52,475 psi | 87% | 2687 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 53,243 psi | 88% | 2667 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,041 psi | 90% | 2707 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 52,794 psi | 88% | 2700 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 51,837 psi | 86% | 2753 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,085 psi | 60% | 1647 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,244 psi | 90% | 2667 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,461 psi | 89% | 2644 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,287 psi | 89% | 2648 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,794 psi | 88% | 2628 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 51,750 psi | 86% | 2657 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,026 psi | 88% | 2657 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 53,519 psi | 89% | 2717 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 52,605 psi | 87% | 2684 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,562 psi | 87% | 2635 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 51,938 psi | 86% | 2589 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,359 psi | 89% | 2644 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,518 psi | 87% | 2651 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 53,606 psi | 89% | 2690 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,059 psi | 65% | 2474 fps | 96.6% |
| Norma 201 | <<locked>> | 82% | 51,401 psi | 85% | 2605 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,112 psi | 87% | 2608 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,693 psi | 89% | 2690 fps | 100% |
| Norma 204 | <<locked>> | 94% | 52,069 psi | 87% | 2703 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 49,414 psi | 82% | 2766 fps | 98.1% |
| Norma URP | <<locked>> | 94% | 51,895 psi | 86% | 2710 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 54,288 psi | 90% | 2717 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 54,201 psi | 90% | 2762 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,564 psi | 61% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 51,909 psi | 86% | 2648 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 51,488 psi | 86% | 2713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 51,271 psi | 85% | 2753 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 52,489 psi | 87% | 2743 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 51,532 psi | 86% | 2769 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 52,272 psi | 87% | 2608 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 51,459 psi | 85% | 2648 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 52,518 psi | 87% | 2677 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,199 psi | 87% | 2730 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 90% | 51,358 psi | 85% | 2631 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,518 psi | 87% | 2651 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,562 psi | 87% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,359 psi | 89% | 2644 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 53,606 psi | 89% | 2690 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,794 psi | 88% | 2703 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,737 psi | 89% | 2664 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,418 psi | 90% | 2680 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,562 psi | 87% | 2543 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,026 psi | 88% | 2546 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,475 psi | 87% | 2608 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,721 psi | 86% | 2723 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 52,112 psi | 87% | 2543 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,243 psi | 88% | 2651 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 51,735 psi | 86% | 2644 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 53,911 psi | 90% | 2762 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,997 psi | 88% | 2710 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 82% | 52,968 psi | 88% | 2530 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,040 psi | 86% | 2569 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 52,678 psi | 88% | 2589 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,721 psi | 88% | 2621 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,346 psi | 90% | 2710 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,571 psi | 76% | 2579 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 86% | 54,085 psi | 90% | 2628 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 53,113 psi | 88% | 2710 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,269 psi | 82% | 2710 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,780 psi | 89% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 52,040 psi | 86% | 2723 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,784 psi | 66% | 2674 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 51,053 psi | 85% | 2641 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,559 psi | 82% | 2648 fps | 96.4% |
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% | 46,383 psi | 77% | 2493 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,947 psi | 75% | 2487 fps | 96.2% |
| Accurate 3100 | <<locked>> | 92% | 35,723 psi | 59% | 2405 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 43,918 psi | 73% | 2497 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,706 psi | 54% | 2349 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 80% | 49,342 psi | 82% | 2608 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,076 psi | 70% | 2470 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 44,817 psi | 74% | 2595 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,527 psi | 76% | 2661 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,018 psi | 70% | 2490 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,976 psi | 75% | 2552 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,634 psi | 54% | 2359 fps | 96.5% |
| Alliant Reloder-17 | 44.5 gr | 80% | 36,550 psi | 61% | 2480 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 44,237 psi | 73% | 2592 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,859 psi | 73% | 2628 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,934 psi | 45% | 2231 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,272 psi | 57% | 2438 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,793 psi | 54% | 2451 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,037 psi | 81% | 2621 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 42,090 psi | 70% | 2500 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 43,859 psi | 73% | 2628 fps | 95.2% |
| Bofors RP7 | <<locked>> | 82% | 40,016 psi | 66% | 2428 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,952 psi | 85% | 2635 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,786 psi | 71% | 2510 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 39,827 psi | 66% | 2503 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 43,149 psi | 72% | 2523 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 49,893 psi | 83% | 2618 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,095 psi | 50% | 2264 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,224 psi | 77% | 2598 fps | 100% |
| Hodgdon Superformance | 50.6 gr | 86% | 41,989 psi | 70% | 2572 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 45% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,848 psi | 79% | 2572 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,241 psi | 83% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,222 psi | 73% | 2500 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,427 psi | 77% | 2523 fps | 97.4% |
| IMR 4350 | <<locked>> | 86% | 40,393 psi | 67% | 2457 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,899 psi | 65% | 2405 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 31,850 psi | 53% | 2313 fps | 96.1% |
| IMR 4895 | <<locked>> | 80% | 46,122 psi | 77% | 2582 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 49,153 psi | 82% | 2585 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,008 psi | 81% | 2543 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,353 psi | 74% | 2503 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,463 psi | 61% | 2359 fps | 96.1% |
| Lovex S070 | <<locked>> | 82% | 36,898 psi | 61% | 2385 fps | 95% |
| Lovex S071 | <<locked>> | 96% | 34,171 psi | 57% | 2372 fps | 95% |
| Norma 201 | <<locked>> | 80% | 48,414 psi | 80% | 2559 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,776 psi | 81% | 2559 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,353 psi | 74% | 2543 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 45,498 psi | 76% | 2592 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 40,379 psi | 67% | 2592 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 33,011 psi | 55% | 2352 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 80% | 44,280 psi | 74% | 2562 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 36,492 psi | 61% | 2441 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,383 psi | 45% | 1506 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,743 psi | 71% | 2487 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,095 psi | 80% | 2661 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,856 psi | 65% | 2536 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,489 psi | 54% | 2365 fps | 95.9% |
| ReloadSwiss RS 70 | 46.3 gr | 82% | 34,301 psi | 57% | 2421 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 46,122 psi | 77% | 2513 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,668 psi | 66% | 2451 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 49,429 psi | 82% | 2625 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 42,975 psi | 71% | 2572 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 40,016 psi | 66% | 2428 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,463 psi | 61% | 2359 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,153 psi | 82% | 2585 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,353 psi | 74% | 2503 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,898 psi | 61% | 2385 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,509 psi | 67% | 2497 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,980 psi | 83% | 2605 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,863 psi | 80% | 2579 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,414 psi | 82% | 2500 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,481 psi | 69% | 2379 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,101 psi | 63% | 2356 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,295 psi | 75% | 2618 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 49,168 psi | 82% | 2500 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,879 psi | 83% | 2602 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,161 psi | 67% | 2451 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 29,573 psi | 49% | 2310 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 40,799 psi | 68% | 2503 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 49,893 psi | 83% | 2487 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,963 psi | 76% | 2484 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,456 psi | 77% | 2500 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,363 psi | 64% | 2388 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,243 psi | 57% | 2352 fps | 96.7% |
| Vihtavuori N165 | <<locked>> | 98% | 42,873 psi | 71% | 2530 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 44,817 psi | 74% | 2493 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,910 psi | 56% | 2356 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 84% | 29,153 psi | 48% | 2303 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,823 psi | 56% | 2329 fps | 98.6% |
| Winchester 760 | <<locked>> | 82% | 37,478 psi | 62% | 2454 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,919 psi | 45% | 2306 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,543 psi | 79% | 2585 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,470 psi | 77% | 2595 fps | 95.6% |
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 | 160gr | Winchester FailSafe. Alliant Reloder-26 delivers the highest muzzle velocity at 2,812 fps; across all powders the maximum-charge window runs from 1,647 fps to 2,812 fps. Accurate 3100 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 60–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.5 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 | 160gr | Winchester FailSafe 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.