Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 175gr | Barnes Solid RN 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-16 and Alliant Reloder-26.
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 2495 | <<locked>> | 82% | 51,561 psi | 86% | 2441 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 52,939 psi | 88% | 2497 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,095 psi | 82% | 2530 fps | 99.2% |
| Accurate 4064 | <<locked>> | 84% | 51,866 psi | 86% | 2487 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 51,677 psi | 86% | 2579 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 52,127 psi | 87% | 2513 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 52,881 psi | 88% | 2615 fps | 97.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 50,676 psi | 84% | 2608 fps | 96.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,375 psi | 90% | 2674 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 52,823 psi | 88% | 2615 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 52,663 psi | 87% | 2536 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 52,968 psi | 88% | 2556 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 52,765 psi | 88% | 2631 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,490 psi | 89% | 2654 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 52,083 psi | 87% | 2608 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,037 psi | 81% | 2608 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,238 psi | 77% | 2552 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,393 psi | 67% | 2477 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,359 psi | 87% | 2723 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,273 psi | 90% | 2575 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 44,846 psi | 75% | 2533 fps | 96.4% |
| Bofors RP3 | <<locked>> | 86% | 53,272 psi | 89% | 2549 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,037 psi | 81% | 2608 fps | 97.5% |
| Bofors RP7 | <<locked>> | 90% | 52,910 psi | 88% | 2536 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 86% | 53,867 psi | 89% | 2566 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 53,954 psi | 90% | 2628 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 90% | 54,317 psi | 90% | 2592 fps | 98.4% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 54,201 psi | 90% | 2612 fps | 96.3% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 53,156 psi | 88% | 2595 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 52,591 psi | 87% | 2559 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 51,576 psi | 86% | 2552 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,925 psi | 90% | 2661 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 60% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 52,518 psi | 87% | 2516 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 51,619 psi | 86% | 2497 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,331 psi | 90% | 2530 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 53,693 psi | 89% | 2569 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 51,401 psi | 85% | 2513 fps | 98.8% |
| IMR 4831 | <<locked>> | 94% | 52,199 psi | 87% | 2572 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,360 psi | 90% | 2582 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,562 psi | 87% | 2552 fps | 96.1% |
| Lovex S060 | <<locked>> | 82% | 53,403 psi | 89% | 2484 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 51,779 psi | 86% | 2493 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 51,387 psi | 85% | 2513 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 52,315 psi | 87% | 2549 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,828 psi | 68% | 2398 fps | 97.9% |
| Norma 201 | <<locked>> | 82% | 53,359 psi | 89% | 2503 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,882 psi | 90% | 2500 fps | 100% |
| Norma 203B | <<locked>> | 84% | 52,257 psi | 87% | 2543 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,070 psi | 90% | 2612 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 51,692 psi | 86% | 2680 fps | 99.1% |
| Norma URP | <<locked>> | 94% | 54,085 psi | 90% | 2615 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 52,649 psi | 87% | 2566 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 52,779 psi | 88% | 2618 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 42,482 psi | 71% | 2474 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,883 psi | 61% | 1601 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,838 psi | 89% | 2552 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,505 psi | 89% | 2615 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,447 psi | 89% | 2651 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 51,503 psi | 86% | 2605 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,809 psi | 89% | 2680 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 53,998 psi | 90% | 2507 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,432 psi | 89% | 2549 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 51,474 psi | 86% | 2543 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 98% | 51,111 psi | 85% | 2592 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 90% | 52,910 psi | 88% | 2536 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 51,387 psi | 85% | 2513 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 51,779 psi | 86% | 2493 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 52,315 psi | 87% | 2549 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 51,503 psi | 86% | 2556 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 52,692 psi | 88% | 2530 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,273 psi | 90% | 2441 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 51,547 psi | 86% | 2402 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,288 psi | 90% | 2516 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,027 psi | 90% | 2638 fps | 98.3% |
| Somchem S335 | <<locked>> | 82% | 53,998 psi | 90% | 2441 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,563 psi | 89% | 2543 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 52,968 psi | 88% | 2536 fps | 95.9% |
| Somchem S365 | <<locked>> | 96% | 52,852 psi | 88% | 2618 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 51,692 psi | 86% | 2569 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 84% | 54,172 psi | 90% | 2467 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,259 psi | 90% | 2480 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 51,474 psi | 86% | 2480 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 52,808 psi | 88% | 2562 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,674 psi | 79% | 2497 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 52,402 psi | 87% | 2480 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 51,837 psi | 86% | 2569 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,663 psi | 86% | 2621 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 52,286 psi | 87% | 2667 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 52,359 psi | 87% | 2536 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,302 psi | 90% | 2631 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,611 psi | 69% | 2598 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 52,895 psi | 88% | 2539 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,895 psi | 86% | 2566 fps | 97.7% |
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% | 48,370 psi | 80% | 2398 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,311 psi | 77% | 2395 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 32,895 psi | 55% | 2238 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 45,818 psi | 76% | 2405 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,447 psi | 57% | 2280 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 43,613 psi | 72% | 2382 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 92% | 43,482 psi | 72% | 2461 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 98% | 47,210 psi | 78% | 2549 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,282 psi | 79% | 2566 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 40,959 psi | 68% | 2411 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,743 psi | 73% | 2402 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,847 psi | 78% | 2464 fps | 99.9% |
| Alliant Reloder-16 | 39.9 gr | 80% | 34,011 psi | 57% | 2290 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,189 psi | 63% | 2402 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 40,480 psi | 67% | 2405 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 40,132 psi | 67% | 2444 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 24,831 psi | 41% | 2070 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 92% | 31,546 psi | 52% | 2267 fps | 95.1% |
| Alliant Reloder-26 | 46.2 gr | 84% | 29,791 psi | 49% | 2267 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,763 psi | 84% | 2526 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 42,148 psi | 70% | 2484 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 43,758 psi | 73% | 2411 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 40,132 psi | 67% | 2444 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 38,885 psi | 65% | 2293 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 44,121 psi | 73% | 2418 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 36,318 psi | 60% | 2320 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 80% | 39,465 psi | 66% | 2339 fps | 95.1% |
| Hodgdon H4831 | <<locked>> | 98% | 50,488 psi | 84% | 2556 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 49,588 psi | 82% | 2539 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,401 psi | 52% | 2192 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,153 psi | 80% | 2503 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 37,768 psi | 63% | 2379 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 45% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,385 psi | 82% | 2474 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,876 psi | 76% | 2408 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,138 psi | 80% | 2434 fps | 98.4% |
| IMR 4350 | <<locked>> | 82% | 37,014 psi | 61% | 2280 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,364 psi | 67% | 2326 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 33,228 psi | 55% | 2241 fps | 97.5% |
| IMR 4895 | <<locked>> | 80% | 48,022 psi | 80% | 2487 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 49,501 psi | 82% | 2503 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 50,299 psi | 84% | 2441 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,745 psi | 76% | 2405 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,898 psi | 63% | 2280 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 36,013 psi | 60% | 2260 fps | 95.7% |
| Lovex S071 | <<locked>> | 94% | 33,765 psi | 56% | 2257 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 50,198 psi | 83% | 2461 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,633 psi | 84% | 2457 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,238 psi | 77% | 2451 fps | 100% |
| Norma 204 | <<locked>> | 86% | 41,452 psi | 69% | 2405 fps | 95.1% |
| Norma MRP | <<locked>> | 90% | 36,970 psi | 61% | 2408 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 34,360 psi | 57% | 2274 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 45,948 psi | 76% | 2467 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 33,373 psi | 55% | 2260 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 98% | 39,755 psi | 66% | 2421 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,586 psi | 46% | 1430 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,382 psi | 74% | 2405 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,169 psi | 83% | 2566 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,625 psi | 67% | 2451 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,924 psi | 56% | 2293 fps | 97.3% |
| ReloadSwiss RS 70 | 43.6 gr | 80% | 33,344 psi | 55% | 2293 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 80% | 47,776 psi | 79% | 2418 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,191 psi | 68% | 2362 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 45,136 psi | 75% | 2441 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 41,829 psi | 69% | 2438 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 38,885 psi | 65% | 2293 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,898 psi | 63% | 2280 fps | 97.4% |
| Shooters World Precision | <<locked>> | 80% | 45,745 psi | 76% | 2405 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,013 psi | 60% | 2260 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,235 psi | 70% | 2411 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,574 psi | 82% | 2484 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,952 psi | 85% | 2398 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,888 psi | 71% | 2283 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 36,898 psi | 61% | 2228 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 41,437 psi | 69% | 2431 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 50,865 psi | 85% | 2402 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,843 psi | 70% | 2362 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 49,588 psi | 82% | 2487 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 30,864 psi | 51% | 2238 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 37,376 psi | 62% | 2323 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 47,688 psi | 79% | 2382 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,935 psi | 80% | 2398 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,769 psi | 66% | 2300 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,882 psi | 60% | 2277 fps | 98% |
| Vihtavuori N165 | <<locked>> | 94% | 39,160 psi | 65% | 2349 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 46,166 psi | 77% | 2395 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,143 psi | 58% | 2274 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 26,905 psi | 45% | 2139 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 98% | 49,110 psi | 82% | 2618 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,099 psi | 58% | 2251 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 36,550 psi | 61% | 2323 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 24,743 psi | 41% | 2139 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,472 psi | 82% | 2490 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 42,090 psi | 70% | 2408 fps | 95.4% |
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 94 powders for 7 x 64 Brenneke loaded with the .284 | 175gr | Barnes Solid RN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,723 fps; across all powders the maximum-charge window runs from 1,565 fps to 2,723 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 175.0 gr projectile in 0.284" calls for a 1:10.5 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-16, Alliant Reloder-26 rank at the top here: for 7 x 64 Brenneke with the .284 | 175gr | Barnes Solid RN 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.