Load Specifications
Load data in caliber .280 Rem. with .284 | 165gr | Sierra Tipped GameKing 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.
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>> | 84% | 52,721 psi | 90% | 2543 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 50,894 psi | 87% | 2546 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,557 psi | 79% | 2572 fps | 98.5% |
| Accurate 4064 | <<locked>> | 86% | 52,866 psi | 90% | 2589 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 52,649 psi | 90% | 2677 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 50,836 psi | 87% | 2753 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 82% | 52,518 psi | 89% | 2615 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 50,517 psi | 86% | 2572 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 50,662 psi | 86% | 2661 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,214 psi | 89% | 2730 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 50,575 psi | 86% | 2657 fps | 96.9% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 50,575 psi | 86% | 2657 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 50,865 psi | 87% | 2595 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 50,908 psi | 87% | 2608 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 50,618 psi | 86% | 2684 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 51,126 psi | 87% | 2707 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,997 psi | 90% | 2700 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,702 psi | 80% | 2644 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,005 psi | 75% | 2595 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,798 psi | 66% | 2513 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,690 psi | 85% | 2766 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,054 psi | 89% | 2628 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 51,256 psi | 87% | 2608 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,702 psi | 80% | 2644 fps | 96.3% |
| Bofors RP7 | <<locked>> | 90% | 51,140 psi | 87% | 2585 fps | 98% |
| Hodgdon H380 | <<locked>> | 86% | 51,909 psi | 88% | 2621 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 51,648 psi | 88% | 2674 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 52,301 psi | 89% | 2641 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 82% | 53,055 psi | 90% | 2621 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 50,270 psi | 86% | 2615 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 52,794 psi | 90% | 2657 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 51,721 psi | 88% | 2710 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 61% | 1614 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 50,937 psi | 87% | 2579 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 50,053 psi | 85% | 2556 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,736 psi | 90% | 2585 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 51,663 psi | 88% | 2615 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,823 psi | 90% | 2615 fps | 98.6% |
| IMR 4831 | <<locked>> | 96% | 53,098 psi | 90% | 2671 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 52,199 psi | 89% | 2635 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,489 psi | 89% | 2592 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,025 psi | 89% | 2549 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 50,111 psi | 85% | 2552 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,649 psi | 90% | 2612 fps | 99.4% |
| Lovex S070 | <<locked>> | 92% | 50,372 psi | 86% | 2598 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,754 psi | 66% | 2434 fps | 96.8% |
| Norma 201 | <<locked>> | 82% | 51,503 psi | 88% | 2562 fps | 100% |
| Norma 202 | <<locked>> | 82% | 51,938 psi | 88% | 2559 fps | 100% |
| Norma 203B | <<locked>> | 84% | 50,198 psi | 85% | 2598 fps | 100% |
| Norma 204 | <<locked>> | 94% | 51,764 psi | 88% | 2657 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 49,327 psi | 84% | 2723 fps | 98.2% |
| Norma URP | <<locked>> | 94% | 51,793 psi | 88% | 2667 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 50,618 psi | 86% | 2621 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 50,444 psi | 86% | 2664 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,593 psi | 62% | 1650 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,011 psi | 89% | 2605 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 51,430 psi | 88% | 2671 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 51,068 psi | 87% | 2707 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 52,504 psi | 89% | 2703 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 51,343 psi | 87% | 2723 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 52,083 psi | 89% | 2566 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 51,126 psi | 87% | 2602 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 52,591 psi | 90% | 2638 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,953 psi | 88% | 2684 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 90% | 51,140 psi | 87% | 2585 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,649 psi | 90% | 2612 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,489 psi | 89% | 2592 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 50,111 psi | 85% | 2552 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 50,372 psi | 86% | 2598 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,591 psi | 90% | 2657 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 50,966 psi | 87% | 2589 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,547 psi | 89% | 2500 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 52,895 psi | 90% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,344 psi | 89% | 2566 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,459 psi | 88% | 2680 fps | 97.3% |
| Somchem S335 | <<locked>> | 82% | 52,199 psi | 89% | 2500 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 52,982 psi | 90% | 2605 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 51,387 psi | 87% | 2598 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 50,212 psi | 85% | 2671 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,852 psi | 90% | 2667 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 52,982 psi | 90% | 2487 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,083 psi | 89% | 2530 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 52,547 psi | 89% | 2546 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,489 psi | 89% | 2575 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 50,662 psi | 86% | 2615 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,397 psi | 77% | 2536 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 84% | 50,662 psi | 86% | 2539 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 53,113 psi | 90% | 2671 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,023 psi | 83% | 2667 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 50,169 psi | 85% | 2589 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 51,982 psi | 88% | 2680 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,465 psi | 67% | 2628 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 50,734 psi | 86% | 2595 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,443 psi | 84% | 2605 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% | 46,398 psi | 79% | 2454 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,860 psi | 76% | 2444 fps | 96.4% |
| Accurate 3100 | <<locked>> | 92% | 35,607 psi | 61% | 2369 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,918 psi | 75% | 2457 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,764 psi | 56% | 2316 fps | 96.6% |
| Accurate High Country | <<locked>> | 98% | 47,398 psi | 81% | 2690 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 49,472 psi | 84% | 2566 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,090 psi | 72% | 2431 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 44,759 psi | 76% | 2556 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,484 psi | 77% | 2618 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 44,454 psi | 76% | 2552 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 44,454 psi | 76% | 2552 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,018 psi | 72% | 2454 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,034 psi | 77% | 2513 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,663 psi | 56% | 2326 fps | 96.7% |
| Alliant Reloder-17 | 43.5 gr | 80% | 36,477 psi | 62% | 2441 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 43,888 psi | 75% | 2546 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,903 psi | 75% | 2592 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,847 psi | 46% | 2198 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,243 psi | 58% | 2405 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,547 psi | 55% | 2408 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,718 psi | 83% | 2579 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 41,901 psi | 71% | 2457 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 43,903 psi | 75% | 2592 fps | 95.5% |
| Bofors RP7 | <<locked>> | 82% | 39,813 psi | 68% | 2385 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 42,641 psi | 73% | 2467 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 37,144 psi | 63% | 2411 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 84% | 43,091 psi | 73% | 2484 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 49,966 psi | 85% | 2575 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,066 psi | 51% | 2231 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,108 psi | 78% | 2556 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 39,001 psi | 66% | 2474 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 46% | 1440 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,645 psi | 81% | 2526 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,251 psi | 75% | 2461 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,543 psi | 79% | 2484 fps | 97.6% |
| IMR 4350 | <<locked>> | 86% | 40,118 psi | 68% | 2415 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,928 psi | 66% | 2369 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 31,676 psi | 54% | 2274 fps | 96.3% |
| IMR 4895 | <<locked>> | 80% | 46,195 psi | 79% | 2539 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 49,008 psi | 83% | 2543 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,718 psi | 83% | 2497 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,063 psi | 75% | 2457 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,463 psi | 62% | 2323 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 36,753 psi | 63% | 2346 fps | 95.2% |
| Lovex S071 | <<locked>> | 96% | 34,243 psi | 58% | 2339 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 48,443 psi | 82% | 2516 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,849 psi | 83% | 2516 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,425 psi | 76% | 2503 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 45,411 psi | 77% | 2552 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 37,768 psi | 64% | 2497 fps | 95% |
| Norma URP | <<locked>> | 80% | 32,822 psi | 56% | 2313 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 80% | 44,251 psi | 75% | 2520 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 36,477 psi | 62% | 2405 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,209 psi | 46% | 1473 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,685 psi | 73% | 2451 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,935 psi | 82% | 2615 fps | 99.9% |
| ReloadSwiss RS 60 | 43.5 gr | 80% | 38,783 psi | 66% | 2497 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,416 psi | 55% | 2333 fps | 96.1% |
| ReloadSwiss RS 70 | 44.2 gr | 80% | 32,082 psi | 55% | 2329 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 46,122 psi | 79% | 2474 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,479 psi | 67% | 2408 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 49,400 psi | 84% | 2585 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 94% | 42,873 psi | 73% | 2530 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 39,813 psi | 68% | 2385 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,463 psi | 62% | 2323 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,008 psi | 83% | 2543 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,063 psi | 75% | 2457 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,753 psi | 63% | 2346 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,422 psi | 69% | 2457 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,718 psi | 81% | 2539 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,371 psi | 84% | 2457 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,437 psi | 71% | 2336 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,956 psi | 65% | 2316 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 42,467 psi | 72% | 2526 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 49,182 psi | 84% | 2461 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,559 psi | 84% | 2556 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,205 psi | 68% | 2411 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 29,414 psi | 50% | 2270 fps | 98.5% |
| Somchem S385 | <<locked>> | 92% | 40,712 psi | 69% | 2464 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 49,835 psi | 85% | 2444 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,876 psi | 78% | 2441 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,224 psi | 79% | 2454 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,159 psi | 65% | 2349 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 34,272 psi | 58% | 2316 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 98% | 42,685 psi | 73% | 2487 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 44,657 psi | 76% | 2451 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,765 psi | 57% | 2316 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 84% | 29,066 psi | 49% | 2267 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,634 psi | 57% | 2290 fps | 98.7% |
| Winchester 760 | <<locked>> | 82% | 37,376 psi | 64% | 2415 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,847 psi | 46% | 2274 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,471 psi | 81% | 2543 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,296 psi | 79% | 2556 fps | 95.8% |
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 94 powders for .280 Rem. loaded with the .284 | 165gr | Sierra Tipped GameKing. Alliant Reloder-26 delivers the highest muzzle velocity at 2,766 fps; across all powders the maximum-charge window runs from 1,614 fps to 2,766 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 (405 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, 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, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .280 Rem. with the .284 | 165gr | Sierra Tipped GameKing 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.