Load Specifications
Load data in caliber .280 Rem. with .284 | 161gr | SUS-TAC LRT bullet and 95 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 Ramshot Hunter.
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% | 50,169 psi | 85% | 2533 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 52,402 psi | 89% | 2585 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,164 psi | 75% | 2552 fps | 97.6% |
| Accurate 4064 | <<locked>> | 86% | 50,372 psi | 86% | 2582 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 49,864 psi | 85% | 2661 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 82% | 50,589 psi | 86% | 2608 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 51,576 psi | 88% | 2612 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,721 psi | 88% | 2694 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 52,779 psi | 90% | 2608 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 49,647 psi | 85% | 2710 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 51,300 psi | 87% | 2618 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 51,750 psi | 88% | 2631 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 52,156 psi | 89% | 2651 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 51,358 psi | 87% | 2720 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,141 psi | 89% | 2746 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 50,763 psi | 86% | 2684 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,858 psi | 71% | 2579 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,869 psi | 63% | 2484 fps | 96% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,079 psi | 80% | 2743 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 49,922 psi | 85% | 2618 fps | 99.7% |
| Bofors RP3 | <<locked>> | 88% | 52,156 psi | 89% | 2644 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 52,286 psi | 89% | 2621 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 82% | 52,141 psi | 89% | 2635 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 52,997 psi | 90% | 2661 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 52,736 psi | 90% | 2713 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 92% | 53,113 psi | 90% | 2674 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 82% | 51,140 psi | 87% | 2618 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 50,908 psi | 87% | 2644 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 50,459 psi | 86% | 2648 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 52,808 psi | 90% | 2743 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,723 psi | 61% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 51,938 psi | 88% | 2615 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 51,227 psi | 87% | 2598 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 51,010 psi | 87% | 2592 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 50,778 psi | 86% | 2572 fps | 97.9% |
| IMR 4350 | <<locked>> | 96% | 52,547 psi | 89% | 2648 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 50,879 psi | 87% | 2602 fps | 97.9% |
| IMR 4831 | <<locked>> | 96% | 50,560 psi | 86% | 2654 fps | 99.7% |
| IMR 4895 | <<locked>> | 84% | 50,256 psi | 86% | 2631 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 52,779 psi | 90% | 2608 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 50,096 psi | 85% | 2582 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,142 psi | 90% | 2585 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 51,024 psi | 87% | 2592 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 50,299 psi | 86% | 2595 fps | 98.9% |
| Lovex S070 | <<locked>> | 94% | 51,068 psi | 87% | 2631 fps | 98.2% |
| Norma 201 | <<locked>> | 84% | 52,417 psi | 89% | 2598 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,156 psi | 90% | 2602 fps | 100% |
| Norma 203B | <<locked>> | 86% | 51,387 psi | 87% | 2638 fps | 100% |
| Norma 204 | <<locked>> | 96% | 52,750 psi | 90% | 2690 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 46,833 psi | 80% | 2697 fps | 97.3% |
| Norma URP | <<locked>> | 96% | 52,475 psi | 89% | 2700 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 51,561 psi | 88% | 2661 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 51,155 psi | 87% | 2697 fps | 98.8% |
| Ramshot TAC | <<locked>> | 82% | 52,692 psi | 90% | 2625 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 52,460 psi | 89% | 2641 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,463 psi | 62% | 1660 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,142 psi | 90% | 2641 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,591 psi | 90% | 2713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 51,779 psi | 88% | 2743 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 49,588 psi | 84% | 2684 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 52,373 psi | 89% | 2759 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 86% | 53,040 psi | 90% | 2602 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 52,025 psi | 89% | 2638 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,487 psi | 84% | 2664 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 92% | 52,286 psi | 89% | 2621 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 50,299 psi | 86% | 2595 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 50,096 psi | 85% | 2582 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 51,024 psi | 87% | 2592 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 51,068 psi | 87% | 2631 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 50,082 psi | 85% | 2644 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 51,300 psi | 87% | 2605 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 52,301 psi | 89% | 2631 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 50,633 psi | 86% | 2497 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 51,068 psi | 87% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 50,125 psi | 85% | 2549 fps | 97.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,023 psi | 83% | 2661 fps | 96.3% |
| Somchem S335 | <<locked>> | 82% | 50,357 psi | 86% | 2500 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 50,821 psi | 87% | 2595 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 52,359 psi | 89% | 2635 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 50,749 psi | 86% | 2703 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,140 psi | 85% | 2648 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 82% | 51,039 psi | 87% | 2484 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 52,953 psi | 90% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 50,328 psi | 86% | 2539 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 50,285 psi | 86% | 2569 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 51,387 psi | 87% | 2648 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 52,968 psi | 90% | 2605 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 51,663 psi | 88% | 2579 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 50,705 psi | 86% | 2654 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,354 psi | 79% | 2648 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 51,155 psi | 87% | 2625 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,098 psi | 90% | 2651 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 52,736 psi | 90% | 2713 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,434 psi | 64% | 2598 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 52,040 psi | 89% | 2635 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 2495 | <<locked>> | 80% | 44,280 psi | 75% | 2448 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,989 psi | 73% | 2428 fps | 95.4% |
| Accurate 3100 | <<locked>> | 94% | 35,795 psi | 61% | 2395 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 41,901 psi | 71% | 2451 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,821 psi | 52% | 2290 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 47,282 psi | 80% | 2552 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 40,408 psi | 69% | 2418 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 98% | 48,515 psi | 83% | 2638 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,327 psi | 84% | 2556 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,381 psi | 74% | 2602 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,892 psi | 82% | 2566 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,234 psi | 68% | 2441 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,960 psi | 73% | 2497 fps | 99.2% |
| Alliant Reloder-16 | 39.4 gr | 80% | 31,241 psi | 53% | 2306 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,693 psi | 59% | 2421 fps | 98.5% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,369 psi | 81% | 2625 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,122 psi | 46% | 2221 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 98% | 34,693 psi | 59% | 2428 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,040 psi | 56% | 2438 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,659 psi | 79% | 2566 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 40,045 psi | 68% | 2448 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 40,741 psi | 69% | 2421 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,689 psi | 83% | 2585 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,625 psi | 69% | 2451 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 86% | 40,350 psi | 69% | 2497 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 86% | 44,092 psi | 75% | 2520 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 47,747 psi | 81% | 2562 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,645 psi | 49% | 2211 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,135 psi | 75% | 2549 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 42,598 psi | 73% | 2566 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 45% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,847 psi | 78% | 2520 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 47,964 psi | 82% | 2552 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,467 psi | 72% | 2451 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,657 psi | 76% | 2470 fps | 96.7% |
| IMR 4350 | <<locked>> | 88% | 41,060 psi | 70% | 2451 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,842 psi | 68% | 2405 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 30,081 psi | 51% | 2257 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 44,005 psi | 75% | 2526 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 49,327 psi | 84% | 2556 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,978 psi | 80% | 2536 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,992 psi | 80% | 2490 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 42,293 psi | 72% | 2448 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 34,940 psi | 59% | 2306 fps | 95.3% |
| Lovex S070 | <<locked>> | 86% | 39,900 psi | 68% | 2431 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 46,557 psi | 79% | 2510 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,862 psi | 80% | 2513 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,308 psi | 72% | 2487 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 46,137 psi | 79% | 2582 fps | 95.1% |
| Norma MRP | <<locked>> | 96% | 40,712 psi | 69% | 2579 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 31,227 psi | 53% | 2293 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 42,163 psi | 72% | 2507 fps | 99.3% |
| Ramshot Hunter | 44.9 gr | 86% | 37,028 psi | 63% | 2438 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 49,313 psi | 84% | 2572 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,052 psi | 84% | 2589 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,122 psi | 46% | 1480 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,031 psi | 70% | 2438 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,803 psi | 78% | 2605 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,927 psi | 63% | 2480 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,706 psi | 56% | 2359 fps | 95.7% |
| ReloadSwiss RS 70 | 45.2 gr | 84% | 34,882 psi | 59% | 2418 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 44,251 psi | 75% | 2464 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 37,637 psi | 64% | 2395 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 98% | 46,311 psi | 79% | 2612 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 40,741 psi | 69% | 2421 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,940 psi | 59% | 2306 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,978 psi | 80% | 2536 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,293 psi | 72% | 2448 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 39,900 psi | 68% | 2431 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,682 psi | 66% | 2444 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,892 psi | 82% | 2552 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,977 psi | 78% | 2530 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,805 psi | 81% | 2457 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,958 psi | 68% | 2336 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 38,870 psi | 66% | 2356 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 45,876 psi | 78% | 2608 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 47,384 psi | 81% | 2457 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,471 psi | 81% | 2543 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 38,464 psi | 65% | 2402 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 27,992 psi | 48% | 2251 fps | 97.6% |
| Somchem S385 | <<locked>> | 94% | 41,118 psi | 70% | 2490 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 48,240 psi | 82% | 2448 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,121 psi | 75% | 2441 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,353 psi | 76% | 2451 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,506 psi | 62% | 2336 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 32,460 psi | 55% | 2293 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 49,719 psi | 85% | 2556 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,685 psi | 73% | 2441 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,010 psi | 54% | 2297 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 86% | 29,182 psi | 50% | 2293 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,184 psi | 55% | 2274 fps | 97.9% |
| Winchester 748 | <<locked>> | 80% | 49,574 psi | 84% | 2598 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,640 psi | 69% | 2503 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,180 psi | 46% | 2297 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,353 psi | 77% | 2533 fps | 99.9% |
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 95 powders for .280 Rem. loaded with the .284 | 161gr | SUS-TAC LRT. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,759 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,759 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 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 161.0 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, Alliant Reloder-16, Ramshot Hunter rank at the top here: for .280 Rem. with the .284 | 161gr | SUS-TAC LRT 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.