Load Specifications
Load data in caliber .280 Rem. with .284 | 160gr | Peregrine Glider GRM bullet and 98 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>> | 86% | 51,329 psi | 87% | 2566 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 51,039 psi | 87% | 2579 fps | 97.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,308 psi | 72% | 2533 fps | 97.2% |
| Accurate 4064 | <<locked>> | 88% | 51,605 psi | 88% | 2615 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 51,474 psi | 88% | 2700 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 52,431 psi | 89% | 2651 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 50,299 psi | 86% | 2605 fps | 99.8% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 50,372 psi | 86% | 2684 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 51,517 psi | 88% | 2602 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 52,214 psi | 89% | 2572 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 51,837 psi | 88% | 2759 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 50,096 psi | 85% | 2680 fps | 96.2% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 50,096 psi | 85% | 2680 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 50,285 psi | 86% | 2625 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 50,647 psi | 86% | 2644 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 49,980 psi | 85% | 2710 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 50,662 psi | 86% | 2740 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 49,356 psi | 84% | 2674 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,451 psi | 69% | 2566 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,411 psi | 77% | 2726 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 52,054 psi | 89% | 2664 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 50,444 psi | 86% | 2638 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 50,836 psi | 87% | 2612 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 52,939 psi | 90% | 2582 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 50,604 psi | 86% | 2628 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 51,459 psi | 88% | 2651 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 51,227 psi | 87% | 2703 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 92% | 51,793 psi | 88% | 2664 fps | 97% |
| Hodgdon H4895 | <<locked>> | 84% | 52,953 psi | 90% | 2657 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,837 psi | 90% | 2687 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 52,286 psi | 89% | 2690 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 51,329 psi | 87% | 2733 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,462 psi | 60% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 50,676 psi | 86% | 2612 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 52,837 psi | 90% | 2638 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 52,982 psi | 90% | 2635 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 52,707 psi | 90% | 2615 fps | 98.2% |
| IMR 4350 | <<locked>> | 96% | 51,227 psi | 87% | 2641 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 52,779 psi | 90% | 2644 fps | 98.2% |
| IMR 4831 | <<locked>> | 98% | 52,257 psi | 89% | 2697 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 51,967 psi | 88% | 2671 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 51,517 psi | 88% | 2602 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 52,025 psi | 89% | 2625 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 51,909 psi | 88% | 2579 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 52,721 psi | 90% | 2631 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 51,967 psi | 88% | 2638 fps | 99.1% |
| Lovex S070 | <<locked>> | 96% | 52,794 psi | 90% | 2671 fps | 98.5% |
| Norma 201 | <<locked>> | 84% | 50,879 psi | 87% | 2592 fps | 100% |
| Norma 202 | <<locked>> | 84% | 51,735 psi | 88% | 2598 fps | 100% |
| Norma 203B | <<locked>> | 86% | 49,922 psi | 85% | 2631 fps | 100% |
| Norma 204 | <<locked>> | 96% | 51,343 psi | 87% | 2680 fps | 96.3% |
| Norma MRPᴾ | <<locked>> | 100% | 45,281 psi | 77% | 2684 fps | 96.8% |
| Norma URP | <<locked>> | 96% | 50,952 psi | 87% | 2690 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 50,111 psi | 85% | 2651 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 49,676 psi | 85% | 2687 fps | 98.6% |
| Ramshot TAC | <<locked>> | 82% | 51,387 psi | 87% | 2618 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 51,097 psi | 87% | 2635 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,143 psi | 62% | 1663 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 51,750 psi | 88% | 2635 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 51,039 psi | 87% | 2703 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 50,299 psi | 86% | 2736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 51,532 psi | 88% | 2726 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 50,937 psi | 87% | 2753 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 82% | 51,938 psi | 88% | 2575 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 51,474 psi | 88% | 2595 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 50,343 psi | 86% | 2628 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 47,964 psi | 82% | 2654 fps | 96% |
| Rottweil R 907 | <<locked>> | 92% | 50,836 psi | 87% | 2612 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 51,967 psi | 88% | 2638 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 52,025 psi | 89% | 2625 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 52,721 psi | 90% | 2631 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 52,794 psi | 90% | 2671 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 52,199 psi | 89% | 2690 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 49,806 psi | 85% | 2598 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 50,923 psi | 87% | 2625 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 52,692 psi | 90% | 2539 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 52,794 psi | 90% | 2539 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 51,895 psi | 88% | 2592 fps | 98.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 47,514 psi | 81% | 2648 fps | 95.9% |
| Somchem S335 | <<locked>> | 84% | 51,793 psi | 88% | 2536 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 52,997 psi | 90% | 2641 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 50,763 psi | 86% | 2628 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,504 psi | 89% | 2743 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,501 psi | 83% | 2635 fps | 97% |
| Vihtavuori N133 | <<locked>> | 84% | 53,084 psi | 90% | 2526 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 51,387 psi | 87% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 52,170 psi | 89% | 2579 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 52,083 psi | 89% | 2608 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 49,908 psi | 85% | 2638 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 82% | 51,619 psi | 88% | 2598 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 50,241 psi | 86% | 2572 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 52,373 psi | 89% | 2694 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,556 psi | 76% | 2635 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 49,806 psi | 85% | 2618 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 51,677 psi | 88% | 2644 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 51,227 psi | 87% | 2703 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,940 psi | 61% | 2575 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 84% | 50,589 psi | 86% | 2628 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% | 42,250 psi | 72% | 2434 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 44,701 psi | 76% | 2474 fps | 95.8% |
| Accurate 3100 | <<locked>> | 96% | 36,564 psi | 62% | 2425 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 40,030 psi | 68% | 2434 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 31,546 psi | 54% | 2326 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 45,934 psi | 78% | 2546 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 39,247 psi | 67% | 2411 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 98% | 47,195 psi | 80% | 2628 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,051 psi | 82% | 2549 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 48,776 psi | 83% | 2530 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,119 psi | 72% | 2589 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 47,007 psi | 80% | 2628 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 47,007 psi | 80% | 2628 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,841 psi | 66% | 2431 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,539 psi | 71% | 2487 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,097 psi | 55% | 2343 fps | 95.8% |
| Alliant Reloder-17 | 42.4 gr | 80% | 33,417 psi | 57% | 2405 fps | 98.1% |
| Alliant Reloder-19 | <<locked>> | 98% | 46,340 psi | 79% | 2621 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 88% | 27,572 psi | 47% | 2251 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 33,953 psi | 58% | 2477 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,353 psi | 77% | 2556 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 38,406 psi | 65% | 2431 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 42,018 psi | 72% | 2461 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,763 psi | 85% | 2536 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,181 psi | 80% | 2575 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,189 psi | 67% | 2438 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 86% | 38,986 psi | 66% | 2484 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 88% | 45,658 psi | 78% | 2562 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 46,354 psi | 79% | 2556 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,427 psi | 47% | 2192 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,772 psi | 73% | 2536 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 41,249 psi | 70% | 2549 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,368 psi | 45% | 1447 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,628 psi | 76% | 2513 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 46,470 psi | 79% | 2546 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,234 psi | 70% | 2441 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,439 psi | 74% | 2461 fps | 96.3% |
| IMR 4350 | <<locked>> | 90% | 42,409 psi | 72% | 2490 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,176 psi | 70% | 2444 fps | 95.6% |
| IMR 4831 | <<locked>> | 82% | 30,719 psi | 52% | 2290 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 42,583 psi | 72% | 2516 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 48,051 psi | 82% | 2549 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,324 psi | 77% | 2526 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,093 psi | 78% | 2490 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 41,089 psi | 70% | 2444 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 35,839 psi | 61% | 2343 fps | 95.5% |
| Lovex S070 | <<locked>> | 86% | 38,435 psi | 65% | 2418 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 45,034 psi | 77% | 2500 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,484 psi | 77% | 2503 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,915 psi | 70% | 2477 fps | 99.2% |
| Norma 204 | <<locked>> | 94% | 48,109 psi | 82% | 2628 fps | 95.5% |
| Norma MRP | <<locked>> | 98% | 42,148 psi | 72% | 2621 fps | 95.9% |
| Norma URP | <<locked>> | 82% | 31,995 psi | 54% | 2329 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 40,785 psi | 69% | 2493 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 38,058 psi | 65% | 2470 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 48,037 psi | 82% | 2566 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,703 psi | 81% | 2582 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,803 psi | 46% | 1483 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,711 psi | 68% | 2425 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,338 psi | 75% | 2595 fps | 99.4% |
| ReloadSwiss RS 60 | 42.4 gr | 80% | 35,607 psi | 61% | 2467 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 31,256 psi | 53% | 2339 fps | 95% |
| ReloadSwiss RS 70 | 45.2 gr | 84% | 33,605 psi | 57% | 2398 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 48,747 psi | 83% | 2530 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,757 psi | 73% | 2454 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 36,085 psi | 61% | 2379 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 98% | 44,860 psi | 76% | 2602 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 86% | 42,018 psi | 72% | 2461 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,839 psi | 61% | 2343 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,324 psi | 77% | 2526 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,089 psi | 70% | 2444 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 38,435 psi | 65% | 2418 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,318 psi | 64% | 2431 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,398 psi | 79% | 2543 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,643 psi | 76% | 2523 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,514 psi | 79% | 2451 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,769 psi | 66% | 2329 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 39,987 psi | 68% | 2392 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 44,440 psi | 76% | 2595 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 46,006 psi | 78% | 2451 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,137 psi | 79% | 2536 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 36,999 psi | 63% | 2385 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 26,672 psi | 45% | 2228 fps | 96.9% |
| Somchem S385 | <<locked>> | 96% | 42,554 psi | 72% | 2530 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 46,963 psi | 80% | 2441 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,627 psi | 73% | 2434 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,018 psi | 73% | 2444 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,128 psi | 60% | 2323 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 31,183 psi | 53% | 2277 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 48,356 psi | 82% | 2549 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,336 psi | 70% | 2434 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 32,982 psi | 56% | 2336 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 88% | 29,646 psi | 50% | 2323 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,024 psi | 53% | 2260 fps | 97.4% |
| Winchester 748 | <<locked>> | 80% | 48,124 psi | 82% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 39,233 psi | 67% | 2487 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 92% | 27,572 psi | 47% | 2323 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,990 psi | 75% | 2523 fps | 99.8% |
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 98 powders for .280 Rem. loaded with the .284 | 160gr | Peregrine Glider GRM. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,759 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,759 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 160.0 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 Power Pro Varmint 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 | 160gr | Peregrine Glider GRM 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.