Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:170 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:.284 Win. load data
Case Length (l3):2.17"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:66 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:12.5
Load data in caliber .284 Win. with .284 | 170gr | Sierra RN Prohunter bullet and 109 powders. The key underlying parameters are shown in the table above.
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% | 54,317 psi | 85% | 2516 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,941 psi | 88% | 2582 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,617 psi | 76% | 2566 fps | 99.1% |
| Accurate 4064 | <<locked>> | 86% | 54,520 psi | 85% | 2566 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,723 psi | 86% | 2664 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 52,808 psi | 83% | 2743 fps | 97.1% |
| ADI AR 2206H | <<locked>> | 84% | 57,276 psi | 90% | 2638 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,158 psi | 86% | 2598 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,854 psi | 88% | 2703 fps | 98.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,130 psi | 88% | 2585 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,479 psi | 90% | 2762 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,347 psi | 87% | 2615 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,014 psi | 88% | 2641 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,347 psi | 87% | 2713 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,855 psi | 89% | 2743 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,955 psi | 86% | 2694 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,254 psi | 76% | 2635 fps | 97.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,498 psi | 71% | 2582 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,045 psi | 63% | 2507 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,706 psi | 81% | 2756 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,217 psi | 90% | 2657 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 44,396 psi | 70% | 2566 fps | 96.1% |
| Bofors RP3 | <<locked>> | 88% | 56,333 psi | 88% | 2635 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,254 psi | 76% | 2635 fps | 97.2% |
| Bofors RP7 | <<locked>> | 92% | 55,941 psi | 88% | 2621 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,653 psi | 90% | 2566 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,724 psi | 87% | 2618 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,942 psi | 89% | 2651 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 56,927 psi | 89% | 2710 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 92% | 57,290 psi | 90% | 2677 fps | 98.7% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 53,693 psi | 84% | 2644 fps | 96% |
| Hodgdon H4895 | <<locked>> | 82% | 54,520 psi | 85% | 2598 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,651 psi | 87% | 2641 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,172 psi | 85% | 2631 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 57,261 psi | 90% | 2753 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 56% | 1585 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,564 psi | 87% | 2602 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,143 psi | 86% | 2575 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,665 psi | 86% | 2582 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,406 psi | 90% | 2615 fps | 99.4% |
| IMR 4350 | <<locked>> | 96% | 56,289 psi | 88% | 2648 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,638 psi | 90% | 2644 fps | 99.4% |
| IMR 4831 | <<locked>> | 96% | 55,071 psi | 86% | 2654 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,450 psi | 90% | 2667 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 55,463 psi | 87% | 2635 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 82% | 56,130 psi | 88% | 2585 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,551 psi | 90% | 2612 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,188 psi | 88% | 2566 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,433 psi | 85% | 2572 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,246 psi | 90% | 2638 fps | 99.9% |
| Lovex S070 | <<locked>> | 94% | 54,853 psi | 86% | 2628 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,379 psi | 63% | 2428 fps | 97.7% |
| Norma 201 | <<locked>> | 84% | 56,130 psi | 88% | 2585 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,666 psi | 89% | 2579 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,259 psi | 87% | 2628 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,145 psi | 90% | 2697 fps | 98.3% |
| Norma MRPᴾ | <<locked>> | 100% | 51,097 psi | 80% | 2713 fps | 98.9% |
| Norma URP | <<locked>> | 96% | 57,130 psi | 90% | 2700 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,622 psi | 87% | 2651 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,651 psi | 87% | 2700 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 42,032 psi | 66% | 2503 fps | 96.1% |
| Ramshot TAC | <<locked>> | 82% | 56,202 psi | 88% | 2618 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,231 psi | 88% | 2628 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,854 psi | 58% | 1627 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,826 psi | 89% | 2635 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,637 psi | 89% | 2700 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,449 psi | 88% | 2736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,331 psi | 85% | 2687 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,782 psi | 89% | 2762 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 57,043 psi | 89% | 2559 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,797 psi | 89% | 2585 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,188 psi | 88% | 2628 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,508 psi | 90% | 2671 fps | 97.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,041 psi | 85% | 2677 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 92% | 55,941 psi | 88% | 2621 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,246 psi | 90% | 2638 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,551 psi | 90% | 2612 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,433 psi | 85% | 2572 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,853 psi | 86% | 2628 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,389 psi | 85% | 2638 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,042 psi | 86% | 2598 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,666 psi | 87% | 2612 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,276 psi | 90% | 2520 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,317 psi | 85% | 2477 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,406 psi | 90% | 2598 fps | 99.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,534 psi | 84% | 2674 fps | 98.1% |
| Somchem S335 | <<locked>> | 84% | 56,739 psi | 89% | 2516 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,563 psi | 86% | 2585 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,231 psi | 88% | 2625 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 55,811 psi | 87% | 2618 fps | 96.4% |
| Somchem S365 | <<locked>> | 98% | 55,854 psi | 88% | 2697 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,549 psi | 85% | 2654 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 84% | 57,667 psi | 90% | 2500 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,724 psi | 89% | 2543 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,363 psi | 90% | 2562 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 57,566 psi | 90% | 2598 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,811 psi | 87% | 2644 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,166 psi | 74% | 2530 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 82% | 56,724 psi | 89% | 2589 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,332 psi | 87% | 2559 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,679 psi | 86% | 2651 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,792 psi | 80% | 2651 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 51,764 psi | 81% | 2703 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,216 psi | 87% | 2615 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,188 psi | 90% | 2635 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,261 psi | 90% | 2717 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,872 psi | 64% | 2625 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,898 psi | 88% | 2621 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,053 psi | 80% | 2595 fps | 97.4% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 47,805 psi | 75% | 2431 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,137 psi | 72% | 2431 fps | 97.2% |
| Accurate 3100 | <<locked>> | 88% | 32,343 psi | 51% | 2264 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 45,281 psi | 71% | 2438 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,939 psi | 53% | 2310 fps | 97.5% |
| Accurate High Country | <<locked>> | 96% | 45,788 psi | 72% | 2628 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 50,749 psi | 80% | 2546 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,192 psi | 68% | 2415 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 43,178 psi | 68% | 2493 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,852 psi | 83% | 2543 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,659 psi | 73% | 2598 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,250 psi | 68% | 2434 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,340 psi | 73% | 2497 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,620 psi | 53% | 2320 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,681 psi | 59% | 2434 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 42,467 psi | 67% | 2484 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 42,337 psi | 66% | 2530 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,092 psi | 41% | 2146 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,228 psi | 52% | 2349 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 84% | 29,544 psi | 46% | 2297 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,169 psi | 79% | 2559 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 41,742 psi | 65% | 2516 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 43,265 psi | 68% | 2441 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 42,337 psi | 66% | 2530 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 38,479 psi | 60% | 2323 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,012 psi | 85% | 2520 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,127 psi | 82% | 2569 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,918 psi | 69% | 2454 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 35,853 psi | 56% | 2346 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 82% | 41,756 psi | 65% | 2421 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 98% | 50,053 psi | 78% | 2589 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 51,329 psi | 80% | 2556 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,024 psi | 49% | 2221 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,558 psi | 75% | 2536 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 37,492 psi | 59% | 2411 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 42% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,892 psi | 77% | 2507 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,692 psi | 81% | 2533 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,411 psi | 71% | 2444 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,659 psi | 75% | 2467 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 38,899 psi | 61% | 2356 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,958 psi | 63% | 2356 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 32,779 psi | 51% | 2267 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 47,529 psi | 74% | 2523 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 48,820 psi | 77% | 2533 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 52,852 psi | 83% | 2543 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,502 psi | 79% | 2520 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,864 psi | 78% | 2474 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,266 psi | 71% | 2438 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,492 psi | 59% | 2310 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 35,592 psi | 56% | 2287 fps | 95.4% |
| Lovex S071 | <<locked>> | 94% | 33,199 psi | 52% | 2283 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 49,705 psi | 78% | 2497 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,154 psi | 79% | 2493 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,716 psi | 72% | 2487 fps | 100% |
| Norma 204 | <<locked>> | 88% | 43,816 psi | 69% | 2487 fps | 95.6% |
| Norma MRP | <<locked>> | 90% | 36,419 psi | 57% | 2434 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 33,939 psi | 53% | 2303 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 45,397 psi | 71% | 2500 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 80% | 32,953 psi | 52% | 2290 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 98% | 39,117 psi | 61% | 2444 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 52,678 psi | 83% | 2566 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,649 psi | 83% | 2579 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,354 psi | 43% | 1450 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,888 psi | 69% | 2434 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,516 psi | 78% | 2598 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,074 psi | 63% | 2484 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,431 psi | 52% | 2320 fps | 97% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 32,938 psi | 52% | 2323 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 80% | 53,708 psi | 84% | 2516 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,311 psi | 74% | 2451 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,741 psi | 64% | 2392 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 47,674 psi | 75% | 2523 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 41,466 psi | 65% | 2470 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 38,479 psi | 60% | 2323 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,492 psi | 59% | 2310 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,502 psi | 79% | 2520 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,266 psi | 71% | 2438 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 35,592 psi | 56% | 2287 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,698 psi | 65% | 2441 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,430 psi | 81% | 2549 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,081 psi | 77% | 2520 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,517 psi | 79% | 2431 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,482 psi | 67% | 2316 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 36,724 psi | 58% | 2260 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 41,075 psi | 64% | 2464 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 50,386 psi | 79% | 2434 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,053 psi | 80% | 2536 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,379 psi | 65% | 2395 fps | 99.9% |
| Somchem S361 | <<locked>> | 96% | 52,199 psi | 82% | 2566 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 30,443 psi | 48% | 2264 fps | 99.2% |
| Somchem S385 | <<locked>> | 90% | 39,421 psi | 62% | 2405 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 51,010 psi | 80% | 2418 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,195 psi | 74% | 2418 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,485 psi | 74% | 2431 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,305 psi | 62% | 2333 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,418 psi | 56% | 2306 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 38,827 psi | 61% | 2382 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 52,997 psi | 83% | 2539 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,919 psi | 72% | 2431 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,896 psi | 55% | 2306 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 26,513 psi | 42% | 2165 fps | 95.2% |
| Vihtavuori N560 | <<locked>> | 98% | 48,312 psi | 76% | 2644 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,664 psi | 54% | 2280 fps | 99.3% |
| Winchester 748 | <<locked>> | 80% | 53,461 psi | 84% | 2585 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 36,085 psi | 57% | 2352 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 24,381 psi | 38% | 2162 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,878 psi | 77% | 2526 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 41,742 psi | 65% | 2441 fps | 95.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 109 powders for .284 Win. loaded with the .284 | 170gr | Sierra RN Prohunter. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,762 fps; across all powders the maximum-charge window runs from 1,585 fps to 2,762 fps. Accurate 3100 gives the best case fill at 100 %, and 109 of the 109 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.