Load Specifications
Bullet Manufacturer:North Fork
Bullet Weight:160 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:1:11.5
Load data in caliber .284 Win. with .284 | 160gr | North Fork FPS bullet and 103 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 2015 | <<locked>> | 82% | 55,085 psi | 86% | 2566 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,201 psi | 85% | 2592 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,651 psi | 87% | 2657 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,304 psi | 88% | 2651 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,744 psi | 70% | 2572 fps | 97.9% |
| Accurate 4064 | <<locked>> | 88% | 54,346 psi | 85% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,041 psi | 85% | 2730 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 54,433 psi | 85% | 2674 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,434 psi | 87% | 2677 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,301 psi | 82% | 2713 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,782 psi | 89% | 2671 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,462 psi | 85% | 2592 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,896 psi | 84% | 2789 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,724 psi | 87% | 2697 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,086 psi | 88% | 2717 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,347 psi | 87% | 2789 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,710 psi | 89% | 2818 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,314 psi | 80% | 2703 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,438 psi | 67% | 2598 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,304 psi | 58% | 2503 fps | 96.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,674 psi | 75% | 2762 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,696 psi | 90% | 2740 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 56,275 psi | 88% | 2710 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,883 psi | 88% | 2687 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,708 psi | 86% | 2602 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,115 psi | 88% | 2697 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 57,101 psi | 89% | 2726 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 96% | 56,855 psi | 89% | 2782 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 94% | 57,145 psi | 90% | 2743 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 84% | 54,984 psi | 86% | 2680 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,071 psi | 86% | 2710 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,389 psi | 85% | 2713 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 57,261 psi | 90% | 2822 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 56% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,883 psi | 88% | 2680 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,085 psi | 86% | 2657 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,926 psi | 86% | 2657 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,491 psi | 85% | 2641 fps | 98.6% |
| IMR 4350 | <<locked>> | 98% | 56,449 psi | 88% | 2717 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,592 psi | 86% | 2671 fps | 98.6% |
| IMR 4831 | <<locked>> | 98% | 54,549 psi | 85% | 2723 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 57,537 psi | 90% | 2743 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,782 psi | 89% | 2671 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,389 psi | 85% | 2648 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,000 psi | 89% | 2648 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,926 psi | 86% | 2654 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 57,450 psi | 90% | 2710 fps | 99.7% |
| Lovex S070 | <<locked>> | 96% | 54,998 psi | 86% | 2697 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,101 psi | 58% | 2428 fps | 95.9% |
| Norma 201 | <<locked>> | 86% | 56,391 psi | 88% | 2664 fps | 100% |
| Norma 202 | <<locked>> | 86% | 57,232 psi | 90% | 2664 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,303 psi | 87% | 2703 fps | 100% |
| Norma 204 | <<locked>> | 98% | 57,261 psi | 90% | 2766 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 47,413 psi | 74% | 2720 fps | 97.6% |
| Norma URP | <<locked>> | 98% | 56,681 psi | 89% | 2769 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 55,840 psi | 88% | 2730 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,506 psi | 87% | 2772 fps | 99.4% |
| Ramshot TAC | <<locked>> | 84% | 56,811 psi | 89% | 2694 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,724 psi | 89% | 2710 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,145 psi | 90% | 2671 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,318 psi | 57% | 1663 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,072 psi | 89% | 2710 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,811 psi | 89% | 2782 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,231 psi | 88% | 2812 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 57,537 psi | 90% | 2805 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,797 psi | 89% | 2838 fps | 100% |
| Rottweil R 901 | <<locked>> | 84% | 57,334 psi | 90% | 2641 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 57,043 psi | 89% | 2664 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,159 psi | 88% | 2703 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 54,215 psi | 85% | 2687 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,096 psi | 79% | 2687 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 94% | 55,883 psi | 88% | 2687 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 57,450 psi | 90% | 2710 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,389 psi | 85% | 2648 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,926 psi | 86% | 2654 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,998 psi | 86% | 2697 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,288 psi | 85% | 2713 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,550 psi | 87% | 2677 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,144 psi | 88% | 2694 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,259 psi | 85% | 2552 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,694 psi | 86% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,925 psi | 85% | 2618 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,603 psi | 78% | 2680 fps | 96.6% |
| Somchem S335 | <<locked>> | 86% | 57,130 psi | 90% | 2595 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,027 psi | 86% | 2664 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,333 psi | 88% | 2700 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,969 psi | 86% | 2769 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,734 psi | 80% | 2664 fps | 97.6% |
| Vihtavuori N130 | <<locked>> | 82% | 57,479 psi | 90% | 2556 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 54,607 psi | 86% | 2539 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 57,174 psi | 90% | 2625 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 57,624 psi | 90% | 2641 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,725 psi | 90% | 2677 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,477 psi | 87% | 2713 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 57,087 psi | 89% | 2667 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,840 psi | 88% | 2641 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,607 psi | 86% | 2723 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,007 psi | 74% | 2671 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,695 psi | 87% | 2694 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 57,203 psi | 90% | 2713 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,188 psi | 90% | 2785 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,869 psi | 59% | 2621 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,985 psi | 88% | 2700 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 52,054 psi | 82% | 2526 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,614 psi | 70% | 2461 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,953 psi | 81% | 2608 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,511 psi | 68% | 2448 fps | 95.7% |
| Accurate 3100 | <<locked>> | 94% | 36,332 psi | 57% | 2411 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 42,235 psi | 66% | 2464 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,285 psi | 49% | 2310 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 47,819 psi | 75% | 2572 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 40,654 psi | 64% | 2434 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 46,050 psi | 72% | 2605 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,893 psi | 78% | 2572 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,966 psi | 80% | 2549 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,961 psi | 69% | 2621 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,770 psi | 64% | 2461 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,482 psi | 68% | 2516 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,647 psi | 50% | 2326 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,157 psi | 55% | 2441 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 45,092 psi | 71% | 2595 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,485 psi | 43% | 2241 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,099 psi | 55% | 2448 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,475 psi | 52% | 2461 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,239 psi | 74% | 2582 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 40,611 psi | 64% | 2467 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 41,234 psi | 65% | 2441 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,517 psi | 81% | 2556 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,269 psi | 77% | 2602 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,162 psi | 65% | 2470 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 38,377 psi | 60% | 2467 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 86% | 44,382 psi | 70% | 2536 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 48,341 psi | 76% | 2582 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,037 psi | 46% | 2231 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,469 psi | 70% | 2562 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 40,234 psi | 63% | 2526 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,774 psi | 42% | 1453 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,369 psi | 73% | 2536 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 48,617 psi | 76% | 2569 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,728 psi | 67% | 2464 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,121 psi | 71% | 2487 fps | 97% |
| IMR 4350 | <<locked>> | 88% | 41,292 psi | 65% | 2467 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,059 psi | 63% | 2418 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 30,545 psi | 48% | 2277 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 44,585 psi | 70% | 2546 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 49,893 psi | 78% | 2572 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,601 psi | 75% | 2552 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,500 psi | 74% | 2507 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 42,801 psi | 67% | 2467 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,157 psi | 55% | 2320 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 37,971 psi | 60% | 2402 fps | 95.2% |
| Lovex S071 | <<locked>> | 98% | 34,940 psi | 55% | 2385 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 46,818 psi | 73% | 2523 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,456 psi | 74% | 2530 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,873 psi | 67% | 2507 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 46,659 psi | 73% | 2602 fps | 95.4% |
| Norma MRP | <<locked>> | 96% | 41,524 psi | 65% | 2605 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 31,691 psi | 50% | 2313 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 42,714 psi | 67% | 2526 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 37,507 psi | 59% | 2454 fps | 95.9% |
| Ramshot TAC | <<locked>> | 80% | 49,864 psi | 78% | 2592 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,588 psi | 78% | 2608 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,896 psi | 84% | 2625 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 43% | 1490 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,553 psi | 65% | 2454 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,166 psi | 72% | 2621 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,391 psi | 59% | 2500 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,096 psi | 49% | 2326 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 33,170 psi | 52% | 2385 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 51,068 psi | 80% | 2552 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,802 psi | 70% | 2484 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,189 psi | 60% | 2415 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 98% | 50,879 psi | 80% | 2638 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 96% | 43,976 psi | 69% | 2579 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 41,234 psi | 65% | 2441 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,157 psi | 55% | 2320 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,601 psi | 75% | 2552 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,801 psi | 67% | 2467 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 37,971 psi | 60% | 2402 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,943 psi | 61% | 2457 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,457 psi | 76% | 2569 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,209 psi | 72% | 2543 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,066 psi | 75% | 2467 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,234 psi | 63% | 2346 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,073 psi | 61% | 2365 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 43,569 psi | 68% | 2575 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 47,616 psi | 75% | 2467 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,066 psi | 75% | 2562 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 38,725 psi | 61% | 2415 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 28,384 psi | 44% | 2270 fps | 97.9% |
| Somchem S385 | <<locked>> | 94% | 41,640 psi | 65% | 2510 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 54,056 psi | 85% | 2513 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,486 psi | 76% | 2457 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,411 psi | 70% | 2454 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,904 psi | 70% | 2467 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,999 psi | 58% | 2356 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 32,924 psi | 52% | 2313 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 80% | 50,314 psi | 79% | 2575 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,221 psi | 68% | 2461 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,474 psi | 51% | 2316 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 86% | 29,646 psi | 46% | 2313 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,547 psi | 51% | 2293 fps | 98.1% |
| Winchester 748 | <<locked>> | 80% | 50,154 psi | 79% | 2615 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 38,377 psi | 60% | 2467 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,528 psi | 43% | 2320 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,919 psi | 72% | 2549 fps | 99.9% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 120 powders for .284 Win. loaded with the .284 | 160gr | North Fork FPS. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,838 fps; across all powders the maximum-charge window runs from 1,627 fps to 2,838 fps. Accurate 3100 gives the best case fill at 100 %, and 120 of the 120 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 160.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.