Load Specifications
Bullet:.284 | 139gr | Hornady SST
Bullet Manufacturer:Hornady
Bullet Weight:139 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:1:10.5
Load data in caliber .284 Win. with .284 | 139gr | Hornady SST bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and Alliant Reloder-17.
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>> | 86% | 56,840 psi | 89% | 2782 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,071 psi | 86% | 2805 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,100 psi | 86% | 2805 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,363 psi | 90% | 2874 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,621 psi | 86% | 2799 fps | 96.5% |
| Accurate 4064 | <<locked>> | 92% | 54,984 psi | 86% | 2848 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,549 psi | 85% | 2927 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 55,796 psi | 87% | 2884 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 56,898 psi | 89% | 2881 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,955 psi | 86% | 2835 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,361 psi | 87% | 2808 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,608 psi | 89% | 2940 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,303 psi | 87% | 2999 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,724 psi | 89% | 2904 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,463 psi | 88% | 2785 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,145 psi | 90% | 2923 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,649 psi | 83% | 2930 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 98% | 57,682 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,507 psi | 59% | 2657 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,814 psi | 66% | 2812 fps | 96.9% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,550 psi | 87% | 2897 fps | 99.6% |
| Bofors RP3 | <<locked>> | 94% | 57,392 psi | 90% | 2920 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,566 psi | 90% | 2887 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,652 psi | 89% | 2818 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,983 psi | 85% | 2861 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,970 psi | 88% | 2963 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 55,521 psi | 87% | 2828 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,579 psi | 89% | 2854 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,926 psi | 86% | 2881 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 98% | 54,027 psi | 85% | 2923 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 96% | 54,940 psi | 86% | 2884 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 88% | 56,362 psi | 88% | 2894 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,921 psi | 77% | 2808 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,738 psi | 87% | 2927 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,129 psi | 86% | 2959 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,244 psi | 55% | 1739 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,740 psi | 90% | 2897 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,260 psi | 88% | 2877 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,420 psi | 88% | 2864 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,579 psi | 89% | 2844 fps | 97.6% |
| IMR 4198 | <<locked>> | 82% | 56,246 psi | 88% | 2743 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,244 psi | 85% | 2858 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,941 psi | 88% | 2864 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,648 psi | 81% | 2864 fps | 99.2% |
| IMR 4895 | <<locked>> | 90% | 55,100 psi | 86% | 2904 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 54,955 psi | 86% | 2835 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,085 psi | 86% | 2822 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,593 psi | 87% | 2861 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,535 psi | 87% | 2812 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 56,101 psi | 88% | 2861 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,071 psi | 86% | 2854 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,072 psi | 88% | 2890 fps | 97.8% |
| Norma 201 | <<locked>> | 88% | 54,491 psi | 85% | 2828 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,158 psi | 86% | 2831 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,304 psi | 88% | 2910 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 53,824 psi | 84% | 2917 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 92% | 57,145 psi | 90% | 2940 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,620 psi | 82% | 2910 fps | 98% |
| Ramshot TAC | <<locked>> | 86% | 55,143 psi | 86% | 2851 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,723 psi | 86% | 2871 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,999 psi | 88% | 2838 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,868 psi | 56% | 1785 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,505 psi | 85% | 2818 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,100 psi | 86% | 2858 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,244 psi | 85% | 2940 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,363 psi | 90% | 3028 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,360 psi | 85% | 2949 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,404 psi | 85% | 2976 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 55,651 psi | 87% | 2812 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,129 psi | 86% | 2828 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,246 psi | 90% | 2910 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 57,566 psi | 90% | 2887 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,071 psi | 86% | 2854 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,593 psi | 87% | 2861 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,101 psi | 88% | 2861 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,072 psi | 88% | 2890 fps | 97.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,740 psi | 90% | 2838 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,187 psi | 86% | 2917 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,450 psi | 90% | 2812 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,392 psi | 90% | 2884 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 57,682 psi | 90% | 2904 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,376 psi | 88% | 2769 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,434 psi | 88% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,593 psi | 87% | 2808 fps | 97.4% |
| Somchem S321 | <<locked>> | 84% | 56,072 psi | 88% | 2867 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,405 psi | 87% | 2766 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,739 psi | 89% | 2874 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 57,305 psi | 90% | 2904 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,269 psi | 76% | 2867 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,883 psi | 88% | 2733 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,565 psi | 89% | 2756 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,534 psi | 85% | 2792 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,477 psi | 87% | 2808 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,579 psi | 87% | 2838 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,318 psi | 88% | 2910 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 55,535 psi | 87% | 2838 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,377 psi | 90% | 2854 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 2920 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,596 psi | 64% | 2733 fps | 97.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,029 psi | 89% | 2890 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,042 psi | 86% | 2881 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,331 psi | 85% | 2927 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,518 psi | 53% | 2641 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 90% | 57,624 psi | 90% | 2913 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 2015 | <<locked>> | 80% | 47,079 psi | 74% | 2644 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,750 psi | 81% | 2759 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,784 psi | 62% | 2566 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,586 psi | 73% | 2717 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 48,037 psi | 75% | 2690 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 37,608 psi | 59% | 2559 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 36,056 psi | 56% | 2589 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 43,395 psi | 68% | 2671 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 36,912 psi | 58% | 2520 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,440 psi | 71% | 2680 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 45,629 psi | 72% | 2674 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,098 psi | 83% | 2887 fps | 99.9% |
| Alliant Power Pro 2000-MR | 43.6 gr | 80% | 39,407 psi | 62% | 2694 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,347 psi | 57% | 2539 fps | 98% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,997 psi | 83% | 2740 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,146 psi | 61% | 2605 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,332 psi | 57% | 2598 fps | 95.8% |
| Alliant Reloder-17 | 42.9 gr | 80% | 31,415 psi | 49% | 2497 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,212 psi | 49% | 2493 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,957 psi | 61% | 2746 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,482 psi | 67% | 2671 fps | 97.6% |
| Bofors RP3 | <<locked>> | 80% | 36,100 psi | 57% | 2546 fps | 98.1% |
| Bofors RP7 | <<locked>> | 92% | 47,790 psi | 75% | 2726 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,297 psi | 74% | 2671 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,222 psi | 69% | 2703 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,660 psi | 76% | 2844 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 80% | 52,127 psi | 82% | 2779 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,895 psi | 83% | 2802 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,941 psi | 58% | 2546 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 92% | 44,396 psi | 70% | 2753 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 94% | 51,634 psi | 81% | 2831 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 43,758 psi | 69% | 2684 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,227 psi | 49% | 2441 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,624 psi | 62% | 2651 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 94% | 47,703 psi | 75% | 2831 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,324 psi | 41% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,119 psi | 66% | 2638 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 43,265 psi | 68% | 2680 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,754 psi | 61% | 2552 fps | 97.3% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,891 psi | 73% | 2684 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 53,127 psi | 83% | 2700 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 47,645 psi | 75% | 2746 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,688 psi | 73% | 2710 fps | 95.5% |
| IMR 4831 | <<locked>> | 88% | 34,896 psi | 55% | 2543 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 40,074 psi | 63% | 2635 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 80% | 45,440 psi | 71% | 2680 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 51,445 psi | 81% | 2766 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,554 psi | 67% | 2654 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,569 psi | 68% | 2612 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 38,682 psi | 61% | 2559 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 40,611 psi | 64% | 2598 fps | 95.5% |
| Lovex S070 | <<locked>> | 92% | 43,569 psi | 68% | 2677 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 42,511 psi | 67% | 2625 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 42,656 psi | 67% | 2635 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,551 psi | 60% | 2595 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 36,405 psi | 57% | 2589 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 38,072 psi | 60% | 2605 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 92% | 40,654 psi | 64% | 2684 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 45,339 psi | 71% | 2684 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,802 psi | 70% | 2703 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,182 psi | 77% | 2733 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,731 psi | 42% | 1594 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,952 psi | 80% | 2762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,641 psi | 67% | 2638 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,857 psi | 64% | 2703 fps | 97.8% |
| ReloadSwiss RS 60 | 42.9 gr | 80% | 33,475 psi | 52% | 2569 fps | 98.9% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,969 psi | 56% | 2605 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 38,638 psi | 61% | 2667 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 46,615 psi | 73% | 2674 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,408 psi | 63% | 2575 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 33,939 psi | 53% | 2490 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 92% | 47,790 psi | 75% | 2726 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,611 psi | 64% | 2598 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,554 psi | 67% | 2654 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,682 psi | 61% | 2559 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 92% | 43,569 psi | 68% | 2677 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,954 psi | 85% | 2785 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,722 psi | 54% | 2533 fps | 96.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,896 psi | 84% | 2762 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,627 psi | 68% | 2657 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,785 psi | 65% | 2638 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,019 psi | 69% | 2585 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,521 psi | 57% | 2451 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 45,890 psi | 72% | 2654 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 49,066 psi | 77% | 2759 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,511 psi | 68% | 2585 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,250 psi | 68% | 2654 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 34,751 psi | 54% | 2493 fps | 97.1% |
| Somchem S365 | <<locked>> | 82% | 26,861 psi | 42% | 2369 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 49,676 psi | 78% | 2644 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,280 psi | 69% | 2579 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,900 psi | 63% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,611 psi | 64% | 2572 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,127 psi | 52% | 2434 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 35,752 psi | 56% | 2539 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 45,658 psi | 72% | 2680 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 39,015 psi | 61% | 2559 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 37,536 psi | 59% | 2592 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 94% | 33,417 psi | 52% | 2572 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,343 psi | 49% | 2405 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 44,991 psi | 71% | 2720 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 44,396 psi | 70% | 2753 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,575 psi | 49% | 2579 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,234 psi | 65% | 2641 fps | 98.8% |
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 118 powders for .284 Win. loaded with the .284 | 139gr | Hornady SST. Alliant Reloder-17 delivers the highest muzzle velocity at 3,028 fps; across all powders the maximum-charge window runs from 1,739 fps to 3,028 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .284 Win. with the .284 | 139gr | Hornady SST they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.