Load Specifications
Bullet:.284 | 150gr | Barnes X BT
Bullet Manufacturer:Barnes
Bullet Weight:150 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 | 150gr | Barnes X BT bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and ReloadSwiss RS 70.
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 2015 | <<locked>> | 82% | 55,796 psi | 87% | 2638 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,985 psi | 88% | 2677 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,347 psi | 88% | 2730 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,652 psi | 89% | 2713 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,556 psi | 71% | 2638 fps | 97.3% |
| Accurate 4064 | <<locked>> | 88% | 55,883 psi | 88% | 2723 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,708 psi | 86% | 2802 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 54,520 psi | 85% | 2736 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,216 psi | 87% | 2736 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,141 psi | 82% | 2766 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,594 psi | 89% | 2733 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,607 psi | 86% | 2664 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,188 psi | 90% | 2904 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 51,924 psi | 81% | 2766 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,724 psi | 87% | 2762 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,057 psi | 88% | 2782 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,969 psi | 86% | 2848 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,202 psi | 88% | 2884 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,227 psi | 80% | 2759 fps | 95.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,888 psi | 67% | 2661 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,630 psi | 75% | 2818 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,421 psi | 90% | 2802 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 56,637 psi | 89% | 2779 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,347 psi | 88% | 2749 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,897 psi | 86% | 2667 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,478 psi | 89% | 2769 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 57,174 psi | 90% | 2789 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 96% | 56,521 psi | 89% | 2841 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 94% | 57,116 psi | 90% | 2802 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 84% | 55,042 psi | 86% | 2746 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,723 psi | 86% | 2772 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,447 psi | 85% | 2782 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,971 psi | 89% | 2877 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 56% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,883 psi | 88% | 2746 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,201 psi | 87% | 2730 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,766 psi | 86% | 2720 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,737 psi | 86% | 2700 fps | 98% |
| IMR 4350 | <<locked>> | 98% | 56,159 psi | 88% | 2772 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,667 psi | 90% | 2776 fps | 98.4% |
| IMR 4831 | <<locked>> | 98% | 54,563 psi | 86% | 2785 fps | 99.7% |
| IMR 4895 | <<locked>> | 88% | 57,435 psi | 90% | 2808 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,594 psi | 89% | 2733 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,752 psi | 86% | 2720 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,058 psi | 89% | 2710 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,158 psi | 86% | 2720 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 57,667 psi | 90% | 2772 fps | 99.3% |
| Lovex S070 | <<locked>> | 96% | 55,245 psi | 87% | 2759 fps | 98.3% |
| Norma 201 | <<locked>> | 86% | 57,174 psi | 90% | 2736 fps | 100% |
| Norma 202 | <<locked>> | 86% | 57,232 psi | 90% | 2730 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,332 psi | 87% | 2769 fps | 100% |
| Norma 204 | <<locked>> | 98% | 56,884 psi | 89% | 2822 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 47,659 psi | 75% | 2776 fps | 96.6% |
| Norma URP | <<locked>> | 98% | 56,318 psi | 88% | 2828 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 55,608 psi | 87% | 2792 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,187 psi | 86% | 2831 fps | 98.9% |
| Ramshot TAC | <<locked>> | 84% | 56,695 psi | 89% | 2756 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,550 psi | 89% | 2772 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,377 psi | 90% | 2736 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,869 psi | 58% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,392 psi | 90% | 2772 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,449 psi | 88% | 2844 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,753 psi | 87% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 57,290 psi | 90% | 2867 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,478 psi | 89% | 2894 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 55,463 psi | 87% | 2674 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,491 psi | 85% | 2690 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,536 psi | 89% | 2772 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,038 psi | 78% | 2743 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 94% | 56,347 psi | 88% | 2749 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 57,667 psi | 90% | 2772 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,752 psi | 86% | 2720 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,158 psi | 86% | 2720 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,245 psi | 87% | 2759 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,740 psi | 90% | 2828 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,811 psi | 87% | 2740 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,014 psi | 88% | 2756 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,592 psi | 86% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,868 psi | 86% | 2625 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,592 psi | 86% | 2680 fps | 97.9% |
| Somchem S335 | <<locked>> | 86% | 57,609 psi | 90% | 2667 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,882 psi | 86% | 2723 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,478 psi | 89% | 2766 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,578 psi | 86% | 2835 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,995 psi | 80% | 2726 fps | 96.8% |
| Vihtavuori N130 | <<locked>> | 82% | 57,725 psi | 90% | 2628 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 54,752 psi | 86% | 2605 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 57,159 psi | 90% | 2694 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,491 psi | 85% | 2667 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,682 psi | 90% | 2740 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,550 psi | 87% | 2779 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 84% | 57,246 psi | 90% | 2733 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,898 psi | 88% | 2710 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,621 psi | 86% | 2785 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,398 psi | 74% | 2736 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,100 psi | 86% | 2749 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 57,290 psi | 90% | 2782 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,840 psi | 89% | 2844 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,696 psi | 61% | 2684 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,217 psi | 88% | 2769 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% | 52,823 psi | 83% | 2598 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,615 psi | 73% | 2546 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,736 psi | 83% | 2680 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,949 psi | 74% | 2559 fps | 95.6% |
| Accurate 3100 | <<locked>> | 94% | 37,768 psi | 59% | 2490 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 44,063 psi | 69% | 2546 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,808 psi | 51% | 2392 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 48,428 psi | 76% | 2638 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 41,234 psi | 65% | 2497 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 98% | 49,110 psi | 77% | 2713 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,227 psi | 79% | 2641 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,227 psi | 80% | 2621 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,063 psi | 69% | 2677 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 48,950 psi | 77% | 2713 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,568 psi | 65% | 2530 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,222 psi | 69% | 2585 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,576 psi | 51% | 2392 fps | 95.2% |
| Alliant Reloder-17 | 42.2 gr | 80% | 36,027 psi | 56% | 2510 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 98% | 48,341 psi | 76% | 2707 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,877 psi | 45% | 2320 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,490 psi | 54% | 2526 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,587 psi | 75% | 2648 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 41,800 psi | 66% | 2543 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 44,425 psi | 70% | 2549 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,851 psi | 81% | 2625 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,574 psi | 78% | 2667 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,134 psi | 66% | 2539 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 86% | 41,539 psi | 65% | 2582 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 88% | 47,514 psi | 74% | 2644 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 48,863 psi | 77% | 2651 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,211 psi | 47% | 2300 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,860 psi | 70% | 2628 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 43,714 psi | 69% | 2648 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 43% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,702 psi | 73% | 2602 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 49,023 psi | 77% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,337 psi | 68% | 2530 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,629 psi | 72% | 2546 fps | 96.2% |
| IMR 4350 | <<locked>> | 90% | 44,353 psi | 70% | 2575 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,120 psi | 68% | 2530 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 31,807 psi | 50% | 2349 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 45,237 psi | 71% | 2615 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 50,227 psi | 79% | 2641 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,283 psi | 76% | 2625 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,906 psi | 75% | 2569 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 43,758 psi | 69% | 2536 fps | 99.8% |
| Lovex S065 | <<locked>> | 80% | 36,390 psi | 57% | 2392 fps | 95% |
| Lovex S070 | <<locked>> | 86% | 41,437 psi | 65% | 2520 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 47,863 psi | 75% | 2595 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,109 psi | 75% | 2598 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,627 psi | 68% | 2575 fps | 99.2% |
| Norma 204 | <<locked>> | 94% | 49,980 psi | 78% | 2713 fps | 95.2% |
| Norma MRP | <<locked>> | 98% | 44,570 psi | 70% | 2717 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 32,750 psi | 51% | 2385 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 42,975 psi | 67% | 2585 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 38,101 psi | 60% | 2516 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 50,270 psi | 79% | 2654 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,951 psi | 78% | 2674 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,940 psi | 85% | 2687 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,557 psi | 43% | 1532 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,076 psi | 66% | 2513 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,499 psi | 73% | 2684 fps | 99.3% |
| ReloadSwiss RS 60 | 42.2 gr | 80% | 38,130 psi | 60% | 2569 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,287 psi | 54% | 2451 fps | 95.5% |
| ReloadSwiss RS 70 | 45 gr | 84% | 36,216 psi | 57% | 2500 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 52,286 psi | 82% | 2631 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,890 psi | 72% | 2552 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,479 psi | 62% | 2487 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 47,021 psi | 74% | 2687 fps | 95% |
| Rottweil R 907 | <<locked>> | 86% | 44,425 psi | 70% | 2549 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,390 psi | 57% | 2392 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,283 psi | 76% | 2625 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,758 psi | 69% | 2536 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 41,437 psi | 65% | 2520 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,595 psi | 62% | 2526 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,921 psi | 77% | 2631 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,731 psi | 73% | 2612 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,588 psi | 76% | 2536 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,872 psi | 64% | 2415 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,641 psi | 67% | 2480 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 48,443 psi | 76% | 2539 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,457 psi | 76% | 2628 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 39,856 psi | 62% | 2487 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 29,704 psi | 47% | 2346 fps | 97.6% |
| Somchem S385 | <<locked>> | 96% | 45,165 psi | 71% | 2625 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 54,389 psi | 85% | 2582 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,820 psi | 77% | 2523 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,208 psi | 71% | 2526 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,484 psi | 71% | 2536 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,971 psi | 60% | 2425 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 33,924 psi | 53% | 2382 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 50,763 psi | 80% | 2641 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,961 psi | 69% | 2530 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,620 psi | 53% | 2388 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 86% | 31,067 psi | 49% | 2395 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,562 psi | 53% | 2359 fps | 97.6% |
| Winchester 748 | <<locked>> | 80% | 50,459 psi | 79% | 2684 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,539 psi | 65% | 2582 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,863 psi | 45% | 2392 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,441 psi | 73% | 2618 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 100 powders for .284 Win. loaded with the .284 | 150gr | Barnes X BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,904 fps; across all powders the maximum-charge window runs from 1,673 fps to 2,904 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 150.0 gr projectile in 0.284" calls for a 1:10.5 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. Alliant Reloder-17, ReloadSwiss RS 60, ReloadSwiss RS 70 rank at the top here: for .284 Win. with the .284 | 150gr | Barnes X BT 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.