Load Specifications
Bullet:.284 | 128gr | IBEX TRD
Bullet Manufacturer:IBEX
Bullet Weight:128 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:1:11.0
Load data in caliber .284 Win. with .284 | 128gr | IBEX TRD bullet and 99 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.
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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>> | 86% | 56,579 psi | 89% | 2884 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,172 psi | 86% | 2910 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,622 psi | 87% | 2913 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,724 psi | 89% | 2969 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 55,288 psi | 87% | 2956 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,824 psi | 84% | 3015 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 88% | 55,158 psi | 86% | 2976 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 94% | 55,956 psi | 88% | 2969 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 88% | 57,522 psi | 90% | 2976 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,882 psi | 86% | 2913 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,898 psi | 88% | 3038 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,433 psi | 85% | 3084 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,101 psi | 88% | 2999 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,115 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,652 psi | 89% | 3018 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,866 psi | 81% | 3012 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,521 psi | 89% | 3114 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,478 psi | 59% | 2736 fps | 96.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 57,580 psi | 90% | 2861 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,810 psi | 86% | 2986 fps | 99% |
| Bofors RP3 | <<locked>> | 94% | 56,956 psi | 89% | 3018 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,043 psi | 89% | 2972 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,999 psi | 88% | 2910 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 57,130 psi | 90% | 3012 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,100 psi | 86% | 3051 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 82% | 54,795 psi | 86% | 2927 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,767 psi | 87% | 2949 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,128 psi | 85% | 2966 fps | 98.4% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 3061 fps | 97% |
| Hodgdon H4895 | <<locked>> | 88% | 55,637 psi | 87% | 2986 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,240 psi | 76% | 2894 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,520 psi | 85% | 3015 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,447 psi | 56% | 1814 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,739 psi | 89% | 2986 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 55,390 psi | 87% | 2976 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,506 psi | 87% | 2953 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,724 psi | 87% | 2927 fps | 96.6% |
| IMR 4198 | <<locked>> | 82% | 55,637 psi | 87% | 2844 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,317 psi | 87% | 2949 fps | 96.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,952 psi | 80% | 2949 fps | 98.5% |
| IMR 4895 | <<locked>> | 90% | 54,679 psi | 86% | 2999 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 88% | 57,522 psi | 90% | 2976 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,795 psi | 86% | 2917 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,984 psi | 86% | 2956 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,882 psi | 86% | 2900 fps | 99.6% |
| Lovex S062 | <<locked>> | 92% | 55,521 psi | 87% | 2956 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,679 psi | 86% | 2943 fps | 97.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,535 psi | 87% | 2979 fps | 96.9% |
| Norma 201 | <<locked>> | 88% | 54,520 psi | 85% | 2930 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 54,505 psi | 85% | 2927 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,796 psi | 87% | 3005 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 52,881 psi | 83% | 3002 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 92% | 56,144 psi | 88% | 3028 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,735 psi | 81% | 2986 fps | 96.9% |
| Ramshot TAC | <<locked>> | 86% | 54,650 psi | 86% | 2940 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,172 psi | 85% | 2963 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,303 psi | 87% | 2927 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,853 psi | 56% | 1857 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 57,145 psi | 90% | 2959 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,491 psi | 85% | 2943 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,840 psi | 89% | 3084 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 56,260 psi | 88% | 3117 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,127 psi | 83% | 3031 fps | 98.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,403 psi | 84% | 3051 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 86% | 55,767 psi | 87% | 2917 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,839 psi | 86% | 2923 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 56,463 psi | 88% | 3002 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 57,043 psi | 89% | 2972 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,679 psi | 86% | 2943 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,984 psi | 86% | 2956 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,521 psi | 87% | 2956 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,535 psi | 87% | 2979 fps | 96.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,927 psi | 89% | 2930 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,244 psi | 85% | 3005 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,376 psi | 88% | 2904 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 56,898 psi | 89% | 2976 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,985 psi | 89% | 2999 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,869 psi | 88% | 2867 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,579 psi | 87% | 2861 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,042 psi | 86% | 2894 fps | 96.5% |
| Somchem S321 | <<locked>> | 84% | 55,666 psi | 87% | 2963 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,317 psi | 87% | 2867 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,985 psi | 88% | 2963 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 56,826 psi | 89% | 2999 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,529 psi | 74% | 2953 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 55,448 psi | 87% | 2831 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,869 psi | 88% | 2851 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 57,348 psi | 90% | 2936 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,027 psi | 86% | 2907 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,650 psi | 86% | 2927 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 2995 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 86% | 54,824 psi | 86% | 2930 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 56,492 psi | 89% | 2949 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,737 psi | 86% | 3005 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,364 psi | 63% | 2818 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,275 psi | 88% | 2979 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 54,404 psi | 85% | 2976 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 3061 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,884 psi | 89% | 3009 fps | 99.9% |
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% | 47,210 psi | 74% | 2746 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,663 psi | 81% | 2858 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,654 psi | 64% | 2674 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,731 psi | 73% | 2815 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 38,406 psi | 60% | 2661 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 38,769 psi | 61% | 2733 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 43,308 psi | 68% | 2759 fps | 98% |
| ADI AR 2208 | <<locked>> | 80% | 36,956 psi | 58% | 2605 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,194 psi | 71% | 2772 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 45,237 psi | 71% | 2772 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,562 psi | 82% | 2982 fps | 99.7% |
| Alliant Power Pro 2000-MR | 44 gr | 80% | 39,160 psi | 61% | 2772 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,506 psi | 57% | 2628 fps | 97.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,823 psi | 83% | 2841 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,175 psi | 61% | 2690 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 90% | 38,638 psi | 61% | 2736 fps | 95.4% |
| Alliant Reloder-17 | 44.4 gr | 82% | 33,736 psi | 53% | 2641 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 33,417 psi | 52% | 2628 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 54,128 psi | 85% | 2815 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,351 psi | 66% | 2759 fps | 96.7% |
| Bofors RP3 | <<locked>> | 80% | 36,448 psi | 57% | 2638 fps | 97.3% |
| Bofors RP7 | <<locked>> | 96% | 53,679 psi | 84% | 2917 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,108 psi | 74% | 2762 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,005 psi | 69% | 2792 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,863 psi | 75% | 2930 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 80% | 51,532 psi | 81% | 2877 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,257 psi | 82% | 2897 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 39,624 psi | 62% | 2690 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 96% | 49,879 psi | 78% | 2946 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 43,671 psi | 68% | 2772 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 33,576 psi | 53% | 2579 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,595 psi | 62% | 2740 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 41% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,887 psi | 66% | 2723 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 43,047 psi | 67% | 2776 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,783 psi | 61% | 2641 fps | 96.4% |
| IMR 4166 Enduron | <<locked>> | 86% | 49,356 psi | 77% | 2818 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 52,330 psi | 82% | 2795 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 92% | 48,965 psi | 77% | 2841 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 37,304 psi | 58% | 2684 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 40,118 psi | 63% | 2723 fps | 97.4% |
| IMR 8208 XBR | <<locked>> | 80% | 45,194 psi | 71% | 2772 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 51,358 psi | 80% | 2861 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,598 psi | 67% | 2749 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 43,497 psi | 68% | 2697 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 38,914 psi | 61% | 2651 fps | 98.2% |
| Lovex S065 | <<locked>> | 90% | 43,323 psi | 68% | 2740 fps | 95.2% |
| Lovex S070 | <<locked>> | 96% | 49,008 psi | 77% | 2867 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 42,815 psi | 67% | 2720 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 42,670 psi | 67% | 2726 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 38,595 psi | 60% | 2680 fps | 96.9% |
| Norma URP | <<locked>> | 90% | 38,783 psi | 61% | 2726 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 37,898 psi | 59% | 2687 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 96% | 45,730 psi | 72% | 2874 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 45,078 psi | 71% | 2766 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,411 psi | 70% | 2789 fps | 98.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,805 psi | 76% | 2818 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,890 psi | 42% | 1663 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,459 psi | 79% | 2858 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 48,211 psi | 76% | 2835 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,756 psi | 64% | 2792 fps | 96.9% |
| ReloadSwiss RS 60 | 43.3 gr | 80% | 33,576 psi | 53% | 2651 fps | 98% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 40,857 psi | 64% | 2802 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 43,903 psi | 69% | 2867 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 46,847 psi | 73% | 2769 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,799 psi | 64% | 2671 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 34,403 psi | 54% | 2582 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 96% | 53,679 psi | 84% | 2917 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 43,323 psi | 68% | 2740 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,598 psi | 67% | 2749 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 38,914 psi | 61% | 2651 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 96% | 49,008 psi | 77% | 2867 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,301 psi | 84% | 2874 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,998 psi | 55% | 2621 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,345 psi | 84% | 2861 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,540 psi | 68% | 2743 fps | 96.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,887 psi | 66% | 2730 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,019 psi | 69% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,622 psi | 57% | 2539 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 48,327 psi | 76% | 2782 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 49,008 psi | 77% | 2858 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 43,656 psi | 68% | 2677 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,207 psi | 68% | 2743 fps | 97.9% |
| Somchem S355 | <<locked>> | 80% | 35,128 psi | 55% | 2585 fps | 96.3% |
| Somchem S365 | <<locked>> | 84% | 28,993 psi | 45% | 2507 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 49,559 psi | 78% | 2743 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,150 psi | 69% | 2671 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,030 psi | 63% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,553 psi | 64% | 2664 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 33,388 psi | 52% | 2523 fps | 97.2% |
| Vihtavuori N160 | <<locked>> | 90% | 40,509 psi | 63% | 2730 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 45,426 psi | 71% | 2769 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 39,073 psi | 61% | 2651 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 39,914 psi | 63% | 2730 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 96% | 35,723 psi | 56% | 2710 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 33,750 psi | 53% | 2543 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 44,585 psi | 70% | 2808 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 49,879 psi | 78% | 2946 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,278 psi | 65% | 2733 fps | 98.1% |
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 99 powders for .284 Win. loaded with the .284 | 128gr | IBEX TRD. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,814 fps to 3,117 fps. Accurate 4350 gives the best case fill at 100 %, and 99 of the 99 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 128.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 | 128gr | IBEX TRD 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.