Load Specifications
Bullet Manufacturer:Speer
Bullet Weight:130 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:1:14.0
Load data in caliber .284 Win. with .284 | 130gr | Speer Soft Point bullet and 102 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>> | 86% | 57,377 psi | 90% | 2904 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,825 psi | 87% | 2933 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,101 psi | 88% | 2930 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,418 psi | 85% | 2946 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,463 psi | 87% | 2920 fps | 96.4% |
| Accurate 4064 | <<locked>> | 92% | 56,115 psi | 88% | 2979 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,753 psi | 87% | 3054 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 56,710 psi | 89% | 3012 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 57,421 psi | 90% | 3002 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,666 psi | 87% | 2959 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,188 psi | 88% | 2933 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 57,522 psi | 90% | 3074 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,434 psi | 88% | 3133 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,479 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,101 psi | 89% | 2913 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,795 psi | 86% | 3002 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,563 psi | 84% | 3058 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,810 psi | 86% | 3097 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,159 psi | 60% | 2772 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,612 psi | 67% | 2930 fps | 96.8% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,391 psi | 88% | 3022 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 54,636 psi | 86% | 2992 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,940 psi | 86% | 2956 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,464 psi | 90% | 2943 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,810 psi | 86% | 2986 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,942 psi | 89% | 3091 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 56,057 psi | 88% | 2953 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,493 psi | 90% | 2982 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,535 psi | 87% | 3002 fps | 99% |
| Hodgdon H414 | <<locked>> | 98% | 55,042 psi | 86% | 3048 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 96% | 55,840 psi | 88% | 3009 fps | 96% |
| Hodgdon H4895 | <<locked>> | 88% | 57,261 psi | 90% | 3022 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,603 psi | 78% | 2927 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,739 psi | 89% | 3054 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,275 psi | 88% | 3091 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,331 psi | 55% | 1827 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,853 psi | 86% | 2969 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 56,869 psi | 89% | 3002 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,130 psi | 90% | 2992 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,101 psi | 89% | 2966 fps | 97.5% |
| IMR 4198 | <<locked>> | 82% | 56,927 psi | 89% | 2867 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,911 psi | 86% | 2979 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,724 psi | 89% | 2989 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,794 psi | 83% | 2992 fps | 99.1% |
| IMR 4895 | <<locked>> | 90% | 56,188 psi | 88% | 3035 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 55,666 psi | 87% | 2959 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,999 psi | 88% | 2946 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,275 psi | 88% | 2982 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,260 psi | 88% | 2936 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 56,869 psi | 89% | 2986 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,101 psi | 88% | 2982 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,898 psi | 89% | 3015 fps | 97.7% |
| Norma 201 | <<locked>> | 88% | 55,230 psi | 87% | 2953 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,898 psi | 88% | 2956 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,508 psi | 90% | 3041 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 54,650 psi | 86% | 3038 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 90% | 54,462 psi | 85% | 3012 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,635 psi | 84% | 3035 fps | 97.9% |
| Ramshot TAC | <<locked>> | 86% | 56,144 psi | 88% | 2979 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,593 psi | 87% | 2995 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,666 psi | 89% | 2963 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,897 psi | 56% | 1873 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,114 psi | 86% | 2940 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,144 psi | 88% | 2986 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,926 psi | 86% | 3064 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,679 psi | 86% | 3104 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,332 psi | 87% | 3074 fps | 99.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,390 psi | 87% | 3104 fps | 99% |
| Rottweil R 901 | <<locked>> | 86% | 56,173 psi | 88% | 2936 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,767 psi | 87% | 2949 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,462 psi | 85% | 2982 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,940 psi | 86% | 2956 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,101 psi | 88% | 2982 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,275 psi | 88% | 2982 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,869 psi | 89% | 2986 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,898 psi | 89% | 3015 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,159 psi | 88% | 3045 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,331 psi | 85% | 2949 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,882 psi | 86% | 2976 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,014 psi | 89% | 2894 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,188 psi | 90% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,362 psi | 88% | 2930 fps | 97.3% |
| Somchem S321 | <<locked>> | 84% | 57,043 psi | 89% | 2995 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,101 psi | 88% | 2887 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,624 psi | 90% | 2999 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 54,708 psi | 86% | 2979 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,066 psi | 77% | 2989 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 56,608 psi | 89% | 2854 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,232 psi | 90% | 2877 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,419 psi | 87% | 2917 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,260 psi | 88% | 2930 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,463 psi | 88% | 2959 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3038 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 56,159 psi | 88% | 2959 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,447 psi | 85% | 2927 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,449 psi | 88% | 3041 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,713 psi | 65% | 2854 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,317 psi | 85% | 2963 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 56,159 psi | 88% | 3009 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,317 psi | 87% | 3051 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,185 psi | 54% | 2753 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,926 psi | 86% | 2989 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 47,761 psi | 75% | 2766 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,344 psi | 82% | 2881 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,277 psi | 63% | 2680 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,456 psi | 74% | 2838 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,069 psi | 82% | 2867 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 38,101 psi | 60% | 2667 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 36,796 psi | 58% | 2700 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 43,961 psi | 69% | 2789 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 37,347 psi | 59% | 2628 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,035 psi | 72% | 2799 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 46,253 psi | 72% | 2792 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,838 psi | 84% | 3015 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,798 psi | 62% | 2805 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,985 psi | 58% | 2654 fps | 97.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,461 psi | 84% | 2861 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,711 psi | 62% | 2717 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,854 psi | 58% | 2710 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 31,821 psi | 50% | 2602 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,720 psi | 50% | 2598 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 39,595 psi | 62% | 2861 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,105 psi | 68% | 2789 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 36,622 psi | 57% | 2654 fps | 97.9% |
| Bofors RP7 | <<locked>> | 92% | 48,341 psi | 76% | 2841 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,718 psi | 75% | 2789 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,715 psi | 70% | 2818 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,327 psi | 77% | 2966 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 52,765 psi | 83% | 2904 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,679 psi | 84% | 2927 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,304 psi | 58% | 2651 fps | 95% |
| Hodgdon H414 | <<locked>> | 92% | 45,208 psi | 71% | 2874 fps | 95% |
| Hodgdon H4350 | <<locked>> | 94% | 52,388 psi | 82% | 2953 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 44,353 psi | 70% | 2799 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,691 psi | 50% | 2546 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,205 psi | 63% | 2762 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 94% | 48,530 psi | 76% | 2953 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,237 psi | 41% | 1634 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,685 psi | 67% | 2753 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 43,859 psi | 69% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,204 psi | 61% | 2664 fps | 97.1% |
| IMR 4166 Enduron | <<locked>> | 84% | 47,311 psi | 74% | 2799 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 53,621 psi | 84% | 2822 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 48,675 psi | 76% | 2871 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 47,311 psi | 74% | 2828 fps | 95.4% |
| IMR 4831 | <<locked>> | 88% | 35,621 psi | 56% | 2654 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 40,669 psi | 64% | 2749 fps | 98% |
| IMR 8208 XBR | <<locked>> | 80% | 46,035 psi | 72% | 2799 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 52,199 psi | 82% | 2890 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,989 psi | 67% | 2766 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 44,019 psi | 69% | 2723 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 39,131 psi | 61% | 2671 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 41,147 psi | 64% | 2710 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 44,324 psi | 69% | 2795 fps | 95% |
| Norma 201 | <<locked>> | 80% | 42,960 psi | 67% | 2740 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 43,366 psi | 68% | 2753 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,073 psi | 61% | 2707 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 36,912 psi | 58% | 2697 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 38,493 psi | 60% | 2713 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 44,034 psi | 69% | 2854 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 45,905 psi | 72% | 2799 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,455 psi | 71% | 2822 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,574 psi | 78% | 2848 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,600 psi | 42% | 1673 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,735 psi | 81% | 2887 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,134 psi | 68% | 2753 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,553 psi | 65% | 2822 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,881 psi | 53% | 2674 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,608 psi | 57% | 2717 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,421 psi | 62% | 2785 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 46,992 psi | 74% | 2789 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,959 psi | 64% | 2690 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 34,345 psi | 54% | 2595 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 92% | 48,341 psi | 76% | 2841 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,147 psi | 64% | 2710 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,989 psi | 67% | 2766 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 39,131 psi | 61% | 2671 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 92% | 44,324 psi | 69% | 2795 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,317 psi | 55% | 2644 fps | 96.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,295 psi | 69% | 2772 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,409 psi | 66% | 2753 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,382 psi | 70% | 2697 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,883 psi | 58% | 2556 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 46,572 psi | 73% | 2769 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 49,748 psi | 78% | 2881 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 43,918 psi | 69% | 2697 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,874 psi | 69% | 2769 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 35,157 psi | 55% | 2602 fps | 96.9% |
| Somchem S365 | <<locked>> | 84% | 29,008 psi | 45% | 2526 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 50,096 psi | 79% | 2762 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,686 psi | 70% | 2690 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,306 psi | 63% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,988 psi | 64% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,460 psi | 52% | 2536 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 86% | 36,318 psi | 57% | 2648 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 46,180 psi | 72% | 2799 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 39,465 psi | 62% | 2667 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 38,087 psi | 60% | 2703 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 94% | 34,055 psi | 53% | 2677 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,850 psi | 50% | 2510 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 45,629 psi | 72% | 2838 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 45,208 psi | 71% | 2874 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 32,111 psi | 50% | 2684 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,974 psi | 66% | 2759 fps | 98.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 115 powders for .284 Win. loaded with the .284 | 130gr | Speer Soft Point. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,133 fps; across all powders the maximum-charge window runs from 1,827 fps to 3,133 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.284" calls for a 1:14.0 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. 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.