Load Specifications
Bullet Manufacturer:Hasler
Bullet Weight:127 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 | 127gr | Hasler Hunting bullet and 101 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 ReloadSwiss RS 52.
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>> | 88% | 55,637 psi | 87% | 2904 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,143 psi | 85% | 2930 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 57,043 psi | 89% | 2969 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,246 psi | 88% | 2995 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 56,826 psi | 89% | 3012 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,139 psi | 77% | 2969 fps | 98.1% |
| Accurate LT-30 | <<locked>> | 82% | 55,114 psi | 86% | 2848 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,521 psi | 87% | 2874 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,824 psi | 86% | 2999 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 96% | 56,130 psi | 88% | 2999 fps | 99.3% |
| ADI AR 2219 | <<locked>> | 82% | 56,362 psi | 88% | 2976 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 57,624 psi | 90% | 3005 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 54,215 psi | 85% | 2936 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,709 psi | 87% | 3064 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,708 psi | 86% | 3117 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,376 psi | 87% | 3015 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,579 psi | 87% | 2913 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,260 psi | 88% | 3041 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,530 psi | 76% | 2979 fps | 98.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,318 psi | 88% | 3136 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,462 psi | 85% | 2844 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,984 psi | 86% | 3015 fps | 99% |
| Bofors RP3 | <<locked>> | 96% | 55,985 psi | 88% | 3031 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 56,782 psi | 89% | 2995 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,217 psi | 88% | 2943 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 57,029 psi | 89% | 3041 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,245 psi | 87% | 3084 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 84% | 54,940 psi | 86% | 2956 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,043 psi | 88% | 2982 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,421 psi | 90% | 3045 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 3028 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 90% | 55,376 psi | 87% | 3012 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,367 psi | 70% | 2851 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,578 psi | 86% | 3045 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,650 psi | 54% | 1818 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,985 psi | 89% | 3015 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 55,085 psi | 86% | 3002 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,550 psi | 87% | 2982 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,956 psi | 88% | 2956 fps | 96.6% |
| IMR 4198 | <<locked>> | 84% | 56,057 psi | 88% | 2877 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,405 psi | 87% | 2976 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,905 psi | 74% | 2910 fps | 97.7% |
| IMR 4895 | <<locked>> | 94% | 57,696 psi | 90% | 3074 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 90% | 57,624 psi | 90% | 3005 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 54,128 psi | 85% | 2940 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,331 psi | 85% | 2979 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,100 psi | 86% | 2930 fps | 99.6% |
| Lovex S062 | <<locked>> | 94% | 54,897 psi | 86% | 2976 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,099 psi | 85% | 2963 fps | 97.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,532 psi | 81% | 2940 fps | 96% |
| Norma 201 | <<locked>> | 92% | 56,869 psi | 89% | 2995 fps | 100% |
| Norma 202 | <<locked>> | 92% | 57,667 psi | 90% | 3002 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,361 psi | 87% | 3025 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 49,052 psi | 77% | 2963 fps | 98% |
| Ramshot Big Game | <<locked>> | 94% | 56,260 psi | 88% | 3054 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,196 psi | 76% | 2949 fps | 96% |
| Ramshot TAC | <<locked>> | 88% | 54,882 psi | 86% | 2969 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 90% | 57,696 psi | 90% | 3045 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,550 psi | 87% | 2959 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,128 psi | 55% | 1864 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,290 psi | 90% | 2989 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,534 psi | 85% | 2969 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,579 psi | 89% | 3110 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,507 psi | 89% | 3146 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,052 psi | 77% | 2989 fps | 97.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,908 psi | 78% | 3015 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 90% | 57,667 psi | 90% | 2979 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,493 psi | 90% | 2995 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,521 psi | 87% | 3018 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 56,782 psi | 89% | 2995 fps | 96.2% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,099 psi | 85% | 2963 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,331 psi | 85% | 2979 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,897 psi | 86% | 2976 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,532 psi | 81% | 2940 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,464 psi | 90% | 2966 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,565 psi | 89% | 2986 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,317 psi | 85% | 3031 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,768 psi | 89% | 2940 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,449 psi | 88% | 2999 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 56,942 psi | 89% | 3022 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,622 psi | 87% | 2890 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,782 psi | 87% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,679 psi | 86% | 2913 fps | 96.3% |
| Somchem S321 | <<locked>> | 86% | 55,666 psi | 87% | 2992 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 54,607 psi | 86% | 2887 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,188 psi | 88% | 2992 fps | 99.6% |
| Somchem S355 | <<locked>> | 98% | 56,231 psi | 88% | 3022 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,410 psi | 68% | 2904 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 86% | 55,579 psi | 87% | 2861 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,695 psi | 87% | 2877 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,927 psi | 89% | 2959 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,839 psi | 86% | 2933 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,215 psi | 85% | 2946 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,576 psi | 81% | 2963 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 88% | 54,766 psi | 86% | 2956 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 56,521 psi | 89% | 2976 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,444 psi | 79% | 2963 fps | 98% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,866 psi | 83% | 2953 fps | 99.7% |
| Winchester 748 | <<locked>> | 88% | 54,143 psi | 85% | 3002 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 3028 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 92% | 57,072 psi | 89% | 3035 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% | 43,352 psi | 68% | 2713 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,108 psi | 74% | 2818 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,462 psi | 56% | 2612 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,351 psi | 66% | 2769 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 33,562 psi | 53% | 2592 fps | 99.1% |
| Accurate 4350 | <<locked>> | 94% | 39,566 psi | 62% | 2782 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 51,793 psi | 81% | 2802 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,199 psi | 82% | 2825 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,900 psi | 63% | 2720 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 36,245 psi | 57% | 2618 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 52,504 psi | 82% | 2923 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,018 psi | 66% | 2740 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 41,278 psi | 65% | 2736 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,892 psi | 77% | 2949 fps | 99.3% |
| Alliant Power Pro 2000-MR | 45.2 gr | 82% | 38,653 psi | 61% | 2789 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,025 psi | 52% | 2579 fps | 96% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,921 psi | 77% | 2815 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,723 psi | 56% | 2644 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,579 psi | 59% | 2740 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 86% | 35,027 psi | 55% | 2707 fps | 96% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,053 psi | 80% | 2795 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,885 psi | 61% | 2713 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 32,198 psi | 50% | 2569 fps | 95.8% |
| Bofors RP7 | <<locked>> | 98% | 52,968 psi | 83% | 2933 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,816 psi | 69% | 2733 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,321 psi | 63% | 2749 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,367 psi | 70% | 2894 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 80% | 47,964 psi | 75% | 2848 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,863 psi | 77% | 2871 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 40,915 psi | 64% | 2749 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 98% | 49,371 psi | 77% | 2966 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 40,248 psi | 63% | 2733 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 34,258 psi | 54% | 2628 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,027 psi | 56% | 2687 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,614 psi | 40% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,609 psi | 61% | 2680 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 39,363 psi | 62% | 2740 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,636 psi | 56% | 2598 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,516 psi | 78% | 2848 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 49,647 psi | 78% | 2785 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 52,156 psi | 82% | 2923 fps | 95.8% |
| IMR 4831 | <<locked>> | 94% | 38,290 psi | 60% | 2736 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 36,579 psi | 57% | 2674 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 42,018 psi | 66% | 2740 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 47,094 psi | 74% | 2825 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 38,218 psi | 60% | 2694 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 40,553 psi | 64% | 2667 fps | 97.4% |
| Lovex S062 | <<locked>> | 80% | 35,259 psi | 55% | 2605 fps | 97.2% |
| Lovex S065 | <<locked>> | 94% | 44,875 psi | 70% | 2802 fps | 95.6% |
| Lovex S070 | <<locked>> | 98% | 48,080 psi | 75% | 2881 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 38,957 psi | 61% | 2674 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 39,160 psi | 61% | 2690 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 35,085 psi | 55% | 2631 fps | 95.7% |
| Norma URP | <<locked>> | 94% | 40,147 psi | 63% | 2789 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 34,621 psi | 54% | 2638 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 98% | 44,947 psi | 70% | 2887 fps | 95.1% |
| Ramshot TAC | <<locked>> | 82% | 44,744 psi | 70% | 2789 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,075 psi | 64% | 2753 fps | 97.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,556 psi | 71% | 2789 fps | 98.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,889 psi | 41% | 1663 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,239 psi | 74% | 2831 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 47,601 psi | 75% | 2851 fps | 95.5% |
| ReloadSwiss RS 52 | 42.7 gr | 80% | 36,927 psi | 58% | 2740 fps | 95.6% |
| ReloadSwiss RS 60 | 43.4 gr | 80% | 30,414 psi | 48% | 2589 fps | 96.6% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,508 psi | 62% | 2799 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,439 psi | 68% | 2884 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 42,554 psi | 67% | 2730 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 36,970 psi | 58% | 2621 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 32,358 psi | 51% | 2566 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 98% | 52,968 psi | 83% | 2933 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 44,875 psi | 70% | 2802 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,218 psi | 60% | 2694 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 35,259 psi | 55% | 2605 fps | 97.2% |
| Shooters World SW4350 | <<locked>> | 98% | 48,080 psi | 75% | 2881 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,024 psi | 78% | 2851 fps | 99.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,895 psi | 83% | 2930 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 36,289 psi | 57% | 2687 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,879 psi | 78% | 2838 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,856 psi | 62% | 2697 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,377 psi | 60% | 2684 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,567 psi | 64% | 2641 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,359 psi | 52% | 2497 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 51,213 psi | 80% | 2858 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 45,121 psi | 71% | 2815 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 40,132 psi | 63% | 2644 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 39,595 psi | 62% | 2700 fps | 97% |
| Somchem S355 | <<locked>> | 82% | 33,576 psi | 53% | 2582 fps | 95.7% |
| Somchem S365 | <<locked>> | 88% | 29,298 psi | 46% | 2552 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 46,035 psi | 72% | 2720 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,814 psi | 64% | 2644 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,056 psi | 56% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,970 psi | 58% | 2621 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 29,762 psi | 47% | 2461 fps | 95.8% |
| Vihtavuori N160 | <<locked>> | 92% | 39,508 psi | 62% | 2736 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 41,814 psi | 66% | 2730 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 35,650 psi | 56% | 2608 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 92% | 38,667 psi | 61% | 2733 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,837 psi | 51% | 2546 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 41,104 psi | 64% | 2772 fps | 99.2% |
| Winchester 760 | <<locked>> | 98% | 49,647 psi | 78% | 2969 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,623 psi | 59% | 2684 fps | 97.2% |
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 101 powders for .284 Win. loaded with the .284 | 127gr | Hasler Hunting. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,146 fps; across all powders the maximum-charge window runs from 1,818 fps to 3,146 fps. Accurate 4350 gives the best case fill at 100 %, and 101 of the 101 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 127.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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, ReloadSwiss RS 52 rank at the top here: for .284 Win. with the .284 | 127gr | Hasler Hunting 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.