Load Specifications
Load data in caliber .243 Ackley Improved with .243 | 90gr | Nosler Ballistic Tip Hunting bullet and 58 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-16 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 48,733 psi | 88% | 2966 fps | 96.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,646 psi | 88% | 3048 fps | 97.9% |
| Accurate 4064 | <<locked>> | 82% | 47,776 psi | 86% | 2982 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 47,355 psi | 86% | 3054 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 84% | 48,370 psi | 88% | 3002 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 49,995 psi | 90% | 3173 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 48,573 psi | 88% | 3028 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 82% | 48,820 psi | 88% | 3045 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 92% | 48,907 psi | 89% | 3127 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 88% | 49,240 psi | 89% | 3150 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,832 psi | 83% | 3077 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,248 psi | 73% | 2966 fps | 96.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 48,689 psi | 88% | 3205 fps | 99.2% |
| Bofors RP3 | <<locked>> | 84% | 49,023 psi | 89% | 3041 fps | 100% |
| Bofors RP7 | <<locked>> | 88% | 49,081 psi | 89% | 3012 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 84% | 49,864 psi | 90% | 3058 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 88% | 46,746 psi | 85% | 3048 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 48,762 psi | 88% | 3051 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 90% | 49,806 psi | 90% | 3133 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,042 psi | 65% | 1978 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 47,863 psi | 87% | 2986 fps | 99.4% |
| IMR 4350 | <<locked>> | 92% | 49,864 psi | 90% | 3045 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 47,587 psi | 86% | 2986 fps | 96.5% |
| IMR 4831 | <<locked>> | 92% | 48,269 psi | 87% | 3054 fps | 99.1% |
| Lovex S062 | <<locked>> | 82% | 48,051 psi | 87% | 2989 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 47,688 psi | 86% | 2989 fps | 97.9% |
| Lovex S070 | <<locked>> | 90% | 48,573 psi | 88% | 3025 fps | 97.1% |
| Norma 203B | <<locked>> | 82% | 48,138 psi | 87% | 3031 fps | 99.7% |
| Norma MRP | <<locked>> | 98% | 48,037 psi | 87% | 3153 fps | 96.8% |
| Norma URP | <<locked>> | 92% | 49,966 psi | 90% | 3104 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 82% | 48,573 psi | 88% | 3054 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 92% | 48,776 psi | 88% | 3094 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 66% | 2024 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 49,850 psi | 90% | 3031 fps | 97.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 48,834 psi | 88% | 3150 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 47,340 psi | 86% | 3077 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 49,806 psi | 90% | 3163 fps | 99% |
| Rottweil R 902 | <<locked>> | 82% | 49,763 psi | 90% | 3002 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 49,211 psi | 89% | 3041 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 88% | 49,081 psi | 89% | 3012 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 47,688 psi | 86% | 2989 fps | 97.9% |
| Shooters World Precision | <<locked>> | 82% | 48,051 psi | 87% | 2989 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 48,573 psi | 88% | 3025 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 47,413 psi | 86% | 3041 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 47,747 psi | 86% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 47,224 psi | 85% | 2930 fps | 96.6% |
| Somchem S355 | <<locked>> | 86% | 49,327 psi | 89% | 3035 fps | 99.9% |
| Somchem S365 | <<locked>> | 94% | 48,617 psi | 88% | 3114 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 48,051 psi | 87% | 3038 fps | 96.2% |
| Vihtavuori N135 | <<locked>> | 82% | 49,763 psi | 90% | 2969 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 47,485 psi | 86% | 2963 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 48,704 psi | 88% | 3041 fps | 99% |
| Vihtavuori N540 | <<locked>> | 82% | 48,660 psi | 88% | 2976 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 48,196 psi | 87% | 3048 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 98% | 47,674 psi | 86% | 3100 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 48,472 psi | 88% | 3015 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 46,746 psi | 85% | 3048 fps | 96.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,336 psi | 75% | 3110 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 2700 | <<locked>> | 80% | 45,571 psi | 82% | 2904 fps | 95.2% |
| Accurate 3100 | <<locked>> | 94% | 39,697 psi | 72% | 2867 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 44,599 psi | 81% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,576 psi | 61% | 2740 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 42,830 psi | 78% | 2894 fps | 98.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,659 psi | 84% | 3107 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,960 psi | 78% | 2920 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,919 psi | 83% | 2989 fps | 99.1% |
| Alliant Reloder-16 | 37.2 gr | 80% | 33,257 psi | 60% | 2753 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,289 psi | 67% | 2887 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 88% | 31,183 psi | 56% | 2713 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,637 psi | 68% | 2900 fps | 95.3% |
| Alliant Reloder-26 | 46.2 gr | 90% | 36,405 psi | 66% | 2917 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 42,946 psi | 78% | 2923 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 46,209 psi | 84% | 2953 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 43,482 psi | 79% | 2930 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 43,642 psi | 79% | 2982 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,632 psi | 55% | 2641 fps | 96% |
| Hodgdon Superformance | <<locked>> | 86% | 43,149 psi | 78% | 2995 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,919 psi | 49% | 1772 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,020 psi | 81% | 2933 fps | 99.1% |
| IMR 4350 | <<locked>> | 88% | 43,947 psi | 80% | 2927 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,250 psi | 76% | 2871 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 34,737 psi | 63% | 2756 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 44,875 psi | 81% | 2930 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 39,552 psi | 72% | 2815 fps | 95.8% |
| Lovex S070 | <<locked>> | 86% | 42,786 psi | 77% | 2904 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 45,295 psi | 82% | 2976 fps | 99.4% |
| Norma MRP | <<locked>> | 96% | 44,817 psi | 81% | 3084 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 33,692 psi | 61% | 2743 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 45,368 psi | 82% | 2992 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 40,030 psi | 72% | 2907 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,209 psi | 49% | 1811 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,627 psi | 79% | 2907 fps | 96.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,639 psi | 72% | 2959 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 35,665 psi | 65% | 2818 fps | 95.6% |
| ReloadSwiss RS 70 | 42.7 gr | 84% | 37,666 psi | 68% | 2887 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 46,789 psi | 85% | 2949 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 40,466 psi | 73% | 2867 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 46,209 psi | 84% | 2953 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 39,552 psi | 72% | 2815 fps | 95.8% |
| Shooters World Precision | <<locked>> | 80% | 44,875 psi | 81% | 2930 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 42,786 psi | 77% | 2904 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,379 psi | 75% | 2917 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,134 psi | 76% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,481 psi | 75% | 2812 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 40,756 psi | 74% | 2864 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 30,255 psi | 55% | 2687 fps | 97.4% |
| Somchem S385 | <<locked>> | 94% | 44,817 psi | 81% | 2972 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 46,717 psi | 85% | 2920 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,131 psi | 71% | 2795 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 35,027 psi | 63% | 2746 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 45,527 psi | 82% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,519 psi | 62% | 2740 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 86% | 31,865 psi | 58% | 2736 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,563 psi | 63% | 2713 fps | 97.8% |
| Winchester 760 | <<locked>> | 86% | 43,932 psi | 80% | 2986 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 29,443 psi | 53% | 2740 fps | 95.8% |
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 58 powders for .243 Ackley Improved loaded with the .243 | 90gr | Nosler Ballistic Tip Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 3,205 fps; across all powders the maximum-charge window runs from 1,978 fps to 3,205 fps. Accurate 3100 gives the best case fill at 100 %, and 58 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (381 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 90.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-25 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-26, Alliant Reloder-16, ReloadSwiss RS 70 rank at the top here: for .243 Ackley Improved with the .243 | 90gr | Nosler Ballistic Tip 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.