Load Specifications
Load data in caliber .243 Ackley Improved with .243 | 95gr | Berger VLD Target bullet and 57 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Alliant Reloder-16.
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 3100 | <<locked>> | 98% | 47,369 psi | 86% | 2959 fps | 98.1% |
| Accurate 4064 | <<locked>> | 82% | 49,516 psi | 90% | 2936 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 49,414 psi | 89% | 3022 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 84% | 49,835 psi | 90% | 2959 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 47,268 psi | 86% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 47,355 psi | 86% | 3028 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 86% | 47,805 psi | 87% | 3048 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,848 psi | 87% | 3045 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,669 psi | 75% | 2943 fps | 97.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 47,210 psi | 85% | 3107 fps | 99.3% |
| Bofors RP3 | <<locked>> | 82% | 47,776 psi | 86% | 2946 fps | 100% |
| Bofors RP7 | <<locked>> | 86% | 47,703 psi | 86% | 2917 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 82% | 48,153 psi | 87% | 2956 fps | 99% |
| Hodgdon H414 | <<locked>> | 88% | 48,602 psi | 88% | 3015 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 86% | 48,762 psi | 88% | 2976 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 47,645 psi | 86% | 2959 fps | 100% |
| Hodgdon Superformance | <<locked>> | 88% | 48,080 psi | 87% | 3035 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,143 psi | 65% | 1926 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 49,371 psi | 89% | 2943 fps | 99.8% |
| IMR 4350 | <<locked>> | 90% | 48,341 psi | 87% | 2949 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 49,385 psi | 89% | 2953 fps | 97.5% |
| IMR 4831 | <<locked>> | 90% | 47,181 psi | 85% | 2966 fps | 99.3% |
| Lovex S062 | <<locked>> | 82% | 49,588 psi | 90% | 2943 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 49,269 psi | 89% | 2953 fps | 98.7% |
| Lovex S070 | <<locked>> | 88% | 47,065 psi | 85% | 2927 fps | 97.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,177 psi | 76% | 2858 fps | 96.9% |
| Norma 203B | <<locked>> | 82% | 49,792 psi | 90% | 2989 fps | 99.9% |
| Norma MRP | <<locked>> | 96% | 46,862 psi | 85% | 3061 fps | 97.1% |
| Norma URP | <<locked>> | 90% | 48,791 psi | 88% | 3012 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 90% | 47,442 psi | 86% | 2999 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,724 psi | 66% | 1972 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 48,211 psi | 87% | 2933 fps | 97.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 47,398 psi | 86% | 3048 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 49,414 psi | 89% | 3045 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 48,051 psi | 87% | 3061 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 47,950 psi | 87% | 2943 fps | 100% |
| Rottweil R 905 | <<locked>> | 96% | 49,081 psi | 89% | 3025 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 86% | 47,703 psi | 86% | 2917 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 49,269 psi | 89% | 2953 fps | 98.7% |
| Shooters World Precision | <<locked>> | 82% | 49,588 psi | 90% | 2943 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 47,065 psi | 85% | 2927 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 49,197 psi | 89% | 2999 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 49,226 psi | 89% | 2844 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 48,849 psi | 88% | 2897 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,631 psi | 88% | 3022 fps | 96.1% |
| Somchem S355 | <<locked>> | 84% | 48,022 psi | 87% | 2940 fps | 99.9% |
| Somchem S365 | <<locked>> | 92% | 47,688 psi | 86% | 3022 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 46,717 psi | 85% | 2946 fps | 96.5% |
| Vihtavuori N150 | <<locked>> | 86% | 49,124 psi | 89% | 2920 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 47,529 psi | 86% | 2953 fps | 99.2% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,269 psi | 89% | 2979 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 88% | 46,804 psi | 85% | 2953 fps | 99% |
| Vihtavuori N555 | <<locked>> | 98% | 49,922 psi | 90% | 3071 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 47,079 psi | 85% | 2923 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 48,602 psi | 88% | 3015 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,975 psi | 78% | 3087 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 49,922 psi | 90% | 2995 fps | 96.1% |
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 3100 | <<locked>> | 92% | 38,638 psi | 70% | 2779 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 46,543 psi | 84% | 2887 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,027 psi | 63% | 2713 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 80% | 44,135 psi | 80% | 2851 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,440 psi | 80% | 2881 fps | 99.9% |
| Alliant Reloder-16 | 37 gr | 80% | 34,461 psi | 62% | 2726 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,015 psi | 71% | 2867 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,529 psi | 52% | 2572 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,666 psi | 66% | 2815 fps | 95.7% |
| Alliant Reloder-26 | 44.9 gr | 88% | 35,288 psi | 64% | 2825 fps | 96.1% |
| Bofors RP3 | <<locked>> | 80% | 44,556 psi | 81% | 2887 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 41,930 psi | 76% | 2799 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 44,991 psi | 81% | 2894 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 82% | 39,784 psi | 72% | 2831 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 84% | 45,585 psi | 82% | 2913 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,039 psi | 58% | 2621 fps | 97.3% |
| Hodgdon Superformance | <<locked>> | 84% | 41,655 psi | 75% | 2900 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,963 psi | 49% | 1722 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,412 psi | 84% | 2890 fps | 99.5% |
| IMR 4350 | <<locked>> | 86% | 42,569 psi | 77% | 2831 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,712 psi | 74% | 2772 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 33,707 psi | 61% | 2664 fps | 96% |
| Lovex S062 | <<locked>> | 80% | 46,644 psi | 84% | 2890 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,450 psi | 70% | 2726 fps | 96.1% |
| Lovex S070 | <<locked>> | 82% | 38,943 psi | 70% | 2756 fps | 95% |
| Lovex S071 | <<locked>> | 96% | 37,014 psi | 67% | 2743 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 46,833 psi | 85% | 2933 fps | 99.8% |
| Norma MRP | 45.6 gr | 92% | 40,756 psi | 74% | 2930 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 35,041 psi | 63% | 2717 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 84% | 38,885 psi | 70% | 2815 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,572 psi | 50% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,078 psi | 82% | 2871 fps | 97.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,466 psi | 75% | 2933 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,693 psi | 63% | 2730 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 36,564 psi | 66% | 2799 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 41,989 psi | 76% | 2828 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 94% | 46,064 psi | 83% | 2969 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 82% | 41,930 psi | 76% | 2799 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,450 psi | 70% | 2726 fps | 96.1% |
| Shooters World Precision | <<locked>> | 80% | 46,644 psi | 84% | 2890 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,943 psi | 70% | 2756 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,902 psi | 78% | 2877 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,439 psi | 79% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,045 psi | 72% | 2720 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,643 psi | 83% | 2959 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 42,482 psi | 77% | 2831 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 31,546 psi | 57% | 2667 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 43,918 psi | 79% | 2890 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 40,480 psi | 73% | 2759 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 36,390 psi | 66% | 2717 fps | 96.7% |
| Vihtavuori N165 | <<locked>> | 96% | 43,091 psi | 78% | 2861 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 35,853 psi | 65% | 2713 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 84% | 31,314 psi | 57% | 2657 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,795 psi | 65% | 2687 fps | 98.7% |
| Winchester 760 | <<locked>> | 82% | 39,784 psi | 72% | 2831 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,035 psi | 49% | 2598 fps | 95% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,456 psi | 84% | 2933 fps | 95.2% |
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 57 powders for .243 Ackley Improved loaded with the .243 | 95gr | Berger VLD Target. Alliant Reloder-26 delivers the highest muzzle velocity at 3,107 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,107 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 57 of the 57 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 95.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Hodgdon TrailBoss 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, Norma MRP, Alliant Reloder-16 rank at the top here: for .243 Ackley Improved with the .243 | 95gr | Berger VLD Target 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.