Load Specifications
Load data in caliber .243 Ackley Improved with .243 | 95gr | Barnes TSX bullet and 66 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Norma MRP.
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% | 49,052 psi | 89% | 2910 fps | 96.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,284 psi | 89% | 2999 fps | 98.5% |
| Accurate 4064 | <<locked>> | 82% | 47,688 psi | 86% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 47,819 psi | 87% | 2999 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 84% | 48,747 psi | 88% | 2946 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 96% | 49,588 psi | 90% | 3038 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 49,719 psi | 90% | 3038 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 49,719 psi | 90% | 3038 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 48,965 psi | 89% | 2966 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 49,168 psi | 89% | 2986 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 92% | 49,226 psi | 89% | 3068 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 86% | 46,543 psi | 84% | 3031 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 49,037 psi | 89% | 3028 fps | 96% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,298 psi | 89% | 3077 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,209 psi | 84% | 3018 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,451 psi | 73% | 2917 fps | 97.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 49,313 psi | 89% | 3153 fps | 99.6% |
| Bofors RP3 | <<locked>> | 84% | 49,313 psi | 89% | 2979 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,298 psi | 89% | 3077 fps | 96.2% |
| Bofors RP7 | <<locked>> | 88% | 49,443 psi | 89% | 2956 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 84% | 49,879 psi | 90% | 2989 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 88% | 47,355 psi | 86% | 2995 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 86% | 47,645 psi | 86% | 2959 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 49,487 psi | 90% | 2995 fps | 100% |
| Hodgdon Superformance | <<locked>> | 88% | 46,876 psi | 85% | 3015 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 65% | 1926 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 48,196 psi | 87% | 2927 fps | 99.7% |
| IMR 4350 | <<locked>> | 90% | 47,195 psi | 85% | 2930 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 48,022 psi | 87% | 2930 fps | 97.2% |
| IMR 4831 | <<locked>> | 92% | 48,820 psi | 88% | 2999 fps | 99.5% |
| Lovex S062 | <<locked>> | 82% | 48,211 psi | 87% | 2923 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 47,979 psi | 87% | 2930 fps | 98.4% |
| Lovex S070 | <<locked>> | 90% | 48,950 psi | 89% | 2969 fps | 97.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,553 psi | 73% | 2828 fps | 96.5% |
| Norma 203B | <<locked>> | 82% | 48,486 psi | 88% | 2969 fps | 99.9% |
| Norma MRP | <<locked>> | 98% | 48,559 psi | 88% | 3100 fps | 97.5% |
| Norma URP | <<locked>> | 90% | 47,500 psi | 86% | 2992 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 82% | 49,124 psi | 89% | 2999 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 92% | 49,530 psi | 90% | 3041 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 66% | 1972 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 46,978 psi | 85% | 2913 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 49,588 psi | 90% | 3091 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 47,979 psi | 87% | 3022 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 46,833 psi | 85% | 3041 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 82% | 49,879 psi | 90% | 2936 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 49,516 psi | 90% | 2979 fps | 100% |
| Rottweil R 905 | <<locked>> | 96% | 47,761 psi | 86% | 3002 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 88% | 49,443 psi | 89% | 2956 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 47,979 psi | 87% | 2930 fps | 98.4% |
| Shooters World Precision | <<locked>> | 82% | 48,211 psi | 87% | 2923 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 48,950 psi | 89% | 2969 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 47,935 psi | 87% | 2982 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 48,066 psi | 87% | 2831 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 47,572 psi | 86% | 2877 fps | 97.3% |
| Somchem S355 | <<locked>> | 86% | 49,661 psi | 90% | 2972 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 49,487 psi | 90% | 3054 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 48,660 psi | 88% | 2989 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 86% | 47,863 psi | 87% | 2904 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 49,298 psi | 89% | 2989 fps | 99.4% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,964 psi | 87% | 2959 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 82% | 48,994 psi | 89% | 2913 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 48,718 psi | 88% | 2992 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 98% | 48,327 psi | 87% | 3045 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 49,197 psi | 89% | 2963 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 47,355 psi | 86% | 2995 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,626 psi | 75% | 3054 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% | 45,832 psi | 83% | 2848 fps | 95.9% |
| Accurate 3100 | <<locked>> | 92% | 37,072 psi | 67% | 2749 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 44,730 psi | 81% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,518 psi | 61% | 2684 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 43,047 psi | 78% | 2835 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 94% | 46,528 psi | 84% | 2976 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,354 psi | 84% | 2972 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,354 psi | 84% | 2972 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,178 psi | 78% | 2858 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,180 psi | 84% | 2927 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,359 psi | 60% | 2700 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,507 psi | 68% | 2831 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,759 psi | 83% | 2963 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,919 psi | 83% | 3012 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,124 psi | 53% | 2595 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,462 psi | 64% | 2785 fps | 95% |
| Alliant Reloder-26 | 44.8 gr | 88% | 33,924 psi | 61% | 2792 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 43,047 psi | 78% | 2861 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 45,919 psi | 83% | 3012 fps | 95.3% |
| Bofors RP7 | <<locked>> | 84% | 43,352 psi | 78% | 2835 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 43,642 psi | 79% | 2871 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 41,104 psi | 74% | 2864 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 84% | 44,454 psi | 80% | 2894 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,850 psi | 56% | 2592 fps | 96.8% |
| Hodgdon Superformance | <<locked>> | 86% | 43,700 psi | 79% | 2946 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,832 psi | 49% | 1722 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,252 psi | 82% | 2871 fps | 99.4% |
| IMR 4350 | <<locked>> | 88% | 44,367 psi | 80% | 2874 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,496 psi | 77% | 2815 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 32,358 psi | 59% | 2635 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 45,295 psi | 82% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,188 psi | 67% | 2700 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 40,364 psi | 73% | 2792 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 37,898 psi | 69% | 2766 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 45,556 psi | 82% | 2917 fps | 99.6% |
| Norma MRP | 46.5 gr | 94% | 42,366 psi | 77% | 2969 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 33,779 psi | 61% | 2687 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 45,832 psi | 83% | 2936 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 37,695 psi | 68% | 2792 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,108 psi | 49% | 1762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,888 psi | 79% | 2851 fps | 96.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,972 psi | 72% | 2904 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,359 psi | 60% | 2700 fps | 95.4% |
| ReloadSwiss RS 70 | 41.4 gr | 82% | 35,404 psi | 64% | 2772 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 46,847 psi | 85% | 2884 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,480 psi | 73% | 2805 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 94% | 44,744 psi | 81% | 2946 fps | 95% |
| Rottweil R 907 | <<locked>> | 84% | 43,352 psi | 78% | 2835 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,188 psi | 67% | 2700 fps | 95.7% |
| Shooters World Precision | <<locked>> | 80% | 45,295 psi | 82% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,364 psi | 73% | 2792 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,669 psi | 75% | 2858 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,293 psi | 77% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,611 psi | 75% | 2756 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 41,104 psi | 74% | 2808 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 30,240 psi | 55% | 2635 fps | 97.9% |
| Somchem S385 | <<locked>> | 92% | 42,250 psi | 76% | 2858 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 39,204 psi | 71% | 2736 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 35,172 psi | 64% | 2690 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 98% | 44,628 psi | 81% | 2894 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 45,759 psi | 83% | 2858 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,577 psi | 63% | 2684 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 86% | 31,966 psi | 58% | 2680 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,679 psi | 63% | 2664 fps | 98.4% |
| Winchester 760 | <<locked>> | 84% | 41,394 psi | 75% | 2871 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,485 psi | 50% | 2618 fps | 95.3% |
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 66 powders for .243 Ackley Improved loaded with the .243 | 95gr | Barnes TSX. Alliant Reloder-26 delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,153 fps. Accurate 3100 gives the best case fill at 100 %, and 66 of the 66 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. Accurate 3100, Alliant Reloder-22, 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 Reloder-26, ReloadSwiss RS 70, Norma MRP rank at the top here: for .243 Ackley Improved with the .243 | 95gr | Barnes TSX 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.