Load Specifications
Load data in caliber .243 Ackley Improved with .243 | 95gr | Nosler Ballistic Tip Hunting bullet and 59 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 3100 | <<locked>> | 98% | 47,079 psi | 85% | 2953 fps | 98.1% |
| Accurate 4064 | <<locked>> | 82% | 49,197 psi | 89% | 2930 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 49,458 psi | 90% | 3022 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 84% | 49,893 psi | 90% | 2959 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 46,949 psi | 85% | 2923 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 47,108 psi | 85% | 3018 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 86% | 47,863 psi | 87% | 3051 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 49,980 psi | 90% | 3041 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,601 psi | 86% | 3041 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,481 psi | 75% | 2936 fps | 97.5% |
| Alliant Reloder-26 | <<locked>> | 96% | 46,992 psi | 85% | 3104 fps | 99.3% |
| Bofors RP3 | <<locked>> | 82% | 47,442 psi | 86% | 2940 fps | 100% |
| Bofors RP7 | <<locked>> | 86% | 47,413 psi | 86% | 2910 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 82% | 47,877 psi | 87% | 2946 fps | 99% |
| Hodgdon H414 | <<locked>> | 88% | 48,312 psi | 87% | 3009 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 86% | 48,501 psi | 88% | 2969 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 47,326 psi | 86% | 2953 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 47,848 psi | 87% | 3028 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,027 psi | 65% | 1923 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 49,052 psi | 89% | 2936 fps | 99.7% |
| IMR 4350 | <<locked>> | 90% | 48,080 psi | 87% | 2943 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 49,139 psi | 89% | 2946 fps | 97.4% |
| IMR 4831 | <<locked>> | 92% | 49,937 psi | 90% | 3012 fps | 99.6% |
| Lovex S062 | <<locked>> | 82% | 49,269 psi | 89% | 2936 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 48,994 psi | 89% | 2943 fps | 98.6% |
| Lovex S070 | <<locked>> | 90% | 50,009 psi | 90% | 2982 fps | 97.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,916 psi | 76% | 2848 fps | 96.8% |
| Norma 203B | <<locked>> | 82% | 49,792 psi | 90% | 2989 fps | 99.9% |
| Norma MRP | <<locked>> | 96% | 46,615 psi | 84% | 3054 fps | 97% |
| Norma URP | <<locked>> | 90% | 48,544 psi | 88% | 3005 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 90% | 47,166 psi | 85% | 2992 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,622 psi | 66% | 1969 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 47,906 psi | 87% | 2927 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 47,427 psi | 86% | 3048 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 49,124 psi | 89% | 3038 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 47,805 psi | 87% | 3054 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 47,616 psi | 86% | 2936 fps | 100% |
| Rottweil R 905 | <<locked>> | 96% | 48,820 psi | 88% | 3018 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 86% | 47,413 psi | 86% | 2910 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 48,994 psi | 89% | 2943 fps | 98.6% |
| Shooters World Precision | <<locked>> | 82% | 49,269 psi | 89% | 2936 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 50,009 psi | 90% | 2982 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 48,878 psi | 88% | 2995 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 49,269 psi | 89% | 2841 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 48,559 psi | 88% | 2890 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,370 psi | 88% | 3012 fps | 95.9% |
| Somchem S355 | <<locked>> | 84% | 48,066 psi | 87% | 2940 fps | 99.9% |
| Somchem S365 | <<locked>> | 92% | 47,398 psi | 86% | 3015 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 49,792 psi | 90% | 3002 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 86% | 48,863 psi | 88% | 2913 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 47,210 psi | 85% | 2943 fps | 99.1% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,979 psi | 89% | 2972 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 82% | 49,951 psi | 90% | 2920 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 49,792 psi | 90% | 3005 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 98% | 49,632 psi | 90% | 3061 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 46,847 psi | 85% | 2917 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 48,312 psi | 87% | 3009 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,772 psi | 77% | 3077 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 49,676 psi | 90% | 2989 fps | 96% |
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% | 38,406 psi | 70% | 2772 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 46,209 psi | 84% | 2881 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,766 psi | 63% | 2707 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 80% | 43,874 psi | 79% | 2844 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,179 psi | 80% | 2871 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,214 psi | 62% | 2717 fps | 96.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,740 psi | 70% | 2858 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,717 psi | 85% | 2976 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,529 psi | 52% | 2569 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,477 psi | 66% | 2808 fps | 95.5% |
| Alliant Reloder-26 | 44.7 gr | 88% | 35,085 psi | 63% | 2818 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 44,222 psi | 80% | 2877 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 41,959 psi | 76% | 2799 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 44,976 psi | 81% | 2890 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 42,380 psi | 77% | 2887 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 84% | 45,643 psi | 83% | 2913 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,792 psi | 58% | 2612 fps | 97.1% |
| Hodgdon Superformance | <<locked>> | 84% | 41,423 psi | 75% | 2890 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,832 psi | 49% | 1719 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,093 psi | 83% | 2881 fps | 99.5% |
| IMR 4350 | <<locked>> | 86% | 42,308 psi | 77% | 2825 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,741 psi | 74% | 2772 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 33,663 psi | 61% | 2664 fps | 96% |
| Lovex S062 | <<locked>> | 80% | 46,354 psi | 84% | 2884 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,203 psi | 69% | 2717 fps | 96% |
| Lovex S070 | <<locked>> | 82% | 38,972 psi | 71% | 2753 fps | 95% |
| Lovex S071 | <<locked>> | 96% | 36,738 psi | 66% | 2733 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 46,528 psi | 84% | 2927 fps | 99.7% |
| Norma MRP | 45.4 gr | 92% | 40,538 psi | 73% | 2920 fps | 95% |
| Norma URP | <<locked>> | 80% | 34,795 psi | 63% | 2707 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 84% | 38,638 psi | 70% | 2808 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,427 psi | 50% | 1762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,817 psi | 81% | 2864 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,191 psi | 75% | 2923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,461 psi | 62% | 2720 fps | 95.8% |
| ReloadSwiss RS 70 | 41.3 gr | 82% | 36,318 psi | 66% | 2789 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 41,698 psi | 75% | 2822 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 94% | 45,803 psi | 83% | 2959 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 41,959 psi | 76% | 2799 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,203 psi | 69% | 2717 fps | 96% |
| Shooters World Precision | <<locked>> | 80% | 46,354 psi | 84% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,972 psi | 71% | 2753 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,888 psi | 78% | 2877 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,439 psi | 79% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,074 psi | 73% | 2717 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,368 psi | 82% | 2953 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 42,148 psi | 76% | 2822 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 31,270 psi | 57% | 2657 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 43,656 psi | 79% | 2884 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 40,205 psi | 73% | 2753 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 36,143 psi | 65% | 2707 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 45,658 psi | 83% | 2910 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 47,036 psi | 85% | 2874 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,882 psi | 65% | 2713 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 84% | 31,053 psi | 56% | 2648 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,578 psi | 64% | 2680 fps | 98.6% |
| Winchester 760 | <<locked>> | 84% | 42,380 psi | 77% | 2887 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,747 psi | 52% | 2661 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,209 psi | 84% | 2923 fps | 95% |
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 80 powders for .243 Ackley Improved loaded with the .243 | 95gr | Nosler Ballistic Tip Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 3,104 fps; across all powders the maximum-charge window runs from 1,923 fps to 3,104 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 80 of the 80 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 1:9.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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 | Nosler Ballistic Tip Hunting they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate High Country, Accurate MAGPRO, ADI AR 2213 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.