Originally Posted by ;59969
I'm looking for some load suggestions for the the 243 Ackley Improved cartridge. My Rifle has a 26" Hart barrel 1 in 9" twist. I would like to use bullets from 85-grains to 100-grains. The Nosler 90 and 95 grain Ballistic tip bullets look interesting. What do you suggest for powder. I have tried IMR4350 and have not been pleased with the results. What do you think about H4831SC? Thank you
To revive an old thread; Because I just got back from the range today shooting my 243 AI, I have this to say about it:
I have taken my reloading data from here: .243 Win + .243 AI Cartridge Guide
Scroll to the bottom for Ackley data.
I'm still kind of perfecting the load but so far the 47.5 grains of H4831SC under a 105 Berger VLD have yielded the best results. With this load, I'm getting 5 shot groups around 1.00" at 200 yards. Velocities are averaging 3236 fps. This gun does not seem to care if the barrel is clean or foul, cold or hot. Same results.
I would highly recommend a 1:8 twist if using more than an 85 grain bullet. But a 1:9 should handle the 85's no problem. I am using a Bruno Custom with Krieger HV 26" barrel, Bat Machine action, McMillan HTG stock, and Badger Ordnance Bottom metal, Jewel trigger.
Just like my 7mm Rem Mag, the VLD's like to be seated out to the lands, and it seems the faster you can safely push them the more accurate they are. I am told this is not always the case but so far with load development for two different rifles using Bergers, it has been for me. Fortunately, with these two rifles, the BO (Accuracy International) mags don't limit OAL. Not the case with my 308.
Already took a nice Kansas 12 point white tail in November with this rig. He just bounced off the ground. Only 100ish yard shot though. I really like this cartridge!
Lapua Brass: trimmed, neck turned, .270 neck bushing sized.
47.5 grains H4831SC
Berger VLD 105 Hunting bullet
Federal GM210M match primer (hand seated)