Thread: .223 Ackley Improved

Originally Posted by Wingman

Yip one of my favourite cals..
I have a Rem 700P LTR in .223 AI. 20" 1-9" twist factory barrel rechambered.

I run 69gr TMKs at 3200fps and it is crazy flat and hard hitting.
The cases are easily fireformed by just shooting std .223 in your new improved chamber. .223 AI makes the most of the .223 rem case by blowing out to an almost straight walled case and pushed the shoulder forward a bit at the same time as forming the 40 degree angle. It extends case life and will give you a few hundred more fps too.









Im not sure how well it will go in your 788 asa they have quite a short mag. you need to load them long and hve quite a long throat cut if you want to make the most of the call. Ideally you'd run the heavier bullets, 65gr to 90gr pulled out really long to get the most from the cal but you could load them to 788 mag length and use 40gr to 55g for varminting or well placed shots on larger game.

Ive just added an Atlas works bottom metal and AI mag to mine for additional COAL to really get it singing and its devastating on critters. Hitting goats with it sounds like a grenade going off.

1/2 MOA at 200y

Could you provide a run down on your fire forming. Seriously thinking of doing this with a T3. Thanks.