Thread: .223 Ackley Improved

Originally Posted by johnd

Yeah mag length is an issue with around 58.25 mm OAL available. I could rely on single feed for long OAL bullets and keep 55 / 60 grainers stacked up in the mag for cou de gras. @Wingman is there a difference between AI and the .223 40' or is that the same beast?

Yes I was single feeding mine up until a few weeks ago when I did the detachable mag mod. A Tikka T3 would be a better donor for that cal, long mags and the .223 Rem comes in a 1-8 twist option. A .22 terminator could be considered on that platform too as you will have the same issues with your 788 mag in that cal too.

There were about 4 versions of the .223 Imp chamber ream with slight variations in neck lengths and dimensions but once brass is fire formed to your chamber you should anneal it and just neck size regardless of chamber variant used. The brass lives a very long life.

I could load mine hotter as there is plenty of room in the case still with my 2206H loads im limited with a 20" barrel so basically maxing out what the 69gr will do in my tube.
Improved chambers all benefit from longer mags and barrels as well as faster twists to make it a worth while mod.

Your bolt face and action strength will cope with a single feed 224 Valkyrie but again your mag wont. It wont be wide enough for the fatter case even if you modded the feed lips.