I have a little bit of info on this that hopefully is helpful for anyone thinking about 223ai, or already running one
@Kadams1563
My build specs:
CDG short action with .378" bolt face
ARC Xylo chassis
PVA 26" M24 barrel 7tw
Accurate Mag AICS 223 magazine
I had to file about .20" off my mag latch, because I bought this chassis used and it had the long mag latch installed. I spoke with Bella and she informed that they will be making a shorter version (shorter than their standard mag catch) of the mag catch (1.90"), just for 223 mag's, once they get caught up. I was able to get my mag to latch properly and all of 75 rounds of 223, fire form loads fed flawlessly. I have 200 pieces of once fired LC brass, set aside, that I intend to convert to 223ai brass and I am still working through that process. But last night I made one 223ai dummy round to see how well it would feed. I am shooting Hornady 75 grain BTHP bullets and I seated it .020" off the lands at 1.9410" CBTO (2.310" COAL). If I ran the bolt slowly it would not feed. I think it was getting hung up on where the shoulder was trying to enter the chamber. But I'm not exactly sure. I just know that the bolt would stop about a 3/4" before the round was fully chambered.
However, if I ran the bolt fast, it fed well. I tried this multiple times and with only 1 round (representing last round) in the mag and with a full mag (loaded with regular 223 under the 223ai dummy round).
I know this is a very small sample (of 1) but I feel confident that once I am done fire forming brass and start loading the 223ai rounds that they will all feed as intended.
I hope this is helpful.
Cheers