Tikka T3 .223 on Steroids , anyone gone .223AI?

[NB Rifles]

Am thinking I would like to have it chambered for the AI with a good throat so I can shoot the 80gr bullets with a little more speed. These long bullets take up a lot of case space. I understand the magazine will needed to be modified but lots of directions on doing that on the net. Does anyone know if the fired AI case will neck size in a regular .223 neck size only die?
Any down sides?
Thanks.

 

[Sask_Hunter]

I've used a rcbs 223 neck die to size 223 AI cases and have also used the hornady universal 22 cal neck die. I would just order the proper set of dies. The 223AI is a good little chambering.