223 basic from starline

[Yoda]

Ok I did a search and couldn't find anything on the 357 max using the 223 basic brass from starline, . I have a Steven's model 200 in 223 CF that I would love to change to 357 maximum rimless has anybody done this ? With savage now offering the wolverine in the 450 bushmaster using there 110 action I seen no reason why the 223 basic could not be used to build a rimless Max. Can anyone at least point me somewhere that is attempting this. It has to be feasible.. thank u for your time.

[Robinhood]

Do it.
https://www.starlinebrass.com/brass-cases/223-Basic/
The webpage says this is what the brass is for.

[cowboybart]

I am doing this on an AR platform. It is very doable in a bolt gun. 223 Basic is the best wat to get the brass. However because I have a 5 gallon bucket of 223 brass, I am necking them up. About 33% failure rate (split necks). Not a big deal as those will be cut down for 300 Whisper (BO) brass.