As far as Apex goes, my thoughts are that there have not been enough rounds down range yet, and it's still too early to tell, unless CVA did large caliber 1000-round-plus frame testing (usually done only on the barrels) and will share their data. McGarity himself said that CVA was having problems getting the Apex frame into the hands of the consumer, so I doubt that there is anyone out there that has fired enough heavy recoil centerfire ammunition to really test the Apex frame yet.
I have .270, .45-70 Govt., and 300 Win Mag barrels that I have fired on a single frame, but less than 200 rounds total...I mean who REALLY wants to sit there and pound through a couple of hundred rounds of those calibers at the bench anyway...too costly for the wallet and the shoulder! My barrels still lock up solidly and tight, but they are still new...ask me again after a couple of years of range and field use. ...CC...