Quote Originally Posted by J.Baker View Post
Haven't played with it at all personally, but supposedly Savage has plans to offer it in a few models that will probably be announced for 2020. One thing that still baffles me with this cartridge is why they (Winchester) opted for the 9mm groove diameter (0.355") rather than a standard .35 caliber groove diameter (0.357") on the SAAMI reamer print. This also amounts in the bore diameter being about 0.003" smaller in diameter than a standard .35cal bore (0.346 v. 0.349").

Based on some reading I've done around the web more than a few folks have run into chambering issues when loading .358" diameter rifle bullets where they can't get the bolt fully closed due either to lack of freebore or the lead-in angle.
Good to know. That kinda puts a damper on me building one. Not a lot of good 9mm bullet choices for loading that cartridge. No way I want a build that I'm forced to use factory ammunition or load "pistol" bullets.