Looks like PT&G has a custom reamer now available for wanting a .350 Legend that can shoot the more plentiful .358 bullets. For copyright/tradename reasons they had to call this quasi-wildcat the .358-AR rather than the .358 Legend.

http://pacifictoolandgauge.com/18931...er-reamer.html


Here's a video of a guy that build one up on an Axis using a Black Hole Weaponry .358" caliber 1-11" twist barrel chambered with this reamer. As you'll see, going this route with the larger bore diameter and slightly different chamber cut the accuracy goes to hell with factory ammo using .355" bullets. As such, pick your poison - factory loads or handloads as you aren't going to be able to have it both ways with .358" bullets.