I have a R700 long action in 308 and want to drop it into a mcree or other chasis stock. If I do this, then can i use 308 ai mags or will I have to modify the chasis to make it work?
You are going to need to run 300 WM magazines from AI, most likely bend the feed lips in and install a block in the back of the magazine to fill it up. Its a hassle.