Check me on this, but after studying specs it looks like a 223 Rem could be rebored and chambered to 357 MAXimum. Should clean up the 223 chamber and then an extractor from the 357 Mag would be fitted. I have a 223 Ruger No.1 Varmint 24” barrel I’ve considered doing. Interesting if for bench & target shooting, but a No.1A with open sights might be more ‘usable’. Thoughts?
Or use star line .223 basic brass and cut the chamber up to 1.8” and rebore to .358 to make a .357 Rimless. I had MGM chamber me an Encore and Remington 700 in the .357 Rimless. It’s pushing 180 gr SSP at 2600 FPS. With 35 gr AA 1680.
Another option is same concept but cut to 1.6” and make 357 AR straight which clones the 357 Max in .223 brass. Either way you would save the retro of the extractor and Brass availability’s.
