I have sent several guns to JES reboring and have been happy with everyone he has done for me.
The one thing that I don't understand is choosing between 3,4 or 5 groove cut rifling. My 375 Win is 3 groove and the rifling looks a little different but man does it shoot. I will send him another 30-30 one of these days to turn into 375 for no other reason than it is probably my favorite gun to shoot and everyone should have a duplicate of their favorite rifle.
My next project for JES is a Charles Daly 98 mauser in 308. I love that platform and need a little help deciding between turning that 308 into a 338-08(338 Federal) or a 358 Winchester....maybe even a big bore. Has anybody out there taken a 308 out to 40 cal? My mind is wide open.
I would also like for someone to explain to me the pros and cons of 3 vs 4 vs 5 groove rifling and recommended uses for each.