I have a new Weatherby vanguard 223 with a 20" threaded varmint weight barrel that is factory cerekoted Grey. I've thought about having them rebore it to 350 legend so I could use it to shoot heavy subsonic cast bullets. Does the JES process mess up the factory finish much? I'd hate to ruin a brand new cerekote job when I could send in something else instead. I wonder how fast of twist they could do.
Bb
