Re: Questions on my build
100 yd groups don't reall mean much as far as LR goes. It might even shoot better MOA @ 200 or 300. But the real test will be down range, and if it's inconsistent on the long shot it could be the load (if you have good 200-300 yd groups)
With a custom barrel and good smith, you "might" have got a .3 shooter. One
of the benefits of a custom is that they break-in and clean easier and foul less than factory barrels.
I wouldn't worry, sounds like you got a good shooter.