after trying to resolve my (inherited) rifle's grouping problems I tired to get a good look at the crown (its a BSA with integral muzzle brake so not easy!)
this is the best photo I can get but it just doesnt look particularly uniform.
I dont have anything to compare to it as the other centre fire I have has a much smoother radius but without the muzzel brake there is more material between inner and outer diameter
does anyone have any thoughts?
could this be a problem?