That often happens with the same barrel without O rings. Proved over a century ago.groups. much tighter groups at a distance.
How many O rings were used, what size and spacing were they?
That often happens with the same barrel without O rings. Proved over a century ago.groups. much tighter groups at a distance.
All stress from each hole can be relieved with heat and cooling treatments. Then drill the next one.Drilling 1 hole in a rifle barrel can potentially leave various stresses in the steel.
Would think drilling or fluting more would leave multiple times these stresses.