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thanks uncle
hooligan, if a barrel shoots .5 groups at a hundred with factory ammo I woulndt do much to the bore. maybe if you can see rough edges in the muzzle just a few shots with some fine compound smooth them over to make cleaning easy.
Iread a interesting arcticle on firelapping rifle barrels. the author said that he only fired 12 shots and it was overdone in the throat area. so firing a few shots and checking the throat dimentions with a borescope is critical. what he basically said was one only needs to fire lap enough to give the barrel a slight taper from beginning to end.
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