I have been barreling rifles for 54 years,,Have done many hundreds,,Never used mcgowen barrels because they just dont win matches,,A customer demanded a mcgowen barrel..It was a 4 countour chromoly 14 twist for 22-250,,It would not stay in 2 inch at 100 yards,,A borescope showed rough chatter markes thru the bore,,,I sent it back,,,They replaced it,,The replacement with 55 gr bullet at 100 yards turned the bullet sideways ripping a slot in the target,,A third barrel customer same barrel barrel shoots inch and a half at best,,I had to warranty these jobs as these were good customers,,They switched to bartlin and boy are they happy campers,,,Any customer wanting a mcgowen barrel in this shop will be sent elswhere,,I have done well on the lower end barrels with wilson ,,They are 40 bux less and are twice the barrrel,,,Mel Doyles Gunshop