I have two Hart barrels, both shoot extremely well. The 7mm barrel was delivered slightly heavier in contour than what was spec'd. Hart offered to re-contour the barrel to specification at no cost to myself. I ended up keeping the slightly heavier contour based on my 'Smith's reccomendation and I'm well satisfied with the rifle. Neither barrel fouls notably and both shoot multiple weight bullets of various construction to nearly identical POI's.
David
