my opinon only.. for target, goodien, they are lapped, but take care not to overload it or make any mistakes, they are softer steel and can bulge at a dovetail for instanace if you double load or shoot your ramrod, short start... they are not swampped to my knowledge and heavy,. but shoot unbeliveabley well.. getz barrels are accurate and work very well with quite abit of abuse, as in not cleaning right after shooting,or hunting ducks on a damp day, or overloading and other problems, they are very tough hard steel. .. they can be swampped, custome ordered to caliber, and are lighter if you get swamped barrels.. .. for instance i lput together the chambers mark silver made in a 16 gauge shotgun and a .62 cal rifle with square bottom wide grooves.. .. i could have gotten inter chanegable swamped barrels they are so close if i wanted on one gun, but wanted two guns... so in my book goodien for target, getz for hunting... dave..