what about the nosler solid,or the hornaday dgb,or a squares solid,i have shot barnes by the thousands out of a thin german weatherby with no problems to barrel.what does it do to the barrel to mess up the barrel joining,when the barrel is thicker.i am puzzled.i am thinking science copper is softer than steel compresses easyer,why would a steel core not do the same when steel gives less has anyone noticed in the cross section there seems no differance between the two,the steel does not show signs of compression from rifleing therefore not giving ,i asked merkel the say barnes is safe in thier rifles,zoli states the same.thats all the info i have