Hey guys. A whole back LRH member longtimelongranger turned me onto cutting edge bullets D62 bullet. I ordered some and am waiting to load them until my gunsmith gets finished fitting my new PT&G fluted bolt to my Sendero action and rereams it to the proper depth for proper headspace so I can measure the overall length to figure out where to start off seating my bullets. Anyway the gunsmith I deal with has been gunsmithing for forty years and the shop owner had been in the industry for fifty years and he told me that monolithic solids like the cutting edge bullets would eat the rifling right out of my barrel! He said he has rarely seen a barrel shoot more than a hundred rounds of monolithic solid copper bullets that wasn't shot out! He said with mine being a factory barrel I could keep shooting conventional bullets, I.e. nosler, Berger for years before rebarreling or I could shoot about fifty or so copper monolithics through it and need a new barrel. Surely this isn't do?! They look like precision high quality projectiles! Is this just old wisdom from back in his day since he's so old and reluctant to change or is this true? After all his work and blue printing and trying my action I don't want to throw all that money away in fifty trigger pulls!!! Thanks guys and have a great day.