A friend of mine who is a little better off with their ability to throw gun money around is done with his Proof barrel. He chambered it in 28 Nosler and was never able to get it to fly to his liking. He pulled the barrel and went back to a Krieger and now he's happy. He said I could have the barrel and see if I could get it to fly. I don't want a 28 Nosler and was looking at cartridge options to re-chamber it in. I was thinking maybe a 7 saum if I decided to mess with it at all. So what say you is it the cartridge or the barrel. I know that's a tough ask but what the heck. I know its not the shooter or the load. I have since shot the rifle now that its been rebarreled and its a shooter. Also is there anything I'm missing looking at cartridge dimensions seems like a SAUM would be the only option if I wanted to change cartridges. OK let me have it.