I have a 300 ultra with a rockcreak barrel i get 2986 ft out of a 26'' barrel 230gr OTM. I was over 3100 but brass lasted three shot. So backed off in powder 5gr. now i shoot 2986 with ES of 6. I have put 400 rounds through it from oct. to now. That is not good. I ges the 300 ultra barrel is only good to 700 to 800 rounds. I like to shoot to much to have a rifle that is only good to 800 rounds so when i rebarrel it will be a 338 Norma. I got 700 230 gr otm at one time and 24 pounds of h-1000 so when the bullets are gone that will be it for the 300 ultra. It sounds like you to shoot alot like me so get a 338 there good for 2000 rounds if you don,t get them hot.