Now to answer Rochelle's question ..the new ones aren't as tough as the pre bean counter Corelockts that Remington produced. I have not had the opportunity to use the new CoreLock Ultra since their availability in my area seems to be limited. For a 30-06 any of the tons of premium factory loads will do the trick except Ballistic tips or Silvertips and that applies to the magnums as well with exception of the Ultra mags which require even more attention to bullet construction.