Well I called T/C today and picked thier brain. I found out that my 7mm Rem.Mag has a 1:9 twist. I suppose this would be the same with all thier 7mm's and may with a few other calibers. Now the down side I also found out that my .45 has a 1:20 twist, I can't win---- :cry: Well anyway I thought that I would pass this tidbit of info. about the 7 on. Have a good one, robert