I really can't think of anything more to do to my AR, and I've got all the pistols I really want, so I'm thinking my next project should be a nice bolt gun. I'll probably look for a used Remy 700 or just a barreled action and build it from there. The biggest question is that of the cartridge. I know that there are lots of great niche cartridges out there, but is there any practical advantage over the .308? Realistically, I'll be punching paper at no more than 600 yards, I don't hunt, and until the S really Hits TF, paper punching is all it will do. The advantages I can see of the .308: Commonly available Great factory ammo available Lots of bullet choices Lots of load data available Discuss.