Earl, I agree with build what you want. However with one post he may or may not have a lot of experience and his friends may be telling him that a 243 is a sissy cartridge. If that is the case some reinforcement of there is nothing wrong with what you have was given by rob. So I qualified my statement with some support for rob and why. I like the 308 and 3006 family of cartridges. Having to prove your a man is not the job of a cartridge. If he wants to bang steel or make small groups at a longer range then the 243 trumps all of the cartridges you mentioned. For a beginner, if Mr. Snipershark is one, he may be grateful for the advice rob passed on.