Howdy everyone,
My first (and thus far, only) rifle is a .300 Win Mag. Would I get it again? No. It's much more accurate than I am and everything works perfectly, but I would not buy it as my first rifle again. Why? Because it made me flinch. Still does. I had shot guns before, but by and large they were .22's. I'm getting to the point where I can shoot 1.5-2" groups off my bipod, even with my slight flinch, but if I had it to do over again, I would get a smaller cartridge.
If you've grown up shooting big guns, well, you could probably handle it. I didn't, and I'm getting over the flinch, but I probably would have been better off with a 30-06.
Eddie