redmag, Go with the Tikka in 223, if that's the cal you want. you will be alright. And yes you will whack them hard at 50-60-yds, just make sure you use the right bullet. When you get it , When you sight her in, try different ammo by different manufacturer to see what your rifle likes and holds a tighter group. then try different bullet weights . You will find what work's best for you rifle. good luck.