204 is an very good varmint round. In 1986 my Dad and I started prairie dog hunting in North and South Dakota and in the last 30 years I have loaded and shot just over 23,000 rounds in these centerfire calibers 204, 222, 223, 22-250, 220 swift, 243, 6mm, 25-06, and 308. The 204 is accurate, inexpensive to shoot if you make your own bullets, and minimum recoil so you can see what you hit in the scope. So get a good quality rifle with a high quality scope and shoot straight.