for the practicing,i would get someone to lend you a .22 or something low calibered like that.if you practice your butt off(i think shoulder would be the correct term)it is gonna really kill your shoulder.the .22 has no recoil and like $50will provide like a week of ammo at the range.the cheapest iv seen was $7.26 for a brick of 500.im pretty sure thats much cheaper than .30/.o6.