For cost effectiveness and ease of reloading nothing beats the 223. I shoot service rifle competition and go thru about 4000 rounds a year. You can get brass from River Valley Ordinance Works delivered for ๕/1000 that is cleaned sized trimmed and reprimed with a Win SR primer. Drop powder,seat bullet, DONE! If you are not set up for reloading you could just but buy a lee setup for about ์ and your all set. That brass is Lake City Aresenal and is great stuff, we get 1/2 min accuracy with it at Ranges I won't say,out of good target rifles. KevinNY