To TennesseeRat: If you are in Law Enforcement you can get these rounds directly from Hornady for about $10 a box. Or you can get them from Natchez.com for abou$11 or $15 per box. As far as twist, the 1X8 twist is the most accurate that I have used, but the 1X9, 1X8, or 1X7 should be good. If you plan on using higher than 77 grain you definitely need a 1X8 or 1X7 twist.