There was a local Fishing and Gun shop that went out of business and they were selling 8 Lbs for 110 bucks, I ask the old timer clerk about loading for 223 for AR, he said it's about close to BL2 in burn rate. my goal is just to punch holes at hundred yards with 1-2 MOA accuracy and reliably cycle the action. My one AR has a 22 inch barrel with a 1in9 twist so it should be long enough to burn most all the powder. Anyone got a starting load for 55 grn and 62 grn bullets ?