I had seen some posts here and there about crimping or not crimping to prevent bullet set back with AR's. I loaded up some rounds and did a test. I loaded the test handload and then a factory federal 55gr fmj. I fired the factory load and let it auto load the handload. I then ejected the round and measured it. It actually sets the bullet forward in the chamber(the OAL increased) I have attached my note card of before and after measurements of OAL.
Notable variables:
60gr v max flat base bullet (no cannelure)
Lake City brass (once fired)
Rifle length gas system
Rock River 223 wylde chamber
Redding type s dies no crimp
Notable variables:
60gr v max flat base bullet (no cannelure)
Lake City brass (once fired)
Rifle length gas system
Rock River 223 wylde chamber
Redding type s dies no crimp