For the .223 rem being shot out of the bolt action do not worry about the crimp. I have loaded over 15k rounds of .223 since december and have not crimped a single one. A lot of those went into AR platform rifles with no problems at all.
For the .40 S&W The Lee FCD is awsome to help prevent that one or tow that would cause a hicup in spec. I use one for 9mm and .45acp.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.