Crimp on the cannelure if you are having a problem otherwise. When you talk about getting between 2.200 and 2.215 are you adjusting your seating die? If you want to crimp you are going to need to trim all your brass to the same length. That OAL is fine. Recommended OAL isn't a written in stone type thing, use what works in your gun.
New gun, same ol' shot.