Reddog, thanks.
I'm glad to hear the suppressor weight has nothing to do with accuracy. I wondered about that when I read it, questioning why a barrel would even be threaded from the factory if an added suppressor would affect groups / accuracy.
I'm a bit confused about your rifle being threaded 5/8x24 and why you would need the YHM QD. Why would you not just use a direct thread? I assume your can is a 5/8x24?
Do you have a photo or link to the YHM QD you mentioned?
As I say, I'm learning and hoping to get a good handle on possibilities and what I might be able to do.