I've shot with some guys that shot GS Precision rifles with the rail that's extended for NV set ups, they couldn't get a business card between the rail and scope, but they never had any contact. We used feeler gauges to find the clearance but I can't recall what it was
Ever spit it out rather than swallow it?
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning.