I love my Teslong. I have the version with the monitor also. I figure there's no sense in using phone as a monitor, $800 oopsie waiting to happen. Here's some pics of my chambers.
first pic is my 22 creedmoor custom built. Second is a factory 243 ruger American predator. My 300 Rum is at the smith right now. For reference that inside chamfer line on bottom pic is .012" ish. So they both have id say .015-.018" I'd say yours looks like it has .040 or more.