Muzzle brake question

I've got a 30 cal 3b bartlein. Threading and muzzle brake question? what thread pitch would I need to run a brake flush? Barrel is .700". Final question. Is there going to be enough metal to thread it and run it flush or will it be too thin causing issues?

5/8" on 24 would get you where you want.
Scott weichel from live oak accuracy is making a self timer that is amazing.

The video is a 13# 338 edge pushing 300grain Berger's 2800 FPS

Thank you