For those that reload for your .308 ARs. What combo have you had the best luck with? I am trying to use once fired brass mixed head stamp that has been full length resized, Fed210 primers, 43gr of varget, 175gr SMK. COAL of 2.800. The issue i am running into is that as soon as i chamber a round it gets stuck. It is almost like it is engaging the rifling and getting stuck in there. I have to bang on the butt stock and pull on the charging handle just to let it go. Should i seat deeper at the risk of increased pressures?