Gear Head
Happy to be here
Is there a rule of thumb for this? I built a rifle in Dec and just got it out today and it will not lock the bolt back. I have a White Oak SPR barrel with rifle gas and a SLR Sentry 7. I started at 3 clicks open and the bolt didn't even move. Went another 3 and bolt moved but no ejection. Kept opening the gas block until fully open and it ejects no problem but will not lock the bolt back. I tried 2 different mags. If I pull the charging handle on an empty mag it locks back. If I use the bolt catch it will lock back fine. All this is leading me to think the gas block isn't properly aligned but I assumed with a dimpled barrel it was basically self aligning. Is there a way to check my current alignment without something like a bore scope? Also, of the few youtube vids I've looked at people just slide the gas blocks right up against the shoulder. Mine was an absolute fight to seat it against the shoulder by hand. Probably just super tight tolerances from quality manufacturers but figured it was worth mentioning.