How much longer do you cut the tenon, if its 16 tpi one rotation is .0625.... Would you go at least one full rotation longer just to be safe and have enough in case you need to turn 3/4 of a rotation.
Another question do you index the bore to 12 O'clock first? Then cut tenon long, thread, then try to index bore to the closest flute that lines up with the muzzle end on the high side or 12 O'clock position.
Seems like you can only index one or the other not both. Or am I over thinking it too much?
