Originally Posted by Rhettsker
Yondering,

So are you saying 1/2x28 threads with a 1/2x28 to 5/8x24 adapter is better than threading 9/16 and running a 9/16x24 to a 5/8x24 adapter? This on a T3 30-06 finished at .630


Yes that is correct Rhettsker, if we're talking about a .630" barrel diameter.

9/16 is good for some hunting rifle barrel profiles IF you're using some sort of muzzle device suppressor mount, direct thread to 9/16, or an adapter to something larger than 5/8. The 9/16 to 5/8 adapter is too thin unless it's extended so one thread is in front of the other and not overlapping, but that's generally undesirable since it's longer. It needs more shoulder than a .630" barrel provides anyway.