I'm putting a 6 creed together and was thinking about using a 22 brake bored, out with 1/2 28 threads. Is 1/2 too thin on the threads or do you think it would be ok ?
that muzzle will be plenty wide enough for a 5/8x24 thread. I would always go with a smaller shoulder if it allowed for a bigger thread. The less meat you take away from the barrel the less chance it might effect the internal dimension of the bore , opening the barrel just .0005" could ruin accuracy.