Thank you everyone for the info. I E-mailed Frank Glenn however he simply mentioned possible lead spitting at a BC gap of .008, this is not something I have noticed although I am not sure I would during normal shooting. He also mentioned measuring the BC gap with the maximum feeler gauge that will allow dry firing all six chambers. 2 of the chambers measured .009 BC gap with .003 endshake, 1 chamber was tighter with .008 BC gap and .002 end shake, and 2 measured at .010 with .004 end shake. So if I understand correctly does that put the BC gap and therefore the resulting end shake at the smaller measurement and therefore within spec? He also mention holding the cylinder back and measuring headspace. I am confused by his reply and the difference between BC gap and headspace. Either way my current plant is to continue to occasionally fire it using mostly .38s and maybe the occasional cylinder of light 357 and just keep an eye on the measurements to see if it gets worse.