Headspacing

[G.T.]

Hi Don, one has to remember that the current commercial loadings are about .010" under the "GO" gauge... So, you are sporting a .010" free space even when tight on the "GO"... Sooo, closing on the "NO GO" adds up to approx. .030" Plus some.... Waaay, to much.... The fact that it straightened out when the toggle train was corrected was an indicator of a good, although deep, chamber... The barrel was obviously chambered at the factor for a long tolerance toggle train, and the switch didn't allow for this?... It is normal on the ridge, and nothing is going past? A lot to digest? And of course, I'm not positive of my theory... Best to you Don, til...lat'r....GT

[G.T.]

The hole is drilled on the machined recess of the hold open relief on the bottom of the breechblock?... Not very big either?... probably 3MM give or take a few.... GT