"The only advantage to pinning a lug is to not have to take the barreled action out of the stock to switch barrels. Otherwise a $20.00 dollar lug alignment tool is all that's needed when changing barrels, along with a vise and action wrench. The lug position itself has no bearing on headspace."
+1
I have quite a few switch barrel, only had one pinned(the first), never again.
On switch barrel guns, I never bed underneath the barrel. All the guns shoot very tiny groups.
