TWR,
While the bolt moves some in a Kimber 84M when on safe so does a pre 64 Winchester M70! I don't see it as a problem as its not so loose as to rattle. I does not rattle while on safe. It might make a sound if you moved it with your hand but so then might almost any bolt. If the round chambered was tight that might firm it up there but I FL size my hunting rounds.
I don't see that bolt issue as a problem at all.
My Kimbers are on the older side. I have no sn info for you.
There are no pressure problems with the Kimbers at all. I really like my Kimbers.
