Originally Posted by rich
I've added two M5 grub screws radially to my mark 1 at 120 degrees so the barrel is clamped in three planes, like a 3-jaw chuck, and I still got accuracy issues with it floated.
Last week I did the same thing to a fellow benchrest shooters Mk1. I was convinced it would cure his accuracy problems
Unfortunately even though the barrel was then firmly clamped in the breech block the rifles accuracy was very poor
I then changed the barrel and fitted a 14mm LW barrel
Accuracy was improved but was still not good enough for benchrest shooting
I could only then put the rifles poor accuracy down to the reg. needing a service.