Quote Originally Posted by Drew451 View Post
I've never experienced piston/rod failure on any Diana Ive owned going back to 1986. I have had probably over a dozen Dianas with this method of piston construction and experienced varying degrees of out of roundness, which is annoying enough, but nothing more serious.
I believe that there have been big variations in the hardness of Diana piston etc. steel over quite a number of years. The steel obviously reacts differently to the pressures of crimping. This is how the out of round issue effects some guns much worse than others. And probably why there has instances of rod detachment.
Obviously, there is a happy medium that Diana have found the vast majority of the time. But you can't help thinking they should revert back to their old system or use a new method.
It would probably restore confidence which is critical. Especially at this juncture.
Same as me. Cant recall how many Dianas I currently have but its in.double figures without any issues.