Quote Originally Posted by Barryg View Post
Tony,
the 470 has a 52 piston with a 115mm stroke,

Where do we get the Diana spares now in the UK?
Barry how can it have a 52 piston when the 52 piston has a longer latch rod than the 440? It has to have a piston with a shorter rod for a longer stroke?

If you are right in that the 470 has 115mm stroke then its not the gun to get, the rifle to get is the 440, fit the 470 under lever and move the catch forward or make a new one..or do as i did and replace the rod from the underlever.

Is the rear action on the 470 longer than the rear action on the 440? The 440 will do 20fpe easy in .22 already in stock UK form with the right set up.