I've done a couple more things on my project to make a hybrid PCP pistol out of the 1700P breech.
1. I've machined the bottom of the loading slot so that the Marauder pistol magazine will fit. I'll need to make a spacer to go behind the magazine when using it since the 1700P breech has a longer slot.
2. I played with the 1700P breech and 22xx steel breech on a Benjamin Discovery tube to see where everything needs to line up on a new tube. It turns out that the current location of the transfer port on the Benjamin Discovery tube (and therefore 22xx tubes), looks correct for the 1700P breech. The pictures I posted with the following thread made it look like that might not be the case.
http://www.network54.com/Forum/275684/t ... n+pictures
Here's a couple of pictures of the milled breech.
From pictures and EVP diagrams I noticed that the 1700P/1701P/Marauder pistol valve screw holes have moved backward (the holes for securing the valve to the tube). Does anyone know why? Did the position of the Discovery valve holes interfere with something?
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