I got a 5" .45 GAP barrel with .45 size breech block a while back from Ed Tinker, made by "Lugerman".
It was un-chambered but threaded and in hopes of ultimately being able to design a magazine/feed device , I chose to chamber to the shorter .45 GAP cartridge.
Barrel took a little tweaking, GT re-cut the threads to deepen them to fit a well used and ugly receiver I had for the project. Thanks GT.
. He finished it this past week and I spent the weekend getting it to the single shot test stage it is in now.
Fired it today, twice, worked fine. Had no extractor or ejector at the test firing, but as it went well I have added them this pm and will test their function as the next step in "development".
The design and implementation of a feeding device will take some thinking and time, as the .45 is too large in diameter for a typical magazine- will likely use the opening itself as the body - with some sort of feed lips added to the frame. Or not. I'll be re-studying the pictures of the way others have approached the challenge. Ideas welcome!!!!
Some pictures of the pieces and project are below.
When fired today I used a 42 vintage Mauser lower. the "tape" test compared with a 9mm shooter is shown, the .45 is on the right. Also shown with a 9mm G Date Mauser for size comparison.
Recoil was noticably "stronger", not sharp like a 9mm but just "robust"!
