I wonder if you can help?
What calibres would work well in a .410 double rifle conversion?
There is a hole in the top barrel of the donor gun just ahead of the forearm so this will be a sleeving job.
I am working with a gunsmith on this project so he will be doing all the tricky stuff. This will be the first conversion project he has done and we are using this as a test-bed before moving on to a 12 gauge conversion based on a Simson SxS.
We will be trying to do this first conversion as economically as possible and calibre choice may be determined by what we can scrounge from the parts bin.
We can get hold of .22 rimfire barrels and .30 calibre takeoff barrels fairly easily but I am not sure that they would give us suitable choices for the action size.
In an ideal world would be your recomendations for calibre to be matched to a .410 frame?