Just about ready for another test. Hose clamped the stock together it should be ok for what I need to do. I have been trying to fit 209 primers and have finally got it (I think). When I drilled out the original pocket it doesn't leave a lot on metal to hold the primer and the cases are very thin on the base so when I dry fired them the back of the case would concave in substantially and the primer would fall out when the case was removed.
So what I did is to add a 3/16 thick cork base wad to the case to give it a bit of strength, this should keep it from collapsing. My only concern is that this might raise internal pressure. I do remember reading an article about this very thing years ago bit I cannot remember the outcome.
If anyone knows please chime in, otherwise once the weather here gets a bit better I will be out to test fire again.