Tut, if you decide to do that, I think you'd be wise to try to duplicate the ballistics of the old standard live pigeon load, which was 1 1/4 oz shot at 1220 fps. Just glancing at a couple reloading manuals, looks like you can get down to 8500 psi or a little less pressure. I've found that to be a load that patterns extremely well and is deadly on roosters as far out as I want to shoot them.