I'm not usually one for physical print magazines, but the latest issue of Handloader has a great article on .45 Colt +P data. Usually all you find is wimpy loads for blackpowder guns, or smoking hot ruger loads. DA N frames and most modern single actions will handle something in between but there's rarely any data for them. Brian Pearce who wrote the article is a good authority on these loads and I have used his data before. The new issue has a great variety of bullets and powder so you'll find something I'm sure. I got some new stuff to try out for my favorite revolver cartridge.