If you have the newest Nosler Loading Manual, you can use their data for the Ballistic Tips and Partitions. Of course, the http://shortmags.org/shortmags/ site has loading data from all the bullet and powder manufacturers. If you have any of the short magnum cartridges or are thinking about acquiring one, I heartily recommend the site and its' forums. I post over there quite a bit and they have some very knowledgeable (and opinionated :wink: ) members.