Well finally I was able to pick up both magnum and regular rifle primers but I could only get Reloader 17. Luckily they had the latest Hornady reloading manual and I checked for the 300 WM and 180 grain SST and the 220 grain SP for which it had RL17 load data. It wasn't until I got home that I discovered that my Hornady manual was older and didn't have RL-17 in it. Nor could I locate any info with internet searches that included the load range in the Hornady manual. If someone could help me out that would be great. Thanks!