Are these two ballistic twins? I was all set to build a 7wsm when I mentioned I like to be able to top feed... Anyway, smith suggested looking at the 280 AI as it didn't have the feed issues the 7wsm has. Can someone give me some info? Velocities for the 280 AI with 168 and 180 bergers, case dimensions and pwder capacity for the 280AI, opinions on pros and cons of the two rounds... Oh, I'll most likely be using the nosler custom brass. I've run a couple searches without much success. I'll keep at it. Thanks for the help.