I have been using 2230 in my 20Tac, I will not be able to get the speeds you guys are getting no matter what powder I use cause I built my custom barrel for my Contender. Its a great little handi rig. I have it set up for the berger 50's but could get the speeds I thought it should be getting. Now I am using the 40 V-Max and 2230 powder and getting around just under 3700fps!! I am starting to have some pierced primers using BR/Match primers so I think I will start over with the load data and use some small mag primers.
I have wanted to try some other powders to try to fill the case to make it a little more productive but just have not changed yet since I have a 8lber sitting the reload room.
Kapac