Let me also welcome you aboard Tracker.
If you do what Rocky suggested you won`t go wrong. I would suggest you forget calulating the the 2% and just increase your load by 1 gn. each time you step it up. That is very close to 2% but it`s easier, and real close.
I`ve burnt alot of 4831 powder through a .270. I used to buy it for $ 1 a lb., but that was acouple years back.