Chad,
Are you used to stiff recoil?
Optic or iron sights?
Any Encore Barrel should fit on any Encore frame. A G-2 or Contender barrel will not work on the Encore.
Consistent, but not hard pressure on the forend (in the same place every time) will help in grouping when shooting off of the bench. Typically closer to the the frame works for most. Tighten your forend screws to the same tension (try to anyway). Don't over tighten.
FWIW Since the encore has an external hammer locktime is a little slower than say a bolt action.
Once you get the load developed for your uses (assuming hunting?) make sure you practice from field conditions/positions and see if your point of impact changes or remains the same.
Most of all get out an enjoy it. If specific problems crop up, then, let the forum know