You will love the .411 Hawk. I built a 400 Whelen a few years ago and love it. Ballistics are the same and load data is interchangeable.

I used a Shilen barrel but any .411 barrel from a good barrel maker will work.

The 400 grain Woodleigh is a very good .411 hammer.

Chronographs, bore scopes and pattern boards have broke a lot of hearts.