Even did some homework for you,The link will take you to some chrographs you might find helpful. you have been helpful to me in getting started. Hope this helps! #1 is your results in this graph.
TC ThunderHawk thru chronograph. 24 inch barrel, 1 in 38" twist using #11 primers
http://pages.sssnet.com/go2erie/muzzle.htm
For some reason I could not cut and paste the excel geaph???