Good report Doug...velocities sound about right although I never worked with a 180 BERGER when I had a Dakota.I think you are about where you should be velocity wise.
Your powder charges are about identical to what I run in the Mashburn with a 175 NPT,but maybe a grain or so higher,and for about the same velocities from a 24 inch tube.
The Mashburn and Dakota are pretty much identical from a performance standpoint.
