I went through the same thing with Mcgowen. However when i got 2 out of 3 barrels that were bad, and went over the top to prove it was the barrel they still wouldn't believe me. I think I only got a refund to stop me from bugging them.
I shipped the barrel to them twice then finally shipped the entire gun to them. All they did was shoot it, see the same issue, and blame the ammo. I spent my own money to have the ammo tested and verified it wasn't an ammo problem.... Then after months, lots of my money spent etc... they finally offered a refund for one of the barrels..... (oh and the gunsmith at Mcgowen even admired it was a barrel issue, but Dan the manager didn't want anything to do with it)
Everyone makes mistakes and I'm understanding, but the terrible customer service is why I would never buy a Mcgowen or recommend them to anyone. You might get a good one, you might not. Searching around on the internet Mcgowen barrels seem to have a lot of complaints and negative reviews....
In my opinion, I'd get the lighter Criterion contour. If it is a hunting gun, you don't need a heavy barrel profile to be accurate. You won't be shooting strings of shots at animals hopefully!