That's funny, when I asked Herbert that question, he said "what's wrong with the barrel on it"..
I confirmed that Mcgowen and Hart will do the rebarrel.. Hart is the better choice but their wait time was like a year. Mcgowen was around 3-4 months.
I have the 6.5 CM THB and I can pull under 1/2 MOA @100yds with Prime 130g ammo all day off a bipod. I just ordered some copper creak load dev pack.. see what I can get out of that.. with the 153 Aluminum Tip.
Also went with the boyd's varmit stock.. pretty solid but didn't come anywhere close to fitting the THB. Pain in the but cutting out the stock and trying to make it look good.. used a drimel saw blade.. then sanded the poop out of it.
I think knowing this info, it would be worth investing in the manners or mcmillian stocks.