USRAC, New Haven Classic .375 H&H. Those barrels were way too heavy, IMO. The .458 Win and .417 Rem had the same contour as the .375 H&H. And, of the three, the .375 barrel was heavier than the other two, less steel removed from the bore.
I was pretty disgusted with how mine handled. After flutes and a chop job, it handles great. Shoots good, I like it.
DF