I know the dimensions are not identical, but it seems to me that it has taken the gun industry 100 years to catch up to Charles Newtons imagination....... He listed a 33 newton which is almost the same as this 33 nosler.............
Newton was way ahead of the game and his time....
His .256 had a standard twist of 1 in 10",
and a bunch of taper ( .418" at the shoulder )