The difference betweeen the 35 Whelen (.358) and the 9.3 (.366) is .08". And the 9.3 (.366) and the .375 is .09"
Both are virtually the difference in the depth of the rifling.

Phil Shoemaker
Alaska Master Guide,
Alaska Hunter Ed Instructor
FAA Master pilot
www.grizzlyskinsofalaska.com

Anyone who claims the 30-06 is not effective has either not used one, or else is unwittingly commenting on their marksmanship.