Guys I have a model 111 in 7mm Remington Magnum. My question is, is the magum action a large shank or small shank? I really don't want to have to seperate the barrel and action to find out. I'm sure this has been gone over before and I apologize for reposting, but I want to change the barrel and am not sure what shank I need to get. Any information would be appreciated. Thanks Jason