Not enough difference between a 450/400 and 375 Flanged to warrant the expense of different barrels, IMO.

A set of shotgun barrels might make more sense for the traveling sportsman.

I'm not in love with Kreighoffs but Foxfire has a rifle that will travel anywhere and have an option that is close to ideal. Throw in a set of shotgun barrels and nothing can't be hunted. One issue though is that if you have your heavy rifle set up you can't also have your light rifle and vice versa.

JPK