I don`t know what cases you are using for you`re 7 Rem Mag, assume RP, also assume Wby cases for the 7 Wby. Weigh the two different cases. You may be surprised.
I`ve a Wby with 687 rnds down the Pac-Nor barrel, by count. Throat is shot. I may just replace with a long throat 7 RM. Simpler all the way round.

Sorry for the deviation of topic.