I made a 7WSM on a Sako AV long action a couple years ago, it has a long throat since OAL is not an issue. I believe it does make this cartridge shine, with 160gr Accubonds and an OAL of 3.145" it shoots at 3185fps with single digit standard deviation.
that is not even in the realm of possibility with a factory 7 WSM chambering.
B