Those wrenches are only for loosening or finial tightening a barrel, Savage, Remington or any other "Off Brand". Yes, they tend distort the action, but the threaded barrel tenon limits the amount of distortion and the action "springs" back to it's original shape/dimension after the wrench is removed.
When loosening a barrel once the action turns a 1/4-1/2 turn the wrench is removed and the action-barrel separated either by hand or with the help of another tool, a rear entry wrench for example.
Bill
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