@Andrew Short that’s a nice looking rifle.
A few years ago I acquired a 450 Ackley, the first shot with that rifle hurt like I couldn’t believe. I’m not a small guy and grow up shooting big calibre’s from a young age. I say that coz I never thought myself a recoil sensitive guy. So I told myself toughen up and shoot it again. Well the second shot left me with a nose bleed and loose teeth. I wasn’t dumb enough to shoot it again. While discussing the issue with a fellow PH he offer me another stock. Which I accepted, took it with the rifle to a local gunsmith. Whilst with him we took the original stock off, which I was surprised to find had been filled with lead shot and glue mix, by a previous owner. The replacement stock wasn’t made for the Husqvarna/ Mauser action but balancing the action in the stock I was struck by the reduction in weight. (Wish I had weighed it, but it was a lot). Well a few days later I picked up a much lighter rifle, with trepidation I took it out for a test fire. Picture firing a rifle with your face as far away from the butt as possible and both eyes closed. To my surprise the felt recoil was considerably less, felt similar to my .375. After that I sighted the rifle in with beanbag over the front of my land cruiser. Admittedly a few shots a day.
the long story short: whilst you can’t get away from the physics of recoil, MV2. Adding weight to rifle changes the recoil the fit is more important. I have attached a picture she ain’t pretty but she does the job.