Have a Kimber classic 8400 in 300 WSM and love the thing, one of the most accurate factory guns I have ever owned, shoot 180 grain Accubonds and I don't think it kicks any harder than the 300 win mags I have shot.
I also have a Kimber 8400 Classic in .300 WSM. I agree, it’s a very nice rifle. I only wish I had a use for it. For the hunting I do now, my .308’s handle all my needs nicely. I would kind of like to send the .300 WSM down the road, but seem unable to make a serious effort to do so.
