A .300wby is going to give you a kick whether you're shooting 165, 180, or 200gr bullets regardless, unless I've been missing something over the years?
My .340wby whether shooting 200 or 250gr or 275gr kicks hard, to guess which load kicks harder would be splitting hairs, if I had to guess I'd say the 200gr kicked more than the 250, as it felt faster/sharper in recoil terms.