I have a pre-64 Mod. 70 in an H-S Precision stock. The thing weighs about 9 1/4 lbs., as I recall. I've had numerous other .270 Wins over the years as well. In addition to my .270 Win., I also have a Kimber .270 WSM. Yeah, I'm a 27 cal. slut. Anyway, I always use 150 gr. bullets in both rifles and can say that the recoil in the WSM is a bit more stout than the standard .270. The thing to remember though is that in my case, the .270 Win. is several pounds heavier and I use around 11-12 grs. more powder in the WSM.
To me, neither is intolerable & I can easily go thru a box at the range in a day. In the field, you won't feel the increased recoil of the WSM. Just my thoughts.
Bear in Fairbanks
"Unless you're the lead dog, the scenery never changes."
Amazingly, I've lived long enough to see a President who is worse than Carter.
Gun control means using two hands.