If you find the 300 a bit too much and, there’s nothing wrong with that, then the MUCH milder recoil of the 270WSM is what I would recommend.I do reload, and I shoot F-Class
I the 300 win mag with no break was not fun to shoot. I'm only 160 lbs and it kicked my butt pretty good.
To be honest I was kind of hoping I would get more people suggesting the 270 WSM. For whatever reason I feel that if I went the 300 route, I'd load 200-220 gn bullets. Something in my brain won't let me load lighter bullets...
I also would throw in the 264WM. I have one, and a 270 Weatherby, recoil between them is identical with similar weight pills. Recoil is considerably lighter than the 300 mags.