In my Win 70 in 300 WSM I have had the best luck with
Reloder 22 with 200gr to 210gr bullets
H4350 with 175 to 185 gr bullets
Reloader 17 with 150 to 155gr bullets
IMR 4831 with 165 to 168gr bullets
using WLRM primers and WW brass
Rem 600 got 3000 FPS with 120gr with factory loads.....very close too 270 Win in performance from a 18.5" barrel.
I use 125 Nosler Part and 55.0 of IMR 4350 using CCI 250 and RP Brass....very good load!