You compare the 2 caliber
Using Federal Factory Ammo.
You certainly notice Winchester have not the same load at all
Using the Winchester load..Data are completely different.
7mmWSM , 24" test barrel
160gr Nosler Accubond launched at 3050fps
16.6" wind drift at 500yds in 10mph breeze
-36.55" drop at 500yds with a 200yd zero
1646 ftlbs energy at 500yds
300 WSM , 24" test barrel
180gr Nosler Accubond launched at 3010fps
15.7" wind drift at 500yds in 10mph breeze
36.75" drop at 500yds with a 200yd zero
1887 ftlbs energy at 500yds.