The .30/30 is effective out to 200 yards, whereas the .357 gets pretty wimpy by the time it reaches 100 yards. Your mention of brush implies that you might be thinking one will be a better “brush bucker.” There is no such thing. Even bullets from the most powerful “elephant” rifles can be deflected by relatively small twigs.
Outdoor Skills – Hunting Q&A
Would a .357 magnum or a .30/30 be a better deer rifle? Neither one kicks hard enough to bother me. I'll be hunting in light to moderate brush in the Ozarks. --P.B.