Most Whitetails are taken within 75 yd.s,its all depends where your huntin,with in the 75yd. range 44 mag. ,30/30, 41 mag. .357mag.,35 rem.,480 ruger, 454 casell, 45/70 gov.,444 marlin,450 marlin,45 colt,307 win.,.356 win.375 win. 38-55, would all do the job.
Some of these cartridges are very powerful and have more range but with in 75 yd.s all would do the job.( I like the .357 mag. for a pistol cartridge in a lever.)
Buckeye