The .257 Roberts has taken everything from deer, hogs, antelope & elk in my family over the years. It is the rifle 2 of my 3 girls have started their hunting with and the third is about a year away.
My 700 Mtn Rifle shoots 100 gr. Barnes around 2900 fps. It exited through on a 550 lb. + cow elk at about 150 yds. I think it will kill any deer that walks if the bullet is placed right. "Gut shot" is "Gut shot" whether from a .223 or a .458 Win Mag.