I am 55 and have hunted South Texas most of my life, believe me they were not farm fed like at Ft. Hood, feeders yes, but if you ever see South Texas it is brush, mesquite, cactus etc. I realize there is a lot of high fence ranches nowadays but when I was a kid, many of my fellow schoolmates hunted with
.222s. I still use a .22-250 and I kill many a large #200 plus hog with it all the time, I like using a mini 14 (.223) or AR and getting a herd of hogs in a crowd and thinning them out. I kill large hogs with a .17hmr with body shots, most dont go far at all. I have shot them with a .270 and had them run a good ways. here any centerfire is legal for deer even a .22 Hornet. the right bullett and placement is all it takes. I know people that use magnums and are scared of the rifle and therefore bad shots, you dont need more than a .308 in Texas anyway and managed recoil ammo will tame it down to a .243 recoil or less.