Sounds like you're down in that "if they make it out of the sendero and back into the brush we'll never find them" part of our state. Big calibers just make sense down there, and a 300 RUM is obviously more than a match for any deer anywhere.
I'm more curious as to whether the rifle itself is appropriate in your eyes for your hunt. My experience with hunting deer all over Texas is that it's done from a blind, buggy, or stationary position where rifle weight and portability aren't even a slight concern. Is this rifle light enough that you won't mind lugging it around for hours and hours up and down mountains, or do you think you'd be better served packing something lighter around?
I'm more curious as to whether the rifle itself is appropriate in your eyes for your hunt. My experience with hunting deer all over Texas is that it's done from a blind, buggy, or stationary position where rifle weight and portability aren't even a slight concern. Is this rifle light enough that you won't mind lugging it around for hours and hours up and down mountains, or do you think you'd be better served packing something lighter around?