Gee, what an "interesting" thread.
Apparently some people still wander around the days when muzzle energy was the criteria for big game cartridges.
Back in John Taylor's day, when only cup-and-core 140-grain bullets were available for the.275 Rigby (aka 7x57), he thought it was plenty for any African game under 1000 pounds.
I've killed plenty of big game with the 7x57 (aka .275) up to 1000+ pounds using "modern" bullets of various weights up to 160 grains with no problems. Have also used it with various lighter bullets on somewhat lighter game, again no problems.
It would be somewhat astonishing if any appropriate bullet bounced off a Texas deer--or indeed a water buffalo, also found in Texas.
