ORIGINAL: Roskoe
If your gun has a fast enough twist (1:9) try the 75 grain Hornady A-Max. Broadside rib shots only. Amazingly effective.
for the ranges one would use a .223 on a deer 75 yards or under, I woulnd worry tomuch about rate of twist even 1 in 12 twist should stabalize a 75 grain A-max enough for a accurate 75 yard shot. Just dont go trying to push that 75 grain A-max out to 200 yards accurately with a 1 in 12 twist lol