I don't doubt that load would take an elk at 100 yards if you had a perfect shot. Personally, I wouldn't take a shot over 75 yards with a load that light, but I am a believer in the "bigger is better" theory for elk. I use 430 gr. Maxi - Balls over 110gr. ffg Goex in the .54's I use for elk hunting. I'll use the lighter stuff for deer hunting sometimes, depending on the area I'm hunting.