RE: .308 Win
BC I know what you mean. Just using the original X bullets, the wounds on deer just never impressed me. Most however went down pretty fast. Of their ability to Penetrate, there is no doubt.
If I were going after Elk with my 308, I would load the 180 Grain Partition with total confidence. Another bullet that does not get much attention in the 308 is the 190 Grain Hornady BTSP. I used to load them for steel silhouettes but they were also extremely effective on all big game Deer, Bear and Moose. This, even though theywere only loaded to 2400-2450 fps.