Originally Posted by
gimp
A way to assess effective terminal range is to consider whether your bullet will expand. Based on various sources of information, you should probably expect an ELDM to expand down to around 1800fps. Penetration increases inversely related to velocity - so sufficient penetration will not be a problem.
Do you have sufficient retained velocity at that range? If a heavier .224" ELDM hits the animal in the vital zone, and expands, it will kill it.
I'd expect effective expansion from my load (80ELDM) to about 475 metres. I have shot deer to about 420 metres with good results.
Hit probabilty is another consideration, however that is a similar problem with any cartridge at these ranges. You really need to be honest with yourself about your capabilities if you are concerned about missing or shooting animals in the wrong place. Can you regularly hit a 200mm circle first round from the positions you'll be shooting in, in the conditions you'd consider shooting in?
My .223 load outperforms a .308 with a 155gr ELDM in the wind. Many people would be comfortable to recommend the .308 load out to this range. I can make more consistent hits with the .223 in reality.