I usually only buy HST or Ranger T, I bought some Hornady American Gunner a long time ago and had some left over. Yes, I'm curious is the extra 150-200 ft-lbs of energy makes a difference. I like to know the truth behind things and see what's what. If they're more effective I might consider buying them. I'm guessing they will have a bigger wound cavity. I'll let you know what I find.