"sorry but deer dont even require a premium boolit, out of any caliber."

On that I can agree 100% if it's of the proper caliber for the animal. Many are buying into these expensive premium bullets for deer and antelope when you really don't need them until you get into the bigger elk and moose size critters. Then a bonded bullet of the proper weight for caliber is preferred for good penetration before complete expansion occurs. I have no idea where the 500 ft/lbs of energy on deer came from in RR's posts, but I have always agreed with the old timer experts that felt the stats of 1000 ft/lbs at POI on deer and 1500 ft/lbs on elk and moose is what should be strived for and that is the main reason I frown on anything under a .243 at reasonable yardages be used for deer.