I have to agree that if you start taking long shots with a .223 you should probably just get out your 6.5 or .308. I load run of the mill 70 grain SP in my .22Hi-Power. I am pretty much stuck with these bullets because of the weird diameter. My AR.223 with Varmit bullets definitely messes up a deer more than the bullets loaded for the HI-Power. If I could find .228 Varmit bullets, I would definitely load them for the Hi-Power.
I have had problems in the past with bullets not measuring up to the advertising. Trying to compensate the short comings of a round with a different bullet design usually is a mistake. I stay away from the super duper expensive bullets that claim awesome penetration. These bullets usually do not do well at close ranges.