I think that core-lokt bullets have probably taken more deer over the years than any other bullet.
A bunch of guys I know use their pocket knives as screwdrivers too, but it doesn't mean it is the best tool for the job and often times ends up making a mess out of a simple project. The CoreLokt is probably fine out of something without all the velocity, but in my experience they just don't hold up when pushed. CoreLokts are like 30-30's, people shoot them because they are cheap.