For whatever reason, I started out shooting 165gr Rem core lokts in my '06 for deer and never changed. I tried other 165gr bullets but none did as well as those old clunkers. The others were sleek and shiny with boat tails and such while the core lokts looked pretty stodgy by comparison. But the core lokts were more accurate in my rifle and they never failed to fetch what I sent them after so I stayed with them. My old '06 is pushing 50 and it has only had 165's and 200's (when I went elk hunting) shot thru it.