The 6mm Rem has always been her favorite , always goes back to it after trying something new . We had used 100 grain bullets for a while , but I wanted to try the 80 grain at high speed . It shoots fast enough to not have to worry about bullet drop out to about 250 yards . She shoots well enough so not to have to worry about extra killing power of a stronger round . It is funny as it seems 6mm is the "new " craze in hunting ammo with several new 6mm cartridges . But the old 6mm Rem is as good as or better then them .