I have shot deer with 140 Sierra HPBT in my 270 win.. Worked fine.. I has even more deer with my 7 mag.s and Sierra 140's, and dozens with 150's and 165 HPBT in .30 cal.. I would say either the 130 or the 140 would work fine on mulies..Shots do tend to be a bit longer here, but usually with in the point blank range of the 270 or .270 wsm.. My next buy for my .270 I planned to go to the 130 grain Sierra BT.. It has been killing deer for more than 60 years, both here and on the east coast.
Best of luck..
