A friend that I have hunted with, off and on, for over 40 years still shoots a Remington 721 in .270. He has taken at least 18 bull elk that I know of--all but two with 150 grain Partitions. The other two were taken with 150 grain Sierra hollow points (before I insisted that he try the Partitions). I have never seen him shoot at a deer or an elk beyond 300 yards with this rifle, and most of his shots were this side of 150.
If you can place your shots accurately, either the 130 or 150 Partitions will do the job for you. Since it sounds like you have a great deal of confidence in your .270, I would suggest that you use it. I don't believe that you will be disappointed.
As an aside, I have been disappointed with the terminal performance of Hornady Interlocks on large elk in one of my 7mm Rem Mags, and have seen similar problems with the same bullet in at least one .270 Wby Mag. But I haven't had any recent experience and they may have solved the problems.
