Hi Jim , sounds to like you really don't need the .338. An accurate .270 shooting those 150/160gr NP's will easily do what you need. Have been watching (and using) that combo on a great number of bull elk for the last 40 years (literally dozens) and it does a great job.
How about replacing the .338 with a stainless/ synthetic .30/06 with 22" barrel, topped with a good mid-sized 2.5-8x 36 Leupold VX3? Load it with 180gr NP's and venture forth!
I used to be a Magnum Maniac of the worst kind! Have used the .338 a lot and love it, particularly on elk. (Along with many others, some bigger, some smaller) But, in the end,
a good .270 and/or .30/06 will always serve you well to at least 500yds. Also a lighter, easier carrying rifle is always welcome when conditions get a little snotty out there.
Just my opinion anyway- take care of that hip! Cheers