To answer your question...7-08 with any 140gr.

In my opinion, if you’re a handloader, load the 270 with Barnes 95gr TTSX @ 3000fps and kill chit.

If you’re not....
223 w/Barnes 62gr TSX
243 (85-100gr)
6.5Grendel w/123gr SST Hornady
30-30 (125-150gr)

Have fun and good luck!