ive killed 8-10 deer with the 7mm-08 but have never seen an Elk so wont comment on them. Each deer Ive killed with the 708 has been with the factory loaded hornady sst 139grn. Every deer so far has been a bang-flop. Every. Single. One. I shoot high just behind the shoulder and they fold no tracking. deer sizes have been does to a old 6pnt that weighed just shy of 200lb. small sample size I know but the SSTs are extremely accurate and work great on deer for me thus far.