Prepping for my second Colorado elk hunt ever and am looking to optimize my ammunition selection for my old Model 700 7mm Rem Mag. I used Federal Premiums last time with 160-gr Nosler Partitions (but never got a shot). Those are getting pretty spendy these days though... Does anyone have recommendations for other cartridges that can compare but might allow me to save a few $$? I can hit reliably out beyond 400 yds, so would like to retain effective killing power at those ranges too. Thoughts?