In my M70 Classic Fwt 7-08, magnum primers have made good improvements in accuracy over the WLR I had been using with Big Game and 140s. The one that surprised me is the accuracy improvement with Big Game in my Ruger M77 250-3000 with 100 gr bullets. Both combos were 1 1/4" at best with WLR, Wolf or CCI magnum primers brought both into MOA and under territory.
I have had the same experience with Big Game and CCI 250 primers in the kids' 7mm-08s.
