ORIGINAL: mezell777
I have just come into a fairly large quantity of Win Large Rifle MAGNUM primers. Has anyone ever used magnum primers in a 6.5x55 load. I am reloading for a Ruger MkII and use slow powders, mostly RL-22 and H4831. I feel like the Ruger will handle the likely increase in pressure but will accuracy likely suffer?
My normal load is 48gr of RL-22, Rem case and WLR primer behind a 140gr GameKing at around 2650 fps.
Thanks in advance for the replies.
No, not in the 6.5X55. However, I have used magnum primers in some cases of comparable capacity and caliber, such as the 7X57mm, with slow powders like RE22, MRP, and N205- not that the round needed them, but they were all I had at the time. I encountered no problems from excessive pressures, etc. But I did drop the beginning powder charges a couple of grains more than usual when starting to work up loads. In actuality, I could detect no real differences in performance that could be attributed to the use of magnum primers in smaller cases, and my previously developed maximum loads could still be used......