Vinney,
Keep us posted on your results with the large rifle primer. Preston Pritchett of Surgeon Rifles and I were talking about trying this at a shoot a few days ago. I had to ream my flash holes out on the Lapua to get my 6-6.5x47 to shoot with any consistancy. I would like to get away from the small primer but only if I could get better results with large rifle primers.
I have since rechambered the barrel to 6x284 but am going to try the 6-6.5x47 again when I rebarrel.
I have a 6.5x47 reamer but I couldn't get the velocity that everyone else was getting without showing high pressure signs. But in all honesty I think I should have tried it with a different barrel before giving up.
Thanks.
Larry