Magnum Primers for Ball powder

[NuJudge]

I've been shooting 6.5x55 in a 1899 Swedish M96B lately with 140gr Hornady bullets and a caseful of WCC860 in PMC brass. I worked up loads with both WLR and WLRM primers. The WCC860 is about as slow a powder as you can get. The Magnum primers definitely shot better groups.

CDD

[bigbore44]

I use lots of ball powder such as 748 and 760 in both 308 and 30-06 and get good results with non magnum primers like WLR and Federal 210. But if magnum primers make you feel better about shooting then go ahead and use them.

[Bingo]

You can use magnum LR primers in .308/.30-06 cases. BUT you have to reduce your powder charge by two grains and 1 grain if your are using military cases also. I called Sierra Bullets and spoke with a tech about this.