Having misfires with Encore 25-06 and Hormady Superformance ammo

. Any one else had trouble with either?
The primers look like they are struck pretty hard, but 5-6 out of a box misfired, click NO BANG.
I've e-mailed Hornady but no answer yet.
Haven't tried another brand yet, 25-06 is kind of hard to come by around here right now.