I called every shop within 45 minutes of Essex and no one has any. I bought 2 boxes from HNP muzzleloading, but they are full power shotgun primers, and the primer head bulges out when struck and is jamming my break action on my MZ.
I actually use pretty hot shotgun primers in my muzzleloader. Fed 209A or CCI 209 Magnum. That is actually what the manual suggests.
Now that I think about it, maybe it is time to finally bite the bullet and get a T/C Encore muzzleloader. Have always wanted one.