I took my 454 Casull Ruger Alaskan to the range yesterday for a little punishment.
Cabellas didn't have any Grizzly Ammo so I bought Buffalo Bore, both are hard cast 360gr. The first two rounds were duds, they didn't fire!
I rotated the cylinder and tried again, one went off and the other would not fire. After three attempts I gave up and put it away. Thank god this wasn't a late late tent invasion from a big brown critter.
I emailed Buffalo Bore about the incident and they said my gun was the problem. I responded with a series of questions and they assured me that the Ruger firing pin was inadequate and the spring pressure was to soft to fire a CCI primer, evidently they use CCI, that's fine with me, so do I.
I have shot hundreds of Grizzly Ammo bullets through this revolver so I called Grizzly and spoke directly with the owner of that company today. He told me that they also uses CCI primers specifically because they handle higher pressures than Federal, most reloaders know that CCI is thicker skinned.
Note: I've never had a Grizzly Ammo round miss fire.
If any of you Alaska hunters are carrying Buffalo Bore ammo beware!