omegax
This is the first time I've ever fired any muzzleloader at all, not just this one, and about half of my shots required me to fire another primer to actually go off. One time it was that I didn't have the bullet seated all the way (lesson learned), but the other times I have no clue. I was using 100 grains of Blackhorn 209, and Remington Kleenbore primers.
A couple of notes, Bh is considered to be a smokeless - progressive buring powder. It requires a lot of heat and flash to get it to ignite, and after that it requires compression to continue to burn.
From these two facts....
1. It is possible that the Rem Kleenbore is not hot enough... most people suggest the Federal 209A or the CCI 209M.
2. If the sabot is to loose compression wil be lost and the powder will not burn. When you seat the load it needs to be seated tightly on the powder.
3. Another suggestion shoot a couple of caps prior to loading and shooting a load. Shooting the caps will clear the breech plug.
The times it didn't go off, I waited quire a while before flipping open my breech block to seat another primer. How long did I need to wait, and was it something I was going, or did my brand new bottle of powder somehow get moisture?
The big thing when you get a mis-fire - keep the muzzle down range for a few moments... If you do not experiance a hang fire then with the muzzle down range drop the breech - pull the spent 209 - load the next 209 - close the breech and attempt the second shot. Personally , i would wait 30/45 seconds - expecting a hang fire at any time...
I doubt that moisture of the powder from the bottle had anything to do with it.
Just some thoughts...