having some problems with my SBEII. bought it a couple years ago, and has been working fine, only had problems cycling brother of heavy steel. on my last outing, it misfired almost every "second" shot. I was using Kent fast steel. hammer would drop, but no discharge, there was a dimple on every unfired round.
only theory i got going right now is that the bolt face may not cycle completely around, adding maybe a mm gap, allowing the hammer and pin to function/fire, yet not enough contact. any ideas?
i googled it a little, and observed one comment that the gun is the best single shot auto on the planet. Lol.
i forgot to add, i also shot federal high density rounds, and they cycled perfectly, so more to add to the mystery, hopefully a bad lot of Kent is to blame, as it has fuctioned fine for two years, and yes i clean it. Lol.