QB-78 Breech - Leak?

[hiroller]

It's been a pleasure shooting my new MM QB-78 these past few days; it's pellet on pellet accurate and just an overall joy to shoot. I'll probably hunt with it this week. I noticed something with this gun though. Oil seems to leak a little where the breech meets the tube. I'm guessing it's the pellgun oil I use. Now I add a drop on each powerlet, every reload and am wondering if I'm over oiling? I know too much can't be good either. How often should I add oil to the powerlets when replacing them? It's not bad at all, but I do notice that after shooting a round there's oil spatters on the tube right below the breech.

[Jaymo]

I think you might be over oiling just a bit. I'd try a drop on every 3rd or 4th powerlet. Maybe less often. I'm sure someone will chime in with the proper frequency.

[mikeiniowa]

Sounds like more oil than you need........shouldn't have to lube it but once every two tins of pellets. To much of a good thing is not good....could also be some drip down from the bolt...

[hiroller]

Thanks Mike.  Yeah I didn't oil it any the last two sessions and so far so good.

[SDale]

Could also be that your transfer port seal is a bit gnarled up.