Quote Originally Posted by Vermin Al View Post
It could be a leaky breech seal or maybe a slack grub screw holding down the magazine activator pin retaining plate.

I fire a couple of VFG felts plus pellet to clean my Pulsar barrel.
I was looking at those felt pellets yesterday, I just use a rod or pull through normally.

The leaky breech seal MAY just be my imagination, the Chrono results certainly suggest everything is working well with pressure and seals.