Benjamin Franklin Model 347 question

[Shooter]

I have a BF 347. DOM 1977  When I shoot the rifle I get a puff of air in my face.  It holds air fine.  I was wondering if there are any seals or o'rings that might be missing from the Bolt Probe or if here was some sort of seal in the pellet port.  I have tightened the bolt cam but it did not stop the air.  The gun holds air fine.

[airgunandy]

My old Sheridan and my 392 have an O-ring on the bolt, but looking at the Benjamin 347 diagram on the Crosman site it looks like the old Benjis had no seal on the bolt or in the breach.

http://www.crosman.com/pdf/manuals/B347-OM.pdf

[uncle paulie]

I had one from the early sixties that had an o-ring seal on the bolt, and I have one now from '74 that has the same. My guess is that yours has one too, but it doesn't show on the parts list. I'd give Crosman a call, I would think a ring from the newer benji's will fit.

pv