Have a 1970 Sheridan Blue Streak that looks bad but pumps up pretty strong and holds air well that has developed an issue I can't figure out so hopeful someone else has run accross a similar issue and can point me in the right direction.
Had a few pumpss in it and every week or so would dry fire it to make sure it was holding air. Went to test one last time before boxing it up for sale and pulled the bolt back to dry fire. When I did it would mini fire each time I tried to cock the bolt and released tension. It will not pull hammer back far enough to engage sear so can't be fired with trigger. However each time you pull back bolt far enough and release it puffs a little air until valve empties.
Opened up the back and everything seems there and unbroken except the hammer has a cast ring that is only a half moon. No pieces came out for the other half and I don't know if it is supposed to be that way or not.