Frizzen (aka hammer) won't open fully when the flint strikes it.

[Rob M.]

G

Sounds like the frizzen is actually rebounding. Get your phone out and take a slow motion video of a dry fire and analyze the results frame by frame.

You can also put your hand just forward of the frizzen, so that it just barely touches it when it fully opens. Reset and dry fire with your hand in that position and if you feel it touch your hand, its rebounding. Sounds like it needs a stiffer feather spring.

Good call ! Check for rebound first ...you beat me to it . Sometimes its so fast you can't see it let alone someone that is new to the game ...