Buffalo Classic opening on firing

[Nobade]

I was out shooting the BC last weekend, using the Lee 405HB bullet and Pyrodex. The rifle started opening itself, not a very reassuring thing. I thought maybe I hit the latch accidently, but two more tries and it did it both times. I don't see any crud in it, springs seem to be OK, does anybody know a common reason for this to happen and a fix? Thanks!

[Hairtrigger]

Break open semi-auto!

 That gun would be headed back to the factory if it was mine

[stimpylu32]

Noblade

Check out the FAQs under pop open med. for some more ideas but the most common are the latch shelf has oil or some other crud on it . Shooting Black or black subs will put a bunch in the action  ( trust me i know ) also check to make sure you are closing it with some force ( snap close ) .

Also check to see that you are getting a proper latch engagement , its in the FAQs .

stimpy