More information might be helpful, I agree..
It's a Baikal IZH-43 side by side 12 gauge with a 20" barrel. I'm refering to when I try to open the shotgun to extract or insert shells. I've read a bit where that is known 'problem' with this particular gun, but I haven't read any specific ways to fix it.
Does that help better articulate what I'm really asking?