Most likely you have the wrong ammo, you need 9mm Luger. Ceck the box, does it say Makarov or luger. Because Silver Bear in that weight bullet is only available in Makarov, which is a larger diameter than Luger ammo.Silver Bear 94 grain 9mm ammo
I'd hook the top of the ejection port on a solid piece of wood and push down on the frame (finger off the trigger). Don't use a table or other piece of wood that you care about.
If you do decide to take it to a shop or smith, call first and ask how they want you to bring it in. Don't just walk in with it.