I bought a Rossi .22 single shot rifle (with interchangeable .22 mag and 12 gauge barrels) at a gun show today. It appeared a nice enough basic rifle and sold cheap. Now my question...If the rifle is broken for loading, I have no problem cocking the rifle BUT, it will not close. If I close it and try to cock it, it will not cock. The safeties position has no effect... I am not familiar with this rifle. Am I missing something basic here or do I need to get it to a gunsmith??