I was recently given a model 99C chambered in 308 win. The rifle has an issue I am not able to figure out so I was hoping to find someone with more experience with this given right for model. The issue is when a I gently actuate the lever the rifle it functions normally. It chambers, ejects, safeties work etc. If you add any force when actuating the lever, the action locks up and you have to pull the trigger for it ti allow the action to open. It’s all fine and good on an empty chamber, not so much with a live round chambered. I realize the safety locks the action up as well. Moving the safety back and forth doesn’t release the action when it locks up. This only occurs when you forcefully work the action. Any suggestions would be greatly appreciated.

Jon