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I have removed the stock and took out the trigger and safety. When I try to raise the bolt handle it feels like it's hitting on something but can't see anything obviously out of place.

My Remington targetmaster model 510 is stuck. The safety don't work and the bolt won't open. The safety lever only moves part way and can be released by pulling the trigger, and pushing it forward still doesn't allow the bolt to lift and open.
I hesitate to start taking the mechanism apart, it ...