TargetMaster model 510 - how to unload

[njhockeyfan]

I just inherited an TargetMaster model 510. I have been going over it's operation before taking it out to the range.
I have worked the action several times but I and cannot figure how to open the bolt without pulling the trigger first.

What if I want to unload a live round without firing it? Is this possible?

Thanks

[njhockeyfan]

someone gave me the answer.

Have to push the safety to "ready to fire" to open the bolt.