I would clean, get a look through the barrel to make sure there are no obstructions from bugs and stuff. After cleaning, oil . Function check it. If everything seems to be in working order I would consider it fine to shoot.
Buy some new ammo like the others have suggested. 40 years in an attic is not in any sense ideal storage conditions.
Last edited by alex0535; March 22, 2013 at 10:28 PM.
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