AEA Challenger Standard bolt won't lock back when cocked

Have you adjusted the trigger? Anyway, it sounds like you have acquired an over sensitive hair trigger. Try backing off a little.

My thoughts as well. The sear engagement might be too little and it isn't even catching when you cock it. Increase the sear engagement and/or the sear spring pressure screw if it has that adjustment and see if that works.
 
I have a Challenger .357 and had a similar issue. I almost returned the gun; before I discovered that, due to a poorly fitting stock, part of the action was rubbing on the stock and would keep the trigger from fully engaging. A little material removal from the stock and the gun was safe to shoot. It is still a bear to cock; but I’m working on that.
I have a Challenger .357 and had a similar issue. I almost returned the gun; before I discovered that, due to a poorly fitting stock, part of the action was rubbing on the stock and would keep the trigger from fully engaging. A little material removal from the stock and the gun was safe to shoot. It is still a bear to cock; but I’m working on that.
Sounds like the hammer spring is too tight preventing sear engagement.
Thanks to everyone who responded to my post. I have since discovered a broken sear that is currently under warranty repair by AEA.
 
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