Thread: Bolt Problems

Hey guys I have a Mossberg ATR 100 chambered in .243 around 5 years old with only max 60 rounds through it, recently something has happened to it and nothing comes to memory as to knocks or any thing on my end. When I half cock it, rifle has bolt phase of open, one click and fully closed, so when it is on one click/half cocked and I pull the trigger the bolt closes itself and the pin goes off. I fortunately have not had this happen with a live round in the spout. Found this occurring when I was cleaning the rifle. There is no rust on the bolt and it has always been regularly cleaned. Also there is nothing interfering with the action or the bedding. So basically am after any information as to why this is occurring. So just in summary when I have the bolt half cocked and pull the trigger 4/5 times the bolt slams shut and the pin goes off. Does not occur when safety is on. Also finally the bolt is solid when it is half cocked i.e. it locks strongly into place and does not move unwillingly.

Thanks in advance for any info.