When was Your Winchester Made? -Please Select Your. Models and serial ranges) which in addition to the Serial Number Application. Winchester Model 100 Hammer Lock Thanks RFC357. This gun recently had unusual discharges. It entered 'full auto' fire. Some internet posts seem to call this 'slam fire'. After brief inspection and a couple of more shots, it fired while closing the bolt while loading, with the safety on. I did a thorough cleaning, taking apart all of the gas mechanism and bolt parts. The three piece bolt mechanism did seem sticky with dirty oil and some metal shavings, but worked smooth after cleaning and reassembly. When I noticed the 'hammer lock' in the trigger mechanism operating counter to my intuition, I didn't dissassemble it, wanting to know more about normal operation before digging into it. I've reassembled the gun and no problems have repeated in about 20 shots. The gun has the safety recall firing pin installed. I'll be taking this to a gunsmith before next hunting season. If anyone has specifics the gunsmith should look for, please let me know. Thanks RFC357. This gun recently had unusual discharges. It entered 'full auto' fire. Some internet posts seem to call this 'slam fire'. After brief inspection and a couple of more shots, it fired while closing the bolt while loading, with the safety on. I did a thorough cleaning, taking apart all of the gas mechanism and bolt parts. The three piece bolt mechanism did seem sticky with dirty oil and some metal shavings, but worked smooth after cleaning and reassembly. When I noticed the 'hammer lock' in the trigger mechanism operating counter to my intuition, I didn't dissassemble it, wanting to know more about normal operation before digging into it. I've reassembled the gun and no problems have repeated in about 20 shots. The gun has the safety recall firing pin installed. I'll be taking this to a gunsmith before next hunting season. If anyone has specifics the gunsmith should look for, please let me know. I own two Win Model 100's, a rifle and carbine, both in.308. Both have had the firing pins replaced and both function perfectly. I use the carbine all the time for deer hunting in Northern Wisconsin. The key to reliable functioning is keeping them clean and don't drop the magazines. My carbine occassionally jammed. I replaced the extractor spring with one slightly stiffer and it has never had a jam since and now throws the cases 15 feet or more. I'm now in the process of glass bedding the carbine to tighen up its groups. Interpol turn on the bright lights download. I did the rifle several years ago. Actually they are very easy to take apart. Remove the forearm and trigger guard screws, pull the bolt handle all the way back, while holding it there lift the front of the barrel up tilting it away from the stock and remove the complete action from the stock. Once you do this a couple of time it becomes very easy. It is sad that Winchester quit making them as they are a great gun, better than the Remingtom semi-auto, but alas Winchester is now too gone. The reason Winchester quit making them was the high cost to manufacter them and not because they jammed as commonly believed, they just couldn't compete price wise with Remington's semi-auto. I own two Win Model 100's, a rifle and carbine, both in.308. ![]() Both have had the firing pins replaced and both function perfectly. I use the carbine all the time for deer hunting in Northern Wisconsin. The key to reliable functioning is keeping them clean and don't drop the magazines. My carbine occassionally jammed. I replaced the extractor spring with one slightly stiffer and it has never had a jam since and now throws the cases 15 feet or more. I'm now in the process of glass bedding the carbine to tighen up its groups. I did the rifle several years ago. Actually they are very easy to take apart. Remove the forearm and trigger guard screws, pull the bolt handle all the way back, while holding it there lift the front of the barrel up tilting it away from the stock and remove the complete action from the stock. Once you do this a couple of time it becomes very easy.
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