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  #1  
Old 06-17-2012, 02:00 PM
EBacon EBacon is offline
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Bad mags?.




I have had a 90smodel hp in 9mm for many years, bought it new, a few years ago it started giving me trouble.. First, it would not load /cycle properly, I changed extractor and spring, then I blamed wwb ammo despite never having issues in the past. Then the slide would not lock back on an empty mag, I blamed it on a bad mag, and put the gun away. This has always gnawed at me.... I even took it to a local gunsmith -frank at f&d - who charged 350.00 to tell me it needed cleaning :-/<br /><br />Recently I bought some wwb, dug out some mags I purchased new with the gun but never used and headed to the range..... No feed issues this time, but the slide still isn't locking. also I sometimes find it difficult to pull the hammer back. <br /><br />I can't help but suspect there is something else wrong, maybe the main spring, as I seem to have ruled everything else out. It should be noted this all started when I took off the factory hammer for a brownells loop hammer...... <br />Sent from my iPad using Tapatalk
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Old 06-17-2012, 02:14 PM
chuntaro chuntaro is offline
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Sounds like you have ruled out about three of four common causes. Your main spring is most likely unchanged but I could see your recoil spring as a factor. If you changed hammers but kept the stock main spring I do not fathom interference with slide lock on empty from that move.
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Old 06-17-2012, 04:20 PM
EBacon EBacon is offline
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Recoil spring may be the next option......
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Old 06-17-2012, 06:51 PM
GT40DOC GT40DOC is offline
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Will the slide lock back if you manually cycle the slide on an empty mag?
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  #5  
Old 06-17-2012, 11:29 PM
EBacon EBacon is offline
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No it will not, I tried it with the keeper from my .40cal hi power and it locked back.... Guess that's the culprit.
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  #6  
Old 06-18-2012, 02:00 AM
CWarner CWarner is offline
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The most likely cause was the change of hammer. Some hammers drag inside the frame at the radius on the bottom rear corners. It could also be the hammer strut pin. These two areas can and do cause the problem you describe.
They can drag enough to short stroke the gun. Besides, the problem didn't start until you changed the hammer. Logic says start there.

.40 mags don't have as much tension on the slide, hence the full cycling , or lock back.

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Last edited by CWarner; 06-18-2012 at 02:03 AM.
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  #7  
Old 06-18-2012, 04:53 AM
chuntaro chuntaro is offline
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Thanks CW. I did have the feeling there was something I was overlooking or was missing. Hammer drag, something I have not experienced or observed in these pages would do it. I have had all my new hammers installed by pros such as yourself that are equipped to detect something I can overlook.
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Old 06-18-2012, 05:34 PM
GT40DOC GT40DOC is offline
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I love it when I can learn something new.....now if I can just remember it for more than 5 minutes!!
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Old 06-18-2012, 06:59 PM
chuntaro chuntaro is offline
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They in the medical community are hoping to make some advances in Alzheimer's treatment. They are currently conducting some test but there is a shortage of volunteers.
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