Today I inherited my Mother’s S&W 4013 which she used as a duty pistol before retiring almost 10 years ago. It sat in its case for almost 10 years before she decided to give it to me.
Today we opened the case for the 1st time in 10 years. I read the manual, took it apart and gave it a good lubrication as it was bone dry and in desperate need of one.
Took it to the range, and every single round fired. The problem is after ejecting the casing the slide comes back to its original position but stops about a third of an inch sooner than it should, just enough where the trigger does not reset all the way, not allowing me to make a second shot without tapping the slide forward with my hand.
I asked the range master and he said that it may be the ammo I was using (Federal 40 S&W 180 grain from walmart).And that they are loaded really light, which means they may have issues with my heavy slide. I did not try any other brands of ammo. He stated that he did not believe this to be a failure on the gun's part.
What do you think think the problem could be?
Slide all the way forward like it should be:
Slide a third of an inch back from the complete forward position after firing: