Originally Posted by GaryGlock
That's just a characteristic of the gun. Slap her around like a dirty Russian. I've heard of people trimming the spring on the firing pin but I haven't done it and wouldnt wanna risk it personally. Like I said just slap it around.
The firing pin spring would have nothing to do with the described problem.
Most likely, in order are: dirty chamber, dirty chamber and dirty chamber. There are other rare instances of burs or other problems but removal of 60 years of dried comsmoline, varnish, and who knows what else usually fixes the problem.