Win Model 12 cycling issues

Originally I asked for help with cycling issues. I was using Federal target loads from Walmart. I didn't get any replies in almost two weeks so gave up and deleted post. I was able to get a new carrier spring and carrier plunger and plunger spring installed. If I didn't cycle the pump fast enough the tip of the shell would hit on the bottom of the chamber. I will see if this helps with loading issues. I will repost after the next range trip.
 
I underswtand that some of the Model 12s are builf for the slighly shorter 2-9/16" shell and that this sometimes causes ejection problems. You describe a chamber loading problem, but I wonder if it is also due to using 2-3/4" shotshells.

I believe that not all brands of 2-3/4 shells are exactly the same size. Do you have this problem on other brands or even different types of federal shells?
 
I've only used the federal target shells. I have some Win AA that I'll try. It mostly seemed it had to do with how fast I cycled the pump. I replaced some worn parts, so maybe that will help.
 
That the problem seems to be how fast you cycle the slide, I'd suspect that you are short stroking the slide.

I've experienced that on my Model 12 when I first got it in 1960. A friend told me about it. No problems since.

Try some more being sure you don't short stroke the action.
 
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