Don't forget the considerable leverage the gun has to push that shell into the chamber, you may not feel the resistance.
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Good point...tonight I'll make up a fresh hull packed with #9 shot and try it again manually with the barrels off the frame and the extractor relaxed down flush...se if I can feel anything.
Another practical option is to take a 6" machinists scale ruler and slide it into the chamber.
Tried exactly that technique gently sliding a sharp corner of the 6" steel rule in and out several times at several different places...wasn't able to feel anything change.
Tonight I'll get in there with a high intensity light and see what I can see.
I admit that the 2 3/4" plastic shell used in what is probably a 2 5/8" chamber is not going to be a big deal. The plastic is thinner and slicker than the paper hulls of the past.
Yes, good point...and I have a couple thousand once fired Win-AA and Rem-STS hulls so I'm only planning to use them one time with Goex, regarding any possible melting or weakening, etc.
I'll get hold of a stiff chamber brush to use in the chamber as part of the cleaning regimen.
