Originally Posted by greener4me
As this topic proceeds the information is being presented piecemeal and as John E rightly says it is hard to determine or pinpoint the actual site of restriction.

G4me
Sorry, I'm still learning what information is needed. I know it isn't the gun because new RMC that I bought and used RMC hulls bought from a different person work fine in the gun and have for years.

While it is possible the ones that don't fit were from different batches, that they all have a custom name on the base suggests that they came from the same production run.

I will try the sand & polish approach on a couple of hulls, if that doesn't work I'll see if they fit in any other 10 g that other cowboy shooters in the area use or sell them off.

I have become addicted to English hammered shotguns to the detriment of my wallet.