I got my Uberti .32-20 to the range yesterday, I found out that the tolerances are really tight, when I went to use Winchester factory ammo, some of them would bind up the cylinder. Not all of them, some of them. I tried some handloads, 115 grain Lyman cast SWC with a light load of 2400.
When I got home, I checked and found that Remington factory ammo seemed to work just fine except one or two. Then I checked out the Winchester rounds versus the cases that did work, the rim thickness between the two was .007-.010".
Still, the action on the Uberti is like glass, and it shoots to point of aim with my handloads. With some case selection, and buying Remington factory ammo I think, it should be fine.

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Vaya con Dios

Good to know the quality is still there in Uberti products.

I have an old Colt revolver in .30-20, and I hand-load for it. It works fine, but the caliber has a few things to be aware of. The case walls are relatively thin, and the cartridge is bottle-necked and slightly tapered. If there is any lubricant in the chambers, and if the loads are relatively high powered, you can have problems with the casings setting back upon firing, binding the gun up.

Does this describe what you might be experiencing?

FWIW, I use Unique and cast bullets with my home brew ammo, and have not had any trouble.

The .32-20 is a great, classic old caliber with a few quirks of its own, but is a lot of fun.

I have had very good experiences with all of the Uberti products (new and used) that I own.

I like it. The Uberti's are very well made revolvers. Your post makes me realize that I no longer have any guns chambered in 32/20 even though I reload for it. I think this is going to cost me some money.

I decided to further prove that if it was the gun or the case, and I went through a bag of brand new Winchester .32-20 brass and checked each and every one of them to see if they would work. I had one that would not let the cylinder rotate at all, so I took a picture of it with a case that would. You can see it on the left, and you can see how thick the rim is. No wonder it wouldn't work, again, a brand new case.

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Vaya con Dios

I've got two boxes of factory .32-20 ammunition, and no longer have a gun for them. Since I consider selling anything a hassle, I may have to buy one of these revolvers just to shoot them.