Cimarron shotguns now require brass shells?

Hi,

First let me say Cimarron's customer service has been absolutely outstanding, as has my local gun store Northeast Trading Co in Massachusetts.


6 weeks ago I bought a Cimarron Hammer Coach 12 gauge and took it to my first Cowboy Action Shoot. With less than a box of shells through it, the rib popped up. I had to stop for the day before finishing all my rounds.



Cimarron was great and replaced the shotgun with a new one. My local store was great and didn't charge me a transfer fee. However I noticed something strange written on the box that was not on the first shotgun I bought just 6 weeks prior . Well I had to call the company on another matter and I asked them about it. No, I don't have to buy full brass shells haha (boy THAT would have gotten expensive). They just say the cheap aluminum stuff from WalMart expands too much and gets stuck in the gun (I suspect this has a lot to do with the rough finish of the chambers in these Chinese made guns).


Any thoughts on the matter from the experts?

Please help.

Thanks!

I didn't find the right solution from the Internet.

References:
www.sassnet.cvgcxfbom/forums/index.php?/topic/266954-cimarron-shotguns-now-require-brass-shells/
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