JoeInTucson Posted July 9 Share Posted July 9 Hello, Well I had been contemplating a roll crimping project for my semi auto shotguns, a 940 JM Pro and a Beretta Xtrema. Im not going to do this just yet. After troubleshooting and inspection, I found that the 940 JM Pro likes shells that have a taper on the end. Some of the shells I was using were made for the Browning Citori. It is fine with shells that have little taper, so I never really worried about it. The Xtrema is generally fine with those too. But the Mossberg likes the taper. I found this by using some factory shells and noting how much taper they had. So I tweaked the cam adjustment on the MEC. The shells have more taper and dry cycle fine now. I will be using them in Sunday's match. Im jazzed. It is so rare that you get to cancel a project and save some bucks. Link to comment Share on other sites More sharing options...
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