The ten gauge mag made for the 3 1/2 inch shell is very rare. There were probably less than 15 built. They weigh between 10 1/2 and 11 pounds and the barrels are straight at the breech end. I have seen several and the ones I saw were made by Remington. I have also heard of a few older 10's going back to Remington and being fitted with the 3 1/2 inch chamber barrels. The 12 gauge mags with a factory 2 7/8 inch chamber are also rare but I think there were a few more of them built than the 10 gauge.
|