A Pawn Shop find. WHY? I'm not sure. It was like candy and the price wasn't hateful, so I couldn't say no. It's a Thompson Contender with a 7X30 Waters Barrel. Ammo is scarce but as a last resort, I can form it from the parent 30-30 case. On-line reviews are excellent as far as accuracy. Mediocre as far as ballistics. It's a 30-30 that is necked down to 7mm. A flat shooter but it is weak compared to other 7mm cartridges. Recoil should be minimal. Options for other caliber barrels are pretty expansive. I can even convert it to a pistol. Lots of options. Anyone else have any experience with the 7X30 Waters?