Yeah, I puckered up on the idea thinking I might have to buy the thing. I shot two different loads through it, and the first two shots were right on the money for the published data. Then the third shot, which was a different load entirely, including hull, powder, wad and shot size was fired through it. The expected speed was 1500 or so and it clocked in at over 1700. I hope that's wrong, because it was 1-1/8 oz of lead. That's rather brisk, even for Longshot data.