I for one hope that gun is not 3". Can you say flinch in big letters. Shoot a box of 3" shells in a six pound gun and you will have one major flinching problem.
I suspect you have a ignorant person, listing a gun with poorly interpolated information. Stupid is as stupid does and a person who does not know how to measure a gun or read proof-marks should be stocking shirts, not working is a gun room. And that is why I do not buy guns from Cabela's. You can do all the work for them and figure out what they have, what it is worth and then try to educate them yourself if you want. I will just shop where the people have some basic competence.