It’s not nearly the same effect. Additionally, a pump action shotgun is not a Model T Ford. I can pop two clays at the skeet range with my pump, just as easily as I can with my over-under. I shot a Benelli auto a few weeks ago at the range and felt that my Mossberg pump was more accurate. That could just be due to my familiarity with it, but the point stands. A pump action shotgun is a fine weapon. Sure, it’s not as quick as a semi-auto in a combat situation, but I highly doubt that’s going to matter for 99.9% of legal gun owners.