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A shotgun using 12 gauge 00 Buck Shot is used for the test. The difference between other tests and this one is that we used a much larger backdrop to see the shot spread. In this instance a Remington 870 with full choke produced some interesting results. A 6' x 6' shower curtain set at 50 yards was able to give a good visual on where the shot spread.
In response to videos of shooters taking shots at 80 yards, we took a few shots of our own. A shotgun using 12 gauge 00 Buck Shot is used for the test. Agqin, we used the Rewmington 870 shotgun with full choke. A 6' x 6' shower curtain at 80 yds still did not reveal the full extent of the 00 shot spread.
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Lansky Retractable Diamond Rod Sharpener review added in the Gesr section.