We've gone through a few bricks of the Quiet segs killing rats at night with NV on dairy farms. Most are larger than red squirrels I shoot off the feeder, and closer to grays in size. Zero to 20 yds we get quick kills to DRT. Beyond that can expect run-offs with body shots. We have no inclination to retrieve them. The farmers are more than happy to have us kill as many as we can. They don't disturb cows, and we shoot them inside barns, often right in the feed troughs. Vertical dispersion limits practical use to 25-30 yds.
