I had zero poi shift, but so far I've only shot out to 100. I don't have much to compare it to, but I love the light weight. I get a bit of heat mirage after three normal range rounds (without the cover). I'm shooting a 260 rem, and the Harvester eliminates recoil. I'm guessing that is the same for most silencers. Noise reduction is great. Seems like the round hitting the berm is louder than the shot. I know that's an exaggeration, but it is a noticeable reduction in noise. It is a long silencer. So far I love it. In a couple weeks I will have a Varminter 2.0 and an SDN 6 to compare it to. Pictures from the range will have to wait till next trip.