What is POI Shift?
We get a lot of calls from people who are concerned with POI, or Point of Impact, shift when using a suppressor. Unfortunately, a lot of people aren't 100% sure what that is, even though it's a very simple concept. At a high level, POI shift is simply the shift of the bullet when a suppressor is installed. It's typically measured in MOA (Minute of Angle) - so a POI shift of 2 MOA would indicate a 2" shift at 100 yards, 4" at 200 yards, etc... With suppressors, there are really 2 types of POI shift to be concerned with:
1. POI Shift When Mounting the SuppressorWhen you put a suppressor on, or take it off, you'll typically see some POI shift. We've run quite a few tests on this and have found that the initial POI shift tends to be more impacted by the threads on the weapon rather than the suppressor; so, if you run 10 different suppressors on the same gun, they will generally all shift in the same general direction. There are a couple of cases where you'll see no POI shift at all:
- If the threads on your weapon are perfectly aligned with the bore.
- If you are using a suppressor with a larger bore, it typically won't impact POI as much as a smaller bore suppressor. (It won't be as efficient as a smaller bore suppressor either.)