Still new to the suppressor world.
In your experience, would you say POI shift will be less with a shorter barrel? About the same?
POI Shift, the long and short of it
Moderators: mpallett, mr fixit, bakerjw, renegade
Re: POI Shift, the long and short of it
I'll piggy back on this thread if you dont mind.
Can someone please explain exactly WHY suppressors change the POI?
Can someone please explain exactly WHY suppressors change the POI?
A gun is meant to protect your life, not your wallet. Things can be replaced, people cant.
- curtistactical
- Silent But Deadly
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- Joined: Fri Apr 25, 2014 9:22 am
Re: POI Shift, the long and short of it
The two main reasons are:
Harmonics>The added weight on the barrel will change the harmonics of the barrel causing the shift but usually settles it down some so accuracy increases.
Non symmetrical porting>This usually happens on the lower velocity rounds from my experience with rimfires being the worst I believe because of bullet weight. The gas crosses the path of the bullet affecting the bullet path. Suppressor design will have a huge effect on this.
There are other reasons for POI shift but I found they are usually accompanied by poor accuracy as well such as suppressor mating surface.
Harmonics>The added weight on the barrel will change the harmonics of the barrel causing the shift but usually settles it down some so accuracy increases.
Non symmetrical porting>This usually happens on the lower velocity rounds from my experience with rimfires being the worst I believe because of bullet weight. The gas crosses the path of the bullet affecting the bullet path. Suppressor design will have a huge effect on this.
There are other reasons for POI shift but I found they are usually accompanied by poor accuracy as well such as suppressor mating surface.
Joseph Jones
Curtis Tactical
07/02
Curtis Tactical
07/02
Re: POI Shift, the long and short of it
so would you say then barrel length is a factor or not so much?
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- Silent But Deadly
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- Joined: Fri Oct 11, 2013 3:09 pm
Re: POI Shift, the long and short of it
Well barrel length and thickness relative to suppressor mass would undoubtedly be a factor. But of course every length/diameter/calibre is going to follow gravity differently, with a wide range of flexibility among barrels. Add in the range of weights for suppressors, between a few ounces and a few pounds, and you have a bit of a dog's breakfast of variables. So the short answer is yes, barrel length is a factor. As is everything else. Wishful thinking doesn't prevent a long and/or flexible barrel from drooping with a heavy can out front.