Was just told that the reason my POI changed(lower) with a new suppressor was due to the extra weight hanging on the end of the barrel, and that MV actually increases with a suppressor. Easy to test MV(when temps get closer to tolerable here in Wisconsin), but are these statements actually true?
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POI change using a suppressor
- Thread starter Dunraven
- Start date
My speed didn't change with a suppressor but the POI did. I'm pretty sure the suppressor location/weight influences the POI. Did not have to change the load recipe at all. . . for any of the different calibers that get shot suppressed.
It can change both. The point of impact is generally different between suppressed vs Unsuppressed. The speed can vary depending on the can but doesn’t always change
Your barrel is a tuning fork. The can attached to the end changes the harmonics. I’ve seen 1 moa to 4-5 moa changes from adding the suppressor depending on the barrel
It can also take a load that shoots good and make it shoot better or worse when suppressed.
The impact can shift any direction as well. It’s changing the “tuning fork” aspect of the barrel. Not just dropping the round due to the added weight
Your barrel is a tuning fork. The can attached to the end changes the harmonics. I’ve seen 1 moa to 4-5 moa changes from adding the suppressor depending on the barrel
It can also take a load that shoots good and make it shoot better or worse when suppressed.
The impact can shift any direction as well. It’s changing the “tuning fork” aspect of the barrel. Not just dropping the round due to the added weight
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Yes.
Hanging anything on the end of your barrel is going to change POI because it changes barrel harmonics.
The amount of change is going to depend on the barrel profile and the weight of the accessory.
I saw about a 5-8 fps increase when I added my can.
Hanging anything on the end of your barrel is going to change POI because it changes barrel harmonics.
The amount of change is going to depend on the barrel profile and the weight of the accessory.
I saw about a 5-8 fps increase when I added my can.
I usually get around 10fps increase in mv. Every now and then a barrel’s speed is the same with or without suppressor.
Because it’s like a tuning fork sometimes accuracy increases, sometimes it’s the same and sometimes worse. Usually differences are very small though.
And POI shift always.
Because it’s like a tuning fork sometimes accuracy increases, sometimes it’s the same and sometimes worse. Usually differences are very small though.
And POI shift always.
They key is that it’s repeatable. If not that’s a problem.
Also, first shot POI through a “cold” suppressor may vary slightly than the next few shots. I’ve read some guys swear “their brand” of suppressor doesn’t do it. TBAC comes to mind but don’t quote me on that. I usually see about 1 MOA difference with my Omega 30. Most my rifles 2-4 MOA difference in suppressor and no suppressor.
Also, first shot POI through a “cold” suppressor may vary slightly than the next few shots. I’ve read some guys swear “their brand” of suppressor doesn’t do it. TBAC comes to mind but don’t quote me on that. I usually see about 1 MOA difference with my Omega 30. Most my rifles 2-4 MOA difference in suppressor and no suppressor.
The POI impact shift is 'primarily' due to weight but other factors can cause it too. If your end cap is not square to the correct plane, or if you have poorly designed baffles they will cause even more. Likewise your mounting option can easily cause a huge shift as well. Properly designed cans from reputable manufacturers have generally sorted this out hence the statement would be true under those circumstances. That said if you mount a muzzle device incorrectly expect a larger than normal shift.
MV...if it changes at all in your setup it will be minimal. This usually is not something that is true. You might gain 5 fps or something like that but unless you are a top level F Class or some type of competitor with perfect ammo your normal extreme spreads more than cover the extremely minor 'possible' changes induced by the suppressor. If you get a gain at all it's more likely the ammo, not the suppressor.
All perfectly normal. Sort of similar to the effect of resting your stock on bags vs resting your barrel on bags.
