Clem Bronkoski
Well-Known Member
When Going from a brake to a suppressor how much h does it effect barrel harmonics?
Supressor question
- Thread starter Clem Bronkoski
- Start date
I experienced minor point of impact changes when switching between a brake and suppressor which I presumed were due to changes in barrel harmonics. That said, POI shifts were minor and accuracy was generally better when shooting suppressed.
cowboy
Well-Known Member
Everyone attributes POI shift with a suppressor to be barrel harmonics. I don't deny that one bit but also keep in mind that with a suppressor you will gain a slight amount of velocity versus a brake. It won't be enough to notice on paper until you really stretch it out beyond most people's normal shooting distances. A simple Chrony session will tell you the difference.
On the rifles that we put Cans on we ended up getting a little better accuracy!
EDIT:
We didn't have much if any POI.
EDIT:
We didn't have much if any POI.
Last edited:
Clem Bronkoski
Well-Known Member
ok thanks guys. I'm considering getting one if I can scrounge up the $$
DougsCamo
Well-Known Member
You won't regret it though you probably are going to have to rezero your rifle. Mine shifted POI about 1.5 inches low and right. It's a real pleasure shooting a suppressed rifle!
Buckskinner
Well-Known Member
I would think harmonic differences would depend on barrel profile. I run on carbon barrel and notice very little difference in POI. That's not necessarily based on harmonics but still little difference. And I'm talking .1 MRAD high and vertical (don't remember if left or right) @ 100.
I second, you won't regret it. Eliminating the percussion from the shot is as beneficial as the noise.
I second, you won't regret it. Eliminating the percussion from the shot is as beneficial as the noise.
I'm told by people more knowledgeable than I (I only get to use suppressors outside of Canada), that it is common to see accuracy improve (slightly) with a suppressor due to the effects on the rifle as well as on the shooter. I have seen slight POI shifts, though I have yet to see accuracy adversely effected.
In general, the rifles I've used have shot great with a suppressor and been a pleasure to use!
In general, the rifles I've used have shot great with a suppressor and been a pleasure to use!
It seems to affect the "pencil" barrels more than the heavier ones. Harmonics being the obvious culprit. I have a couple heavier barrels that are not affected at all and a couple thin ones that see up to an 8" poi shift. Group size is similar, but they seem to move. Good luck!
blksno
Well-Known Member
what do you think a change in 'harmonics' is going to do?
Do you understand the question the way you asked it? Im not trying to be a dick, It's a serious question.
Clem Bronkoski
Well-Known Member
Aw man, you mean I have to go to the range again!! LOL
Clem Bronkoski
Well-Known Member
Harmonics is the movement of the barrel. Any change in the dampening effect (adding weight or length to the barrel) will cause a change. Heavier barrel are less susceptible to it than shorter barrels. That's the reason they make tuners or we as recorders look for an optimum load and seating depth.
blksno
Well-Known Member
Correct...but harmonic CHANGE doesn't equate to positive or negative in accuracy or poi shift. There is ZERO proof, from any test ever done, that will show a change as being repeatable from one barrel to the next, especially with one brake or suppressor to the next. There's just to many variables.
So by asking about YOUR barrel, and YOUR brake, and YOUR suppressor. it could be X change that completely screws up your groups and shift...or it could be X change that actually makes it better. You'll never know till you try it, and anyone throwing guesses out there is just pulling a guess out of their ***.
