Thread: Suppressor changing point of impact by inches

2-3" at 100 could be considered normal, 6" at 25 is indicative of misalignment of the suppressor. This could be as a result of poor threading, shoulder damage, bent suppressor, poorly made suppressor, etc. It needs to be checked with an accurate alignment rod before you shoot it again. A very light barrel would not help the situation due to muzzle whip.

Originally Posted by systolic

What did you expect to happen?

Adding or removing anything from the muzzle is always going to affect point of impact.

Sometimes a little, sometimes a lot.

In this case, quite a lot.

I knew it would change but wasn't sure if that much was normal.

Originally Posted by Clint Ruin

Barrels move a fair bit with a bullet moving down it . Anything that add/subtracts weight to the barrel will effect how it moves .

True.

Originally Posted by Max Headroom

You will get a POI change without a suppressor, but 6 inches is a lot at 25m. Only thing I can think of is to try that again with different ammo in case barnaul was an inconsistent batch.

I have some brass cases fmj at home I'll try.

Originally Posted by gundoc

2-3" at 100 could be considered normal, 6" at 25 is indicative of misalignment of the suppressor. This could be as a result of poor threading, shoulder damage, bent suppressor, poorly made suppressor, etc. It needs to be checked with an accurate alignment rod before you shoot it again. A very light barrel would not help the situation due to muzzle whip.

Ok. The shoulder looks fine, the dpt has lasted about 80 rounds of 308 fine so I am thinking that it's ok.

I got it threaded by a machinist friend. He also did my 308. I was going to get a stainless steel blast baffle from Darren so may see if he'll have a look at it. ..

Cheers for the advice.

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Originally Posted by Russian 22.

I got it threaded by a machinist friend. He also did my 308. I was going to get a stainless steel blast baffle from Darren so may see if he'll have a look at it. ..

Cheers for the advice.

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Did your friend centre the work on the bore when he did the threading? Make sure it wasn't centred on the outside of the barrel.

Originally Posted by Russian 22.

I got it threaded by a machinist friend.

Did he indicate off the outside diameter, or the bore? Like @gadgetman, I'm leaning towards this cause