Very poor accuracy with my new suppressor.

[bitbythebug]

I bought a new Silenceco Harvester 338 suppressor. It makes every gun I put it on shoot 8-12"s low and 4-5"s left. I can't believe this is normal. I have a Magneto Speed chronograph and it affects some of my rifles accuracy but nothing like this Harvester. Dealer says just adjust and and shoot it. If I have to adjust that much to make it accurate at 300 yards, what will I have to do to make it accurate beyond that. Need some advice on what to do.

 

[WeiserBucks]

A change in POI is to be expected and has nothing to do with accuracy. How is the actual accuracy?

 

[akmtnhnt]

I bought a new Silenceco Harvester 338 suppressor. It makes every gun I put it on shoot 8-12"s low and 4-5"s left. I can't believe this is normal. I have a Magneto Speed chronograph and it affects some of my rifles accuracy but nothing like this Harvester. Dealer says just adjust and and shoot it. If I have to adjust that much to make it accurate at 300 yards, what will I have to do to make it accurate beyond that. Need some advice on what to do.

That's called a poi shift. You have to re-zero. Expect that in some way every time you hang anything on your barrel, or let anything touch it.

 

[FEENIX]

I bought a new Silenceco Harvester 338 suppressor. It makes every gun I put it on shoot 8-12"s low and 4-5"s left. I can't believe this is normal. I have a Magneto Speed chronograph and it affects some of my rifles accuracy but nothing like this Harvester. Dealer says just adjust and and shoot it. If I have to adjust that much to make it accurate at 300 yards, what will I have to do to make it accurate beyond that. Need some advice on what to do.

As others noted, every time you put something at the muzzle, esp. a suppressor, it will change the harmonic of the barrel and result in a change in the point of impact. Your dealer is correct, make adjustments with the suppressor on, and go from there. Good luck!

 

[grouse]

My omega 300 moved my point of impact 7" up. It was strange but still drive tacks

 

[Reelamin]

I bought a new Silenceco Harvester 338 suppressor. It makes every gun I put it on shoot 8-12"s low and 4-5"s left. I can't believe this is normal. I have a Magneto Speed chronograph and it affects some of my rifles accuracy but nothing like this Harvester. Dealer says just adjust and and shoot it. If I have to adjust that much to make it accurate at 300 yards, what will I have to do to make it accurate beyond that. Need some advice on what to do.

Try search and yes this is very common and what is causing the POI change and can change group size.

 

[Mark37082]

I understand that barrel harmonics will change with anything that touches the barrel. Maybe I got lucky, but screwing on a TBAC Ultra 7 on a 24" CF Sendero caused only minimal POI shift on my rifle. Maybe a reasonably light can on a stiff barrel had something to do with it.

 

[sturner]

I got an omega it changed my poi but did nothing to the group size on 3 different rifles
Now I work up a load with it

 

[rbwv23]

My TBAC Ultra 7 on a 22" sendero light moved my POI 4" vertically. Like others have stated though just POI, not group size.

 

[biednick]

The Harvester is a tank of a silencer. It's going to have a pretty big impact on POI. Once you rezero your scope you won't have to make any more adjustments at longer ranges than you did without the silencer. Make sure you redo your dope though, your muzzle velocity may have gone up when you added the can.

 

[mason3379]

I have multiple suppressors that I run across the board on all my rifles. I do see a POI shift but very minimal with or without the suppressors. Some of this can be caused by longer barrel length and taper and torque on your barrel.
If you plan to always shoot with the suppressor I'd zero it and shoot it.
Running several SilencerCo and have no issues with either the Saker(original version) or the Hybrid.

 

[swampbug]

I'm running a Thunder Beast Ultra 9 across 4 rifles (6mm - 30cal) and see very little POI change.

 

[kgunz11]

The Harvester is a tank of a silencer. It's going to have a pretty big impact on POI. Once you rezero your scope you won't have to make any more adjustments at longer ranges than you did without the silencer. Make sure you redo your dope though, your muzzle velocity may have gone up when you added the can.

A tank? In what regard? Length? Weight? Diameter?

It's 10" x 1.8" and weighs 22oz. Thats not outside the norm of 338 cans.

 

[Huntsman66]

Completely normal…. And it will be different from rifle to rifle. Just re-zero and enjoy!