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Suppressors Typical POI Shift Thunder Beast

jpistolero02

Sergeant
Full Member
Minuteman
Nov 9, 2008
291
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Austin, TX
For those that own the 30P-1, what is the typical POI shift you notice when going from unsuppressed to suppressed?
 
Re: Typical POI Shift Thunder Beast

On my custom 260 with a 26" light palma contour barrel, I am seeing .75moa low and dead nuts windage. I just got my stamp so I havent tested it on my other rifles, but I may this weekend. If so, I will add that info.
 
Re: Typical POI Shift Thunder Beast

Can't speak for TBAC but on a properly threaded barrel in a remmy contour or heavier we are seeing NONE to half MOA way to often for it to be a fluke on the SAS Arbiters and the Reapers. There are some that seem to say or believe that POI doesn't matter as long as it's repeatable and groups. I disagree when there are products out there that do both with very little to none POI shift....
 
Re: Typical POI Shift Thunder Beast

The stiffer the barrel the less POI change you will see.

On my 24" AWP, I have no change. On a 26" medium Palma contour (lighter than AWP), I get about 2 clicks elevation.

The vast majority of our customers have between zero and 2 or 3 clicks.

Whenever you stick a weight on the barrel, there is the potential for physical deflection and harmonic change, and the less stiff the barrel, the more both of these are possible.
 
Re: Typical POI Shift Thunder Beast

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Zak Smith</div><div class="ubbcode-body">The stiffer the barrel the less POI change you will see.

On my 24" AWP, I have no change. On a 26" medium Palma contour (lighter than AWP), I get about 2 clicks elevation.

The vast majority of our customers have between zero and 2 or 3 clicks.

Whenever you stick a weight on the barrel, there is the potential for physical deflection and harmonic change, and the less stiff the barrel, the more both of these are possible.
</div></div>
And concentric threading of the barrel!!! I have seen rifles with a larger than normal shift on a heavy barrel and it is almost always not threaded properly! TBACs got alot of proven cans in the field and if you have a large POI shift thats where I would look first.
 
Re: Typical POI Shift Thunder Beast

Thanks guys. I had two rifles threaded by a gunsmith (Mark Pharr) who seems to know what he is doing. Both rifles were almost identical at 1.25" low at 100. One is a Savage 12FV .223 cut down to 20" and the other is a Remington 700 re-barreled in 6.5X47 with a 26" Krieger barrel. Both rifles shot lights out with the suppressor, so I was just curious. I am seriously addicted now.
 
Re: Typical POI Shift Thunder Beast

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Kino</div><div class="ubbcode-body">Can't speak for TBAC but on a properly threaded barrel in a remmy contour or heavier we are seeing NONE to half MOA way to often for it to be a fluke on the SAS Arbiters and the Reapers. There are some that seem to say or believe that POI doesn't matter as long as it's repeatable and groups. I disagree when there are products out there that do both with very little to none POI shift.... </div></div>

How much POI shift a system has has been, in my experience, a lot more depenant on the barrel and gun than the can.

There are some guns that are going to have a shift, I don't care what can you have.
 
Re: Typical POI Shift Thunder Beast

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Zak Smith</div><div class="ubbcode-body">The stiffer the barrel the less POI change you will see.

On my 24" AWP, I have no change. On a 26" medium Palma contour (lighter than AWP), I get about 2 clicks elevation.

The vast majority of our customers have between zero and 2 or 3 clicks.

Whenever you stick a weight on the barrel, there is the potential for physical deflection and harmonic change, and the less stiff the barrel, the more both of these are possible.
</div></div>

+1
 
Re: Typical POI Shift Thunder Beast

I had absolutely no shift. I shot the first shot cold bore clean with can and was dead nuts on!!
I had to wait to take the next shot, cause I was so excite at how well it shot.

Thanks TB

Marcus
 
Re: Typical POI Shift Thunder Beast

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pmarcusm</div><div class="ubbcode-body">I had absolutely no shift. I shot the first shot cold bore clean with can and was dead nuts on!!
I had to wait to take the next shot, cause I was so excite at how well it shot.

Thanks TB

Marcus </div></div>

Lucky Dog
 
Re: Typical POI Shift Thunder Beast

Absolutely no shift with my 30p-1. Used it while I broken in my new Krieger #10. Took the can off every other 5 shots for 25 rounds w/ no shift between sets. avg of .224 moa. Make sure to keep your threads and barrel shoulder clean of carbon and your gtg.