Frustrated:suppressor problem

[Apple a Day]

So, I finally got my .22 suppressor... and the rounds are contacting the aperture in the front cap, so it seems.

I tried it on a Colt Rail gun (.22 1911). With the suppressor on it the point of impact suddenly jumped five or six inches up and to the right. I tested the pistol with just the adaptor and it didn't change. Add the suppressor and it moved way out, some rounds keyholed.
I went home, cleaned it, made sure everything was tight and came back to try it with a Savage Mk II with a heavy, threaded barrel. At 25 yards with the suppressor the rounds weren't even on the paper. After a couple of rounds I took off the suppressor, disassembled it, and noticed where it was contacting. I attached just the empty body with no end cap and the point of impact was perfectly centered where the rifle was zeroed. Then I added the end cap with no internal baffles and the rounds went wild.
BTW I tried both 40 grain standard velocity rounds and .22 shorts. Neither worked.
So after a few rounds of each I quit before it did any real damage.

The hole appears centered but I haven't marked n' miked it to check. I suppose one option would be to re-bore the hole a little larger.
Any words of wisdom from the peanut gallery? I've already sent an email to the manufacturer to see what they have to say.

 

[aubie515]

Sounds like you need to contact the suppressor manufacturer to have them check the suppressor.

If I were you, I wouldn't continue to shoot the suppressor until it is inspected. No sense in damaging the firearms or having a serious injury.

 

[hentown]

What brand is the suppressor?

 

[Odd Job]

Interesting problem, seems to me the problem could be an off-centered hole in the end cap, or off-centered threads on the can.
Like Aubie says, I wouldn't use it again, I would send it straight back to the dealer.

 

[Apple a Day]

I contacted the dealer and am sending back the end cap. It's a Sicarius .22 from Sterling Arsenal in northern Virginia. I'll post when I get the piece back.

 

[wally]

Were the barrels factory threaded or done afterwards?

A common mistake is to index on the barrel OD and cut the threads, but this can lead to an offset between the bore and the threads making them non-concentric. The fix is a four jaw chuck in the lathe and indexing on the bore grooves.

Whenever I put a suppressor on a gun for the first time I check concentricity with a length of drill rod -- standard sizes fit snuggly in .30 cal and .22 cal bores, I had to turn down a slightly larger size to get a good fit for 9mm & .45ACP

The problem could be the can, or it could be the barrel threading.

Please follow-up after the suppressor manufacturer responds.

 

[Captains1911]

As far as I know you can't legally ship suppressor parts, you must ship the entire can.

 

[Odd Job]

I think for this problem the whole can should have gone back, the end cap could be okay but the threads on the can could be off center.

 

[Apple a Day]

Wally,
The Savage was factory threaded while the Colt has a threaded barrel which takes a threaded adaptor to upsize it to the right dimensions. If only one of the guns had a problem I'd have said it might be the threads/facing but it happened on two different guns. I'm thinking it's either the threading on the can or the aperture on the front is off centered or just a wee bit too small.

 

[TIMC]

Sounds like a can issue since it was the same on different guns.

 

[wally]

Sounds like a can issue since it was the same on different guns.

Problem is, if the first gun he tried it on was not concentric and had a baffle strike the suppressor could be damaged and then be bad on all guns.

Hopefully the manufacturer will straighten things out at no cost if its was their manufacturing error, or at a reasonable cost if his gun was the problem.

 

[LawBot5000]

>keyholing
>baffle strikes
>blames suppressor

I bet you it isn't the can.

My money is on one of the following:
1) using overly heavy rounds with a 1:16 twist barrel. Ie Aguila SSS 60 gr subsonics.
2) Barrels aren't properly threaded and the can isn't in line with the barrel.
3) Any combo of these plus the suppressor is now knocked out of alignment because someone smacked it really hard with a bullet

 

[crazy-mp]

I would bet on the can, if its user serviceable with multiple baffles like K baffles not mono-core one could have been dropped in backwards or even not bored all the way out during the manufacturing process.

After the first bullet made contact with a baffle it is possible the edge of the baffle to be deformed and created a lip for subsequent rounds to hit as well.

I have not seen any problems with factory threaded guns other than the American made Savage .22 rifles that are threaded too deep for most .22 suppressors, and the factory threaded Browning Buckmarks that often times need a spacer.

 

[bikemutt]

I posted up about a Huntington Arms Guardian .22 that was causing me trouble with a Ruger SR22, http://www.thehighroad.org/showpost.php?p=8982311&postcount=1. Anyway, I had sent the can back to have them upgrade the baffles to stainless steel, took a few guns to the range once I got it back. All hit the same POI with, and without, the can, except that SR22; same problem, 4" left, 4" high.

Considering the suppressor made using the sights on that particular pistol a real challenge, I sold the pistol.

As an aside, I was treated very well by Huntington Arms, they upgraded my end caps for free and handled everything in a timely and pleasant manner.