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Daveh Offline OP
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See pics. It was still snug on the muzzle. I check that before each 3 round group. Happened on 12th shot of the day. Was working great on taming a 300 WM.
Ideas on how to check the threads and shoulder for square without pulling the barrel????

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I can do all things through Christ who strengthens me. Phil. 4:13

I DON'T NEED A WSM AS I HAVE A WEATHERBY!
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Originally Posted by Daveh
See pics. It was still snug on the muzzle. I check that before each 3 round group. Happened on 12th shot of the day. Was working great on taming a 300 WM.
Ideas on how to check the threads and shoulder for square without pulling the barrel????


That sucks! I'm not sure about checking the shoulder for square, but I do know they make rods that you can insert into the barrel to check alignment through the can.

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The alignment should be to the bore as it leaves the barrel vs. the outside of the barrel so putting in an indicator rod is one way to check, keep in mind that and indicator rod is going to have some slop where the sleeve is at the end of the rod, they have a taper so they stop as you put them in .. and the rod alights to the end and the point at the taper it touches the lands.

You should have clearance around the rod..

I recommend using a bore scope you your suppressor to see if any of the barrels are broken or damaged as well.

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Daveh Offline OP
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SS- copy!
The guts of the suppressor is a mess, I can see stuff hanging where it shouldn’t. I haven’t taken it apart in case Silencerco didn’t want me messing with it....

This aren’t complicated. I could fix it if I had the parts...


But as for me and my house we will serve the Lord. Joshua 24:15
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Originally Posted by gsganzer
Originally Posted by Daveh
See pics. It was still snug on the muzzle. I check that before each 3 round group. Happened on 12th shot of the day. Was working great on taming a 300 WM.
Ideas on how to check the threads and shoulder for square without pulling the barrel????


That sucks! I'm not sure about checking the shoulder for square, but I do know they make rods that you can insert into the barrel to check alignment through the can.


I just ordered rods from McMaster-Carr to cover .22LR, .223/5.56, 6.5 CM and .308, they cost less than $6 ea. They come in 3' or 6' lengths. I bought 3' and plan to cut each in half so I can give my buddy a set. I actually have a chart that list the caliber, dia and McMaster P/N. If someone sends me a PM, I'll send it to you and let you post it. I don't have a photo sharing site.

Here's the part numbers:
.22LR McMaster P/N 8893K191
.223 McMaster P/N 8893K193
6.5CM McMaster P/N 8893K204
.308 McMaster P/n8893K219

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That will be costly

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SiCo will take care of you.

I had a baffle let go in my Harvestor this past summer. Not an alignment issue on mine just a fatigued baffle. Could have been the same on your rig. When they repaired it free of charge they changed everything inside and the anchor brake. Came back in new condition.

Give them a call, great people to deal with.

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Daveh Offline OP
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They work Monday thru Thursday so left them a message and sent an email.

Hangunnr- how long did it take?
I really think something happened inside as I just doubt the threads aren’t centered around the bore.


But as for me and my house we will serve the Lord. Joshua 24:15
I can do all things through Christ who strengthens me. Phil. 4:13

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If it weren’t centered you would have known in the first shots.

Mine was only in their hands 4 days. Problem was it took the postal service 15 days to get it there.

When you call them they’ll issue a return order number which you write on the package.

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Daveh Offline OP
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Originally Posted by hangunnr
If it weren’t centered you would have known in the first shots.


This was my thinking but everyone keeps telling me different.....


But as for me and my house we will serve the Lord. Joshua 24:15
I can do all things through Christ who strengthens me. Phil. 4:13

I DON'T NEED A WSM AS I HAVE A WEATHERBY!
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Just out of curoisity, where did the schrapnel go? I presume most of it went forward but any to the side?


Originally Posted by mauserand9mm
Originally Posted by mauserand9mm
Originally Posted by Raspy
Whatever you said...everyone knows you are a lying jerk.

That's a bold assertion. Point out where you think I lied.

Well?
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Daveh Offline OP
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Beats me. I didn’t even look for it..... it’s all gravel...

Last edited by Daveh; 12/11/20.

But as for me and my house we will serve the Lord. Joshua 24:15
I can do all things through Christ who strengthens me. Phil. 4:13

I DON'T NEED A WSM AS I HAVE A WEATHERBY!
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Daveh Offline OP
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Originally Posted by gsganzer
Originally Posted by gsganzer
Originally Posted by Daveh
See pics. It was still snug on the muzzle. I check that before each 3 round group. Happened on 12th shot of the day. Was working great on taming a 300 WM.
Ideas on how to check the threads and shoulder for square without pulling the barrel????


That sucks! I'm not sure about checking the shoulder for square, but I do know they make rods that you can insert into the barrel to check alignment through the can.


I just ordered rods from McMaster-Carr to cover .22LR, .223/5.56, 6.5 CM and .308, they cost less than $6 ea. They come in 3' or 6' lengths. I bought 3' and plan to cut each in half so I can give my buddy a set. I actually have a chart that list the caliber, dia and McMaster P/N. If someone sends me a PM, I'll send it to you and let you post it. I don't have a photo sharing site.

Here's the part numbers:
.22LR McMaster P/N 8893K191
.223 McMaster P/N 8893K193
6.5CM McMaster P/N 8893K204
.308 McMaster P/n8893K219



Let us know if they are straight!


But as for me and my house we will serve the Lord. Joshua 24:15
I can do all things through Christ who strengthens me. Phil. 4:13

I DON'T NEED A WSM AS I HAVE A WEATHERBY!
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The suppressor shouldn't break using any of the approved calibers. They put thousands of rounds through these and should never show signs of fatigue. It is a very high potential of liability if not tested to industry standards. I don't make suppressors so have no idea what the testing is like.

Having the threads aligned with the muzzle opening is a very small part of the story. I have no clue what was done or not done here. If you are not there to see it being done the only way to verify the alignment to the last 2" of barrel bore is to have the all the equipment to do the job or send it to someone who is equipped and is very familiar with the curves inside the barrels and will not compromise the findings with terms like close enough. It is no 10 minute job. An hour would be pretty fast.

So many people threading barrels and doing barrel work just put the barrel between centers or align the center of each end at the same time and either hit the start button or just thread away. The important part is to line up the path of bore accounting for the internal curve that is present in every barrel. It takes a lot more time but if not done it makes incidents like this much more possible. This is also part of why the holes through a production brakes and suppressors are much bigger than the bullet diameter.

The whole procedure is exactly the same sort of alignment when initially fitting and chambering a barrel. On a suppressor it needs the same level of alignment as fitting a custom brake or a precision crown. The last 2" need to be perfectly aligned with the threads and seating surfaces. On the chamber end you pick up where the bullet engages to throat and 2" forward of that.

If everything check out is there any possibility a part of a patch could have been hiding down in the baffles somewhere?

It's getting late and getting a little rummy. I hope this made sense.


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If for some reason the 12th round had a bullet that wasn’t stable coming out of the barrel, that would happen.

Ask me how I know....


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My damage wasn’t anywhere near as bad as yours. Best I can tell the baffle let loose on my next to last shot. I was shooting groups with my 308 and was grouping well till the last shot in the last string. That shot went way wide of the group. I didn’t notice I had contact with the can till I got home.

[Linked Image from ]
[Linked Image from ]

Had the baffle let go sooner I may have grenaded the can like yours.

Curious to see how they handle the dent in the tube on yours, with that being the serial numbered part they can’t just replace it.

I believe the guts they put in mine are heavier duty than the original. When my Harvestor 300 was new it weighed just about 11oz. With the rebuild it weighs 12oz now.

Please keep us updated if you would.

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Just keep us up on what gets done. I am waiting in mine to get out of jail. Be Well, RZ.


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Had multiple end cap strikes on an AAC 7.62 SDN6 before I figured out what was happening. Midway brand AR Stoner 300 Blackout barrel. Sent the suppressor and upper to AAC and they determined that the threads were not concentric. But they fixed it with a new end cap. I cut that barrel in half with a cut off wheel and threw it in the dumpster. Lesson learned on cheap AR barrels.


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Daveh Offline OP
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I’ll be checking the threads, etc before I shoot thru the repaired can.....
As far as the dent, I don’t care....

Shawn- your post makes perfect sense. I would think that any bow in the barrel would be severe (if all else is proper) to cause a strike in 4-5 inches inside the can....But you have way more experience....


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In the last few years almost everyone here has become suppressor crazy, and we have suppressors on almost all of our hunting rifles, last week we sent in 5 more rifles to be cut and threaded, for can's , Please keep this thread going, as we need to be better informed on the problems that can arise. Rio7

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Daveh Offline OP
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Silencerco called me today and where very good. They said they didn’t need the threaded adapter so I removed it and here is what I saw. Sure looks like the first baffle broke loose on previous shot. The rep even mentioned this was a possibility......
See pic...

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What model do you have?

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Daveh Offline OP
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Harvester 300


But as for me and my house we will serve the Lord. Joshua 24:15
I can do all things through Christ who strengthens me. Phil. 4:13

I DON'T NEED A WSM AS I HAVE A WEATHERBY!
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Would you do me a favor and measure the distance from the back end to the first baffle/blast shield.

When they returned mine the first baffle was deeper inset to my eye. I hadn’t measured prior to shipping. When I questioned SiCo about it they said that the old and new were the same but it sure looked different.

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Daveh Offline OP
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Sorry but it’s already enroute to SiCo....I would hazard to guess it was 2-2.5” down.
BTW- it was angled in there......


But as for me and my house we will serve the Lord. Joshua 24:15
I can do all things through Christ who strengthens me. Phil. 4:13

I DON'T NEED A WSM AS I HAVE A WEATHERBY!
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Daveh Offline OP
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I would say mine was deeper than yours as per your pic....


But as for me and my house we will serve the Lord. Joshua 24:15
I can do all things through Christ who strengthens me. Phil. 4:13

I DON'T NEED A WSM AS I HAVE A WEATHERBY!
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A friend showed me his after it was hit by several strikes.

He had shot with a 6.8 and a 22 cat.

It had shot about 30 shots but when he was shooting his 30 TAC is when the fun started.

It looks like the last 2 baffles were hit but the tube was unharmed.

It is a welded type.

We trued it up in the lathe and ran a bot of proper size to see if it would clean up.

Have not heard if it still works.

He figures it had worked loose some when it happened after changing it to 3 rifles.

Learned something that day.

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Any updates yet?

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Daveh Offline OP
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I am calling Monday. ~4 weeks ago they confirmed it arrived and was in the warranty department. They did mention it may take a little longer as the dent repair would require a refinish.


But as for me and my house we will serve the Lord. Joshua 24:15
I can do all things through Christ who strengthens me. Phil. 4:13

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Good to hear they’re taking care of you.

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Dave, to answer the question about checking concentricity without tearing it down, my lathe has a 2" spindle bore and a naked 700 fits through it easily. I have a chuck that is made to be able to dial those in.....so yes it can be done, but not every lathe can do it.

I'd wonder if there got to be enough fouling to give the bullet a yaw situation.


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I would not buy something that runs on any kind of primer given the possibility of primer shortages and even regulations. In fact, why not buy a flintlock? Really. Rocks aren't going away anytime soon.
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I don’t clean like a fanatic but this 300 probably only has 50rds fired total. Probably 10 since last cleaned...


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I can do all things through Christ who strengthens me. Phil. 4:13

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Daveh Offline OP
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Got it back about a week ago. No charge. Still has a dent albeit smaller.
I’m sure I’ll not have anymore issues.

Silencerco is GTG


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I can do all things through Christ who strengthens me. Phil. 4:13

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Thanks for updating. Good to hear regarding them.

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Bullets often tilt, called yaw, about their axis of revolution upon immediately exiting the barrel. Later in flight they come to "rest" spinning perfectly about their axis as they travel. Clearance for bullet yaw should have been a design consideration taken into account by the suppressor manufacturer

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