Suppressors Thunderbeast suppressor on Savage 10BA Stealth

[BuckeyesCL2004]

I've got a Savage 10BA Stealth in 6.5 Creedmoor. It has a 5/8 x 24 threaded muzzle. I shot at a long range school a while back and the instructor was going to rent me a suppressor. However the suppressor didn't go on all the way. There was like a thread or a gap (hard to explain). So we ended up not shooting it like that. I called Savage and they have never heard of anything like that and said I could send it in to them (3 week turn-around). Actually the guy I talked to didn't seem like he really knew a whole lot.

Question is, has anyone else run across anything like this? I'm wondering if it's just a Savage thing and I just have to suck it up and accept it or if it's really a defect and worth sending in.

 

[PD DUMPER]

Send them the specs off the TBAC web site. Have it done right.

 

[BuckeyesCL2004]

Send them the specs off the TBAC web site. Have it done right.

Yeah I did contact TBAC and the guy there sent me a link to the specs. So I will certainly include them if I send it off.

And for the record when I said "accept it" above, I meant accept I can't run a suppressor. Wouldn't shoot it with a suppressor that didn't fit right.

 

[Huskydriver]

Got a pic of the muzzle threads from perpendicular to the barrel?

 

[Kadams1563]

Take barrel off and get it threaded by someone that actually knows what they are doing.

 

[Zak Smith]

Might be an easy fix. Might need to be rethreaded. Just depends.

 

[BuckeyesCL2004]

Got a pic of the muzzle threads from perpendicular to the barrel?

No because that would have made too much sense.

I guess I'm just gonna break down and send my rifle off to Savage. Ugh, 3 weeks.

 

[SDet]

No because that would have made too much sense.

I guess I'm just gonna break down and send my rifle off to Savage. Ugh, 3 weeks.

Just spin the brake off and take a picture. It might be within savages spec, but that doesn't mean it's proper for mounting a suppressor. No reason to send it off, if they won't fix it.

 

[loveha]

May be quicker to find a gun smith local.

 

[PD DUMPER]

A "qualified" Smith could do it for you. Been burnt by some who think they know what they are doing.

 

[Rod79]

I run a SiCo hybrid on my 10BA, direct thread mount and it tightens snug to the thread shoulder no problems. If you have a break that mounts just fine then it’s not the savage barrel threads, right?
Maybe it’s the TBAC direct thread adapter issue, do you have the option to try another suppressor?

 

[Zak Smith]

We once had a gunsmith insist that his threads were Ok because the A2 flash hider that had been knocking around his toolbox for a decade would screw on. Doesn’t really work like that

 

[BuckeyesCL2004]

I know this thread has been sitting idle for a while, but just an update. I ended up putting on a SureFire 7.62mm muzzle brake. It installed just fine with the timing shims. Been shooting it for a while now and it works great. They make a matching supressor that mounts to the brake and I might just get one of them (for other reasons) and not worry about getting a dedicated supressor for this rifle.

 

[Zak Smith]

Probably didn’t have a relief cut.

 

[dustingaunder]

Do your mounts not have a relief cut in them? There are a lot of 5/8-24 rifles in the wild with no relief behind the threads.

 

[Zak Smith]

They do.

The spec sill specifies a relief cut.

Maybe it was something else but most of the time there's a little daylight that's the reason though.

 

[dustingaunder]

TBAC’s spec does, but AAC’s never has. I’ve seen 100:1 5/8 threads without a relief vs with.

I’ve always wondered why your spec calls for the relief groove? Any reason in particular?

I prefer no relief when using shims to time muzzle brakes. They want to sag into the relief and looks off if you don’t hold them concentric when you tighten the MB.

 

[Geno C.]

I don’t do t for a living but 9 times out of 10, it’s the lack of relief cut

 

[BuckeyesCL2004]

I find it hard to believe it's an incompatibility with the spec. I can't possibly be the first person to try a TBAC supressor on this type of Savage rifle. It sure would be nice to know if Savage just screwed up or if there really is a compatibility problem, or maybe that supressor was bad. If I could run out and pick up another one off the shelf and give it try I sure would, but well, you know how that goes.

 

[PD DUMPER]

Mabey, You could run out and try it on a different SAVAGE

If I could run out and pick up another one off the shelf and give it try I sure would, but well, you know how that goes.

 

[Zak Smith]

Without putting a thread gauge or mic on the threads and inspecting them, or even just seeing a side-on photo, it's impossible to tell.

 

[Geno C.]

Picture of the threads is going to show, no relief cut.

 

[BuckeyesCL2004]

Mabey, You could run out and try it on a different SAVAGE

As said in the original post I was borrowing the supressor. If I had it then there wouldn't be any issue I could take it all to a gun shop and say hey tell me who screwed up.

 

[Geno C.]

Why won’t you post pics of the threads? @Huskydriver and I have asked. You asked for a little help, and all we need is a little more info to help either to show you the problem or rule something out as being the problem

 

[BuckeyesCL2004]

I seen a statement above, wasn't aware that was a question from you. Seems more like you were saying what a picture would show. I also answered Huskydriver as well. I didn't take a picture at the time. I could take a picture of the muzzle and threads *without* the supressor but would that really show enough detail? I don't want to take my brake off but can if it would really help.

 

[Geno C.]

Yeah a picture of the threads on the rifle is what we want to see. The threads on the tbac are most likely correct

 

[BuckeyesCL2004]

Let's see if these can help. I tried to get a few different angles.

 

[loveha]

A side on picture world be best. Can't tell much from the angles given.

 

[Geno C.]

A side on picture world be best. Can't tell much from the angles given.

I’m pretty sure I can tell from the picture, that where the threads meet the shoulder of the barrel, there is no relief cut. That is why it won’t screw on all the way. Mystery solved?

 

[spife7980]

This is the releif cut that he is mentioning, I agree

(And a pro tip, dont put what you are trying to show a picture of in the shadows)

 

[BuckeyesCL2004]

(And a pro tip, dont put what you are trying to show a picture of in the shadows)

Wasn't sure what I was supposed to be showing I guess. Here are some side views.

Short video trying to show the threads

Regardless I would think the rifle lacking the relief cut would have the opposite impact in that the barrel threads would be too short. So the supressor could go all the way on. On the other hand if the supressor didn't have the relief cut it would be too short and that's why there was a slight gap between the supressor and the shoulder. So maybe it's the supressor that's the problem?

Note I never seen the supressor in question actually run on a gun. Perhaps it was damaged in some way?

 

[Geno C.]

The threads on the suppressor are hitting the metal of the barrel that is in the way. The relief cut is there for a reason. When single point threading, it give you a place to stop the top without hitting the shoulder. It’s really a good thing. However, threading with a die, you don’t get that . The threading inside the suppressor go all the way to the end of the can.

 

[spife7980]

The first thread closest to the shoulder looks buggered, its more of a wave look vs a triangle.

Should be

Looks more

Could be an optical illusion but this first one vs all the others plus not much if any relief/undercut.

 

[Geno C.]

This is where your problem is

 

[BuckeyesCL2004]

This is where your problem is

So I don't really have that "flat" sort of area there? It should look like \__/ but instead looks like \/ ? So does this mean this is a mistake on Savage's part and if I do send it in they can fix it. Or is this likely just a design and TBAC supressors can't go on Savage rifles like this one? If it were the later I would think it would be a well known issue at this point.

When you say single point threading you mean like something cutting it while the barrel spins, like a lathe vs the barrel staying put and something turning around it (die)? I wonder if I could find a machinist locally who could cut a relief for me, now that I can at least explain what the problem is.

Then again maybe it's just time to let this rifle go and step up into a custom job.

 

[Geno C.]

You don’t have to have the whole thing retreaded. Just chuck it up and cut the relief and run it?

 

[Zak Smith]

It can be fixed and the shoulder checked really easily in a CNC lathe.