Thread options for a Tikka Superlite .243

[Erie660]

I have a T3x stainless lite 22-250 threaded 1/2x28 and running a Banish 223 suppressor with direct thread and and it works fine. I recently bought a T3x Superlite .243 w/22” barrel. I bought a Thunderbeast 6.5 Ultra 9 that I want to run on it. I talked to Thunderbeast and they do not recommend 1/2x28 direct thread for this suppressor, they do not think there’s enough shoulder.Why wouldn’t this suppressor work with 1/2x28 threads like my 22-250? I’m looking for options to mount this Ultra 9 on the .243. I see Area 419 has options but I do not know enough about them. Thanks

 

[wpeach1912]

TBAC will usually thread tikkas 1/2-28 themselves and use the CB brake as the mount for the suppressor

 

[spife7980]

I have a T3x stainless lite 22-250 threaded 1/2x28 and running a Banish 223 suppressor with direct thread and and it works fine. I recently bought a T3x Superlite .243 w/22” barrel. I bought a Thunderbeast 6.5 Ultra 9 that I want to run on it. I talked to Thunderbeast and they do not recommend 1/2x28 direct thread for this suppressor, they do not think there’s enough shoulder.Why wouldn’t this suppressor work with 1/2x28 threads like my 22-250? I’m looking for options to mount this Ultra 9 on the .243. I see Area 419 has options but I do not know enough about them. Thanks

Because 24 is bigger than 22.
1/2x28 threads are for 22 cals, if you go bigger youll want to step up to a bigger thread size.

 

[LeftyJason]

Thunderbeast can do a 9/16 cb face mount brake. That's what I had them do on my t3x lite 6.5 creed.

 

[Erie660]

Because 24 is bigger than 22.
1/2x28 threads are for 22 cals, if you go bigger youll want to step up to a bigger thread size.

I realize that the .243 is bigger than. Doesn’t the barrel still have to be threaded 1/2x28? Then they put a brake on to give it more shoulder? I’m pretty green when it comes to suppressors.

 

[Erie660]

Thunderbeast can do a 9/16 cb face mount brake. That's what I had them do on my t3x lite 6.5 creed. View attachment 8567987
View attachment 8567988

How much length and weight does that add compared to direct thread?

 

[spife7980]

I realize that the .243 is bigger than. Doesn’t the barrel still have to be threaded 1/2x28? Then they put a brake on to give it more shoulder? I’m pretty green when it comes to suppressors.

With a bullet larger than 22/5.56 you won’t have adequate material left in the muzzle after it’s threaded. 1/2x28 is alright with the smaller 22 cal bullet.
Most will thread it 5/8x24 but that requires a larger diameter shoulder.
9/16x28 is viable if your barrel is adequately thick, or see the face mount brake seen above (vs shoulder mount which requires thicker material).

1/2” threads means your minor thread diameter(smallest cut away part of a thread) is around .475”. Subtract the bullet diameter and that means there is .475-.243=.232” of material. Divide that by 2 for each side of the barrel and you get .116 of material left on each side. No good. Needs more material, necessitates a larger diameter thread.

 

[LeftyJason]

How much length and weight does that add compared to direct thread?

Absolutely nothing. Your direct thread has a device installed already.

From the Thunderbeast page on the ultra 9.
"With the CB mount, the suppressor mates to a conical shoulder on the brake and locks up rock solid and extremely tight. In direct thread configuration, the ULTRA suppressors use a heat-treated 17-4 thread insert and initial blast shield. The ULTRA series suppressors also have the flexibility to be changed from direct thread to CB mount and vice versa via a simple factory service operation, in case your needs change. This is accomplished by removing or replacing the default brake from the direct thread version."

I would contact Thunderbeast and have them convert and thread for the face mount brake. Threading costs are in line with other companies. They can do it right.

 

[beetroot]

I don't see why there won't be enough shoulder, the superlite barrel is the same contour as a the standard lite, just with added flutes is it not?

Sounds like you are getting mixed messages, as you are right there's no reason you can't do a 1/2x28 on your 243. That being said the barrel should be thick enough to go for a 9/16 thread.

M14x1 and M15x1 are very common threads for Tikkas outside of the US, 9/16" is about 14.3mm so there's no reason it wouldn't work.

 

[LeftyJason]

I don't see why there won't be enough shoulder, the superlite barrel is the same contour as a the standard lite, just with added flutes is it not?

Sounds like you are getting mixed messages, as you are right there's no reason you can't do a 1/2x28 on your 243. That being said the barrel should be thick enough to go for a 9/16 thread.

M14x1 and M15x1 are very common threads for Tikkas outside of the US, 9/16" is about 14.3mm so there's no reason it wouldn't work.

Taken from my lite.

Legend: .dia {distance from muzzle} (barrel length)

.616 {0} (24.33)
.620 {1.358} (23)
.630 {2.57} (21.75)
.640 {3.81} (20.5)
.650 {5.05} (19.25)
.660 {6.27} (18.06)
Recommended od for 9/16 shoulder .662 {6.625} (17.7)
0.673 {8.08} (16.25)Beyond this point has to be registered as an SBR
At front of tupperware 0.711 {13.33} (11)
Recommended od for 5/8 0.725 {15} (9.33)

Recommended od are from Thunderbeast.

Random superlite for comparison. Note where the flutes start and end.

Wall thickness on a 1/2-28 for a 243 looks right at 0.107".

 

[EXSOCAL]

I run into this problem a lot. One option we've used with success is silver soldering a bushing onto the muzzle end and threading that. The muzzle end is turned down just a hair to straighten out the OD and a bushing is turned to match. Really the only "right" way to throw the proper sized threads on a pencil barrel. With a brake threaded on it looks just fine and works great.

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