My new .338 edge silencer

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sirhitalot
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My new .338 edge silencer

Post by sirhitalot » Sun Jun 09, 2013 9:23 am

This is a can for a 338 edge mainly for range use. I have focused on a durable and solid design rather than light weight.
300mm long, 42mm diameter and ca. 1200g.

Baffles of impax steel:
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First baffle is 3mm thick, the rest are 2mm. Angle are 60 degrees from the center axis.

Outer tube of 304L 42mm
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TIG-weld. (not a pro welder)
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Clean up:
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threading on rear, impax steel and M39,7x0,75mm threads :)
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Everything:
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Different thread inserts. (one blank because im not sure what the thread is on the 338 im getting in a couple of weeks. Probably its 5/8"-26 or 5/8"-28, but I only had a 5/8"-26 tap, so I have a blank ready for threading if the threads are different.
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Here its mounted on a Blaser R93 with 6,5x55 or 30-06 sprg.


My first silencer for a high powered rifle... have only made muzzle brakes and 22lr silencers before.

IAC533
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Re: My new .338 edge silencer

Post by IAC533 » Sun Jun 09, 2013 12:31 pm

Looks really great! My two questions though are 1.Why did you use welded seam tube instead of DOM and 2. Why didn't you go with 60 degree cones?
"The only day that doesn't end in "day" is tomorrow"...Sandra Willoughby

sirhitalot
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Re: My new .338 edge silencer

Post by sirhitalot » Sun Jun 09, 2013 1:16 pm

IAC533 wrote:Looks really great! My two questions though are 1.Why did you use welded seam tube instead of DOM and 2. Why didn't you go with 60 degree cones?
1: I went with the tube I had available. Paid nothing for the materials, and I think it'll work ok... The baffles seems to be aligned well.
2: to save material. didnt have that much of the good steel, and i'd rather have more 30 deg baffles than 60 degree cones.
Last edited by sirhitalot on Sun Jun 09, 2013 1:53 pm, edited 1 time in total.

jfk
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Re: My new .338 edge silencer

Post by jfk » Sun Jun 09, 2013 1:48 pm

DOM= drawn over mandrel, seamless

sirhitalot
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Re: My new .338 edge silencer

Post by sirhitalot » Sun Jun 09, 2013 1:55 pm

yea, I just found out :) I didn't want to spend time and money on a tube when I have one that probably will work fine (im a student :wink: )

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Enfield577
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Re: My new .338 edge silencer

Post by Enfield577 » Sun Jun 09, 2013 2:54 pm

Looks like a good job - well done

You must tell us how is sounds, when you get to try it
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IAC533
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Re: My new .338 edge silencer

Post by IAC533 » Sun Jun 09, 2013 8:29 pm

Your machining looks very nice.
"The only day that doesn't end in "day" is tomorrow"...Sandra Willoughby

joe0121
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Re: My new .338 edge silencer

Post by joe0121 » Sun Jun 09, 2013 9:11 pm

Looks nice. My .338 is getting built now. Cool little (big) cartridge. Makes a .308 look like a .22 LR

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delta9mda
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Re: My new .338 edge silencer

Post by delta9mda » Mon Jun 10, 2013 12:44 am

looks good but performance will not be as great as with 60 degree cones. just saying
NP

sirhitalot
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Re: My new .338 edge silencer

Post by sirhitalot » Mon Jun 17, 2013 4:33 pm

thanks guys, i'll post a video when ive got to try it.
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a 300gr scenar next to a 223 8)

@delta9mda, I know that 60 deg is optimal, but i believe that if you have a certain amount of material, many more blunt baffles might be more efficient than few sharp ones, just a guess...

Historian
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Re: My new .338 edge silencer

Post by Historian » Mon Jun 17, 2013 4:53 pm

Welcome.

Excellent machining.

Thank you for showing.


Best.

joe0121
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Re: My new .338 edge silencer

Post by joe0121 » Tue Jun 18, 2013 4:13 pm

sirhitalot wrote:thanks guys, i'll post a video when ive got to try it.
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a 300gr scenar next to a 223 8)

@delta9mda, I know that 60 deg is optimal, but i believe that if you have a certain amount of material, many more blunt baffles might be more efficient than few sharp ones, just a guess...
.308 on left, 300 WM center 338 edge right. Makes a big boom :)

Image

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ghostdog662
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Re: My new .338 edge silencer

Post by ghostdog662 » Wed Jun 19, 2013 12:59 am

sirhitalot wrote:
IAC533 wrote:Looks really great! My two questions though are 1.Why did you use welded seam tube instead of DOM and 2. Why didn't you go with 60 degree cones?
1: I went with the tube I had available. Paid nothing for the materials, and I think it'll work ok... The baffles seems to be aligned well.
2: to save material. didnt have that much of the good steel, and i'd rather have more 30 deg baffles than 60 degree cones.
Great work man, that machining is top notch.

Happy hunting.
LP

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JacksonBrowne
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Re: My new .338 edge silencer

Post by JacksonBrowne » Wed Jun 26, 2013 9:00 pm

Great job
07/02 SOT

sirhitalot
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Re: My new .338 edge silencer

Post by sirhitalot » Sat Jun 29, 2013 6:35 am

based on the measurements of the previous owner i thought the threads were 5/8"-26 tpi, but it was 5/8"-24 UNEF tpi :?
Therefore i will have to thread up the silencer inner thread insert blank to this thread before im able to test it. It does however go on a couple of turns so i can take some pictures for you :wink:
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Rem 700, fully blueprinted, mcmillan and border barrel. Whyatts extended box mag (COL up to 100mm).
Last edited by sirhitalot on Sun Aug 11, 2013 4:37 pm, edited 1 time in total.

greenhornet-1
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Re: My new .338 edge silencer

Post by greenhornet-1 » Sun Jun 30, 2013 11:53 pm

WOW, That thing looks great!!

sirhitalot
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Re: My new .338 edge silencer

Post by sirhitalot » Tue Aug 20, 2013 11:13 am

thanks!
Its finally done with the correct threads. I also have made an internal muzzle brake to stop the gasses more efficiently:
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Will probably be able to test it tomorrow. Will post video then.

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twodollarbill
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Re: My new .338 edge silencer

Post by twodollarbill » Tue Aug 20, 2013 7:28 pm

Sweet!!! design on your break and placement.
Your plan is for it to act like a diffusser with-in the blast chamber...interesting design.
I would spot weld it in place so that it doesn't unscrew forward and
start rattling around inside :shock:

Historian
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Re: My new .338 edge silencer

Post by Historian » Tue Aug 20, 2013 8:22 pm

Outstanding, Sirhitalot. You have earned the Cellini Metal Master
Award for execution and a round of cheers for a powerful
and satisfying picture essay.

Inspiring.

Your talent and experience is easily inferred.

Thank you.

sirhitalot
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Re: My new .338 edge silencer

Post by sirhitalot » Sun Aug 25, 2013 12:54 pm

Thanks for the kind words!
Ive put together a short movie most of which is the pictures you've already seen, but at the end there are a couple of clips of me shooting it.
First clip a friend is using it with the defensive edge brake (note his lack of bipod pressure lets the rifle hop)
(and pardon the slight douchy music :lol: watching pictures without any music tends to get lame)

http://www.youtube.com/watch?v=28sv8bqKml8



Im very pleased with the results although i havent tested the accuracy yet. The recoil is a tiny bit more noticeable, but the shooting experience is generally better. I burn 94gr of N570 powering the 300gr scenars at 880m/s, so the silencer has a tough life ahead. I think it'll hold up great.

Here's another clip from this summer (with muzzle brake) where i shoot it at 950 ish meter / 1040 yards.
http://www.youtube.com/watch?v=Ks62JnlAGW0

sirhitalot
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Re: My new .338 edge silencer

Post by sirhitalot » Thu Aug 29, 2013 1:26 pm

thinking of slicing off a bit on the outer tube. What do you guys suggest as wall thickness? Im burning almost 100gr slow burning powder in this bad boy...
Im thinking of 2mm thick at the blast chamber and 1,5mm at the rest? What kind of pressures or loads do you use if you'd do FEM analysis? I was thinking of using quickload muzzle pressure. it will drop very fast, but the pressure buildup is also very quick.

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WhisperFan
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Re: My new .338 edge silencer

Post by WhisperFan » Thu Aug 29, 2013 6:32 pm

Your threading looks very nice, why did you decide to weld one end and thread the other?

I'm just thinking that with one fixed end, it will be nearly impossible to get the baffles and spacers out after being shot for a while.
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Hard_ware
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Re: My new .338 edge silencer

Post by Hard_ware » Thu Aug 29, 2013 8:15 pm

Very nice!
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sirhitalot
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Re: My new .338 edge silencer

Post by sirhitalot » Sat Sep 28, 2013 5:52 am

WhisperFan wrote:Your threading looks very nice, why did you decide to weld one end and thread the other?
Thank you.
Yes, one end is welded to save time. I dont care that much if i cant get it apart, because the pressure and flow is so high that i doubt there will be much buildup. I have taken it apart once, and it needed a couple of knocks with a plastic hammer to come lose. If there is a problem i can always cut of the front and thread it up...

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doubloon
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Re: My new .338 edge silencer

Post by doubloon » Sat Sep 28, 2013 8:37 am

Cones not stepped ... bender is proud.
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