Thread: My new 3D printed 338LM can

Originally Posted by BRADS

Possibly if you choose to not where earmuffs.


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Definitely not if you're as colossally stupid as you'd have to be to shoot a braked rifle with no earmuffs...

.338LM + a brake that increases noise on a level similar to APA brake which it strongly resembles + earmuffs = probably 10db or 2x perceived loudness louder, or more, compared to ODLs .338LM + can with no earmuffs figures, & probably still quite a lot higher noise level than 140db "impulse" "hearing safe" level

However

Just got it , weighs in at 265.39 gms , pics later

Originally Posted by Mauser308

Yeah, as I said - if it can be done in a straight thread-on and not a 'BS seperate muzzle break to have to fit' type... (which is just something else to get covereed in crap, loose, damaged, corroded blah blah).

When I did a load development on an AI AX 338 LM a while ago I was quite surprised by the carbon build up in the brake with the suppressor fitted.

Stands to reason I guess as the brake is a trap the gas has no where to go, unlike an unenclosed brake.

I struck the same thing years ago when playing with blast shields around my brakes, interesting fail that endeavour.....

Bert the designer of the cans , quite likes the AI Tac brake , as it has a taper to the design , and he feels it is very good at aligning the suppressor , I like the fact that the 1st 2 , defacto baffles are high grade steel , when the can is over them .

Anyway , I just had to get out today and shot the thing , even it was only a few quick shots , hopefully , if the weather holds , I can get out and shoot it some more .
At this stage , I am loving it .

*formerly

Thanks for bringing your rifle out to test Chris! What a picture perfect day!

Here is a vid of the muzzle vents. I tried something new with the muzzle vents in an attempt to reduce some recoil in a small way and to keep flash minimized. It is definitely working.

https://www.facebook.com/55772351772...nch_main_video

Any chance of an over barell type style suppressor for a normal hunting rifle? @ODL

Yes, I have been thinking about a variety of ways to make a hunting can. Chris and I discussed this issue. When I do, it will be have some from of stabilization over the barrel. It will be further forward than some want.

Originally Posted by ODL

Yes, I have been thinking about a variety of ways to make a hunting can. Chris and I discussed this issue. When I do, it will be have some from of stabilization over the barrel. It will be further forward than some want.

Forward by how much? What would be the over all length?

Here's a pic of it in action


A pleasure as always Bert .

Originally Posted by tikka

Forward by how much? What would be the over all length?

OAL will probably be around 190 - 200mm with a minimal mount over the barrel. OD will be around 38mm. Maybe 150 - 165 forward. This will be a hunting can with an expected life of around 2k rounds low rate of fire. It will be mostly sealed. Centrefire 3006 and lower.

The magnum cans are the next thing out with ten 338 cans in stock on friday. More variety and different brakes will be available in a month or so. Magnum will be titanium over a SS or titanium brake.




Here is a youtube of the above video for those who don't like stasi book.

https://www.youtube.com/watch?v=iFSp8GUvAGA

Originally Posted by ODL

Here is a youtube of the above video for those who don't like stasi book.

https://www.youtube.com/watch?v=iFSp8GUvAGA

Have you tested them with a decent load behind a 300 grain projectile ?

2828 fps is pretty slow for 250s....

@ODL

Bert, can you please tell me the expected life of the 556 DA Ti6Al4V Grade 5 can please?

Originally Posted by Kiwi Greg

Have you tested them with a decent load behind a 300 grain projectile ?

2828 fps is pretty slow for 250s....

The other chrony was averaging 52 fps faster but I didn't have all the shot data on that chrony. It is factory ammo made by Laupua. I would be happy to run whatever you want to run through it. The numbers are what they are. You measure and accurately record the data whether it is the desired numbers or not.

Originally Posted by dogmatix

@ODL

Bert, can you please tell me the expected life of the 556 DA Ti6Al4V Grade 5 can please?

The group using these have had them in service for about 2 years now. The life depends on the rate of fire. A lot of FA fire will reduce their life and that of the barrel considerably. Currently they are getting used mostly in semi and burst mode on 10.5 entry guns which should last around 6 to 8k. A lot of FA dumps would shorten it to 3 or 4k. semi only would last 8 to 12k.

Our oldest cans ( the original 556) prior to heat treating are coming up to 9k 556 and 3k of rimfire. This can had some very fast semi auto dumps through it. The current cans are heat treated and have a harder surface finish.