The brake that I bought on the eBay from 'ronhart' went airborne today on the second shot. The screws snapped and I lost the part that holds it by the front sight post. Glad it ended up not in my right eye, could have been worse...
'No gunsmithing' Mosin/Nagant muzzle brake flies down the range
- Thread starter svt-40
- Start date
No, but I expected many more cases like that and lots of negative feedback of that ebay seller I bought this from. He has all positive (people must be using his brakes for sinkers???). I thought I was dumb and mounted it wrong so it met with a bullet but it has no marks. Was blown away by the gases.
- Location
- WMU248 near Edmonton
I'm no expert but just looking at it I can see that there is not a lot of strenght there.
Now if I was making them I would have a longer piece behind the site like the nagant bayonets
Now if I was making them I would have a longer piece behind the site like the nagant bayonets
You can still get the twist-on brake, one that twists on and fixed by the front sight post with a tooth, than you tighten a bolt and it stays on. I heard from reliable sources that they work. This one I got without any good references beforehand.
Well, from the pictures you posted of the brake, it appears that the small cap screws broke from fatigue, not from one large overload blow. The fracture surface appears to be smooth and I can see ratchet marks indicating cyclic overload. I would agree with your first comment, this clamp on design is too small for the repeated load. This also tells me that while the brake was on the rifle it was diverting energy rearward and effectively reducing recoil. So the brake seems to work, but the mount does not.
Edit: Now that I blew up the pics even more to have a look, there is definite beachmarks in the fracture faces, classic fatigue... give the guy a bad rating, the mounting is junk.
Edit: Now that I blew up the pics even more to have a look, there is definite beachmarks in the fracture faces, classic fatigue... give the guy a bad rating, the mounting is junk.
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- Location
- Surrey, BC
Wow!! I haven't heard metallurgy/material engineering lingo like that from anyone in a long time!! Where'd that come from Holleyman?
I agree 100% with everything Holleyman said, you can tell by the surface condition of the fractures that they broke over a period of time from fatigue, not from a single shock loading. It's a bad design, and the screws simply aren't big enough. Too bad, $$$ down the drain
I agree 100% with everything Holleyman said, you can tell by the surface condition of the fractures that they broke over a period of time from fatigue, not from a single shock loading. It's a bad design, and the screws simply aren't big enough. Too bad, $$$ down the drain
