Video of Riflescope Flexing???

[Eaglet]

Is this suppose to be like this or is there something wrong with this setup?

YouTube - high-speed video of scope and barrel flexing on a 50BMG

 

[ICANHITHIMMAN]

I have no idea

Thats nuts but it has to be the design or maybe not......

 

[soren]

I don't know, it looks like the base is not secured at the back end. I wouldn't think a scope would flex to the point of being visable.

 

[30-338]

Incredible Video!!

Wow, Eaglet...That is an amazing video.Wonder what shoulder bones and neck bones look like under that kind of recoil.30-338

 

[Coues Sniper]

Doesn't seem right.

I agree soren, the rear does not look fully secure.

 

[WildcatB]

Not only that but....

The rifle get's floppy too. See animation here:
FEA Barrel Pressure Analysis on a 6PPC Rifle Barrel

Keep in mind that this movement is amplified 1000x. Because of this exaggeration, his scope is shown hitting the barrel... but looking at the video of the riflescope flexing, this guy's animation seems to be very accurate.

 

[jwp475]

Oh it's right. That video shows the massive amount of stress that is impacted on the scope and mounting system when a 50 BMG is fired

 

[Coues Sniper]

The rifle get's floppy too. See animation here:
FEA Barrel Pressure Analysis on a 6PPC Rifle Barrel

Keep in mind that this movement is amplified 1000x. Because of this exaggeration, his scope is shown hitting the barrel... but looking at the video of the riflescope flexing, this guy's animation seems to be very accurate.

Oh it's right. That video shows the massive amount of stress that is impacted on the scope and mounting system when a 50 BMG is fired

That's incredible. You could have won a lot of money off me on that bet.

 

[kcebcj]

Wow!! Wonder how a 338 Lapua or the likes with good mounts would look like filmed the same way. A couple loose screws anywhere would not be good.

 

[James Jones]

That certainly is a cool video , from the few 50's I've shot the recoild wasen't any worse than a 12ga shotgun and only oone was that bad the rest kicked about like a 30-06 maybe a bit more of a push , that gun appears to have some pretty substancial recoil.

What actualy causes the scopes on 50's to fail is called "dual stage recoil" , the gun starts in motion rearward and as the bullet comes clear of the muzzel and the massize brake takes effect it stops most of the rearward travel and in some cases drages the gun back forward.. The scopeis generaly only insulated against recoil from one direction and this two way effect wrecks them

I have killed more scope with a RWS model 48 pellet rifle than I've ever heard of on ANY other gun , this is also due to the dual stage recoil , one in the rear direction and again in the opposite direction when the spring slamms home , it'll beat the guts out of some of the best .

 

[Ksmirk]

Wanna see something real crazy look at a slow motion vid of someone shooting a bow! the arrow does some really funky things along with the bow, the arrow goes from looking really straight to looking more like well a shoestring in the wind. Later,

Kirk

 

[leatherman92]

thats a cool video thanks for postinggun)

 

[J E Custom]

The main reason for the flexing is that the rail type base is not
mounted properly. (notice how it raises up in back).

The next thing thats wrong is the rings are to close together,for
a very large objective lense that is very heavy.

And yes that much flexing cant be good for the scope.

Great video of real world problems.
J E CUSTOM