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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/03/2007 at 11:09
Dale Clifford View Drop Down
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http://www.youtube.com/watch?v=s5pVya7eask
wonder what the fundamental frequency is?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/03/2007 at 12:12
tahqua View Drop Down
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 That is an outstanding video. That S&B sure takes a beating. The objective and ocular lense housings really move, yet the main tube between the rings is relatively rigid.

 I'm still not going to catch that SVD S&B virus, though. Way too expensive right now.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/03/2007 at 15:01
Dale Clifford View Drop Down
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watch the back of the scope base lift off the receiver.!!!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/03/2007 at 15:39
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Neat video, Mr. Dale.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/03/2007 at 16:04
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WOW, somebody put some epoxy between that base and receiver!

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/03/2007 at 19:07
tahqua View Drop Down
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Originally posted by Dale Clifford Dale Clifford wrote:

watch the back of the scope base lift off the receiver.!!!

Is that an aluminum Base?

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/04/2007 at 22:22
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Interesting video.  However, if you watched videos from much less powerful rifles, you would probably see the same effect, but on a much less grand scale.  Gradations of flex is common in rifle scopes and accuracy is not usually affected, unless the erector assembly is affected and point of zero is therefore affected.  Of course the fundamental frequency of resonance would depend on the length of the scope, hinge points, energy of recoil, stiffness of the scope tube, mounting set-up (especially as how the scope is mounted and how energy is transferred) , etc.  Fortunately, the usual dampening of scope mounting, prevents excessive resonance to occur, affecting accuracy.  Nevertheless, interesting video.
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