high speed camera, underwater plinking

[Grizz]

http://www.youtube.com/watch?v=cp5gdUHFGIQ

fun and good info. the bubble that the bullet runs in, and the shockwave in the photo, form the basis of the explanation for the penetration performance of wide flat meplat ammo at reduced velocities. it is thought that as velocity increases the bullet can outrun the shockwave in the substance it is cruising in, and that slows it down.

I have seen the same thought applied to spitzer shaped projectiles, the russians rumored to have a supersonic torpedo.

anywhoo, the video has entertainment value.

is it my eysight playing tricks on me, or does the barrel deflect downward just before the bullet exits?

Grizz

[7.62 Precision]

AK receivers flex a bunch and barrels too. The barrel usually does dip before and after the bullet exits on an AK. It is amazing how whippy some rifles can be and still hit a target.

[Gobblerforge]

It does flex down. Cool. I would think water in the barrel would "plug" it and cause a barrel failure. Why didn't it I wonder?
Gobbler

[M. M. Wright]

Show this video to your school kids. It goes a long way to explain why they need to learn math and physics and how much fun they can be.