wind flag visual chart

Careful-

dmoran65 said:
Normal deflection patterns of an object are wrong to characterizing a bullet in flight.
One needs to put in account a bullets forward travel, pitch, and spin.
Also taking into account the drag forces on a bullet steer the rear of a bullet (not the nose).

Happy Shooting
Donovan Moran
Click to expand...

We are trying to attract new shooters to benchrest-not scare them away.

Don't start with these types of threads until you have them hooked! ;)

-MP
 
About that...

Before we get into "heretical wind theories," here is a good article on crosswind ballistics:

http://www.exteriorballistics.com/ebexplained/articles/article2.pdf

Some people seem to think that their personal theories of fluid and particle dynamics somehow trump the observations and calculations of hundreds of thousands of shooters...

Listening to unqualified people talk about physics is as embarrassing and ridiculous as middle-school boys talking about sex.

-Dave
 
Dave B said:
Maybe you could make us a chart for the downdrafts etc. that the present chart does not address. Heck, first we need to invent a wind flag that will show the downdrafts and other invisable conditions.
My head is starting to ache.... I think I'll just continue to close my eyes before I fire and wish the bullets in.
Click to expand...

Dave,
I have been thinking of a windflag design to show downdrafts for some time now but there are some problems to work out. But if I can make it function, I think it would help us tremedously. Or it might just confuse the crap out of both of us!!

As for a chart to show downdraft predictions, I think the best chart is the sighter target!
 
dmoran65 said:
Normal deflection patterns of an object are wrong to characterizing a bullet in flight.
One needs to put in account a bullets forward travel, pitch, and spin.
Also taking into account the drag forces on a bullet steer the rear of a bullet (not the nose).

Happy Shooting
Donovan Moran
Click to expand...

The charts being used by some br shooters were and are formulated for gyroscopic projectiles by the accompanying physics for those problems and therefore are relevant to bullets. However, this is ONLY under IDEAL conditions with parallel, single vector wind angles in one dimension. As I said before, we DON'T always get to shoot in IDEAL conditions on a flat landscape.
But that is what the sighter target is for. How many thousand times have you had a strong 3 o'clock wind blow the bullet straight left without the vertical increase you might expect from looking at a chart? You might think the physics and math didn't work on that shot. But it did. There was just another downdraft angle vectored into the wind angle that prevented the shot from going up a bit as it should. And all the while, it was invisible to you because your windflags won't register downdrafts! BUT THE SIGHTER WILL!!!
 
I couldn't agree more. If you expect "laboratory results" in a non-controlled environment, you are in for quite a surprise! But helping a newer shooter understand what "ideal" wind conditions do opens the door for them to understand the funkier aspects of wind.

Given the choice between this chart and a few holes in the sighter, though....it's a no-brainer. Maybe I should have put a FOR PRACTICE ONLY warning on those files. ;)
 
Thanks

Thanks hailey and essential tremor you sent the chart that I was looking for. I appreciate all the help from the others also I have copied a lot of it for reading and studing. Seems there is a lot of information on reading wind flags.
Thanks again for all the help.
djohns
columbia,tn
 
gene beggs wind probe

Does anyone know where I can get a wind probe like the one Gene Beggs makes. I have tried to email him but the email address I have keeps sending it back to me undelivered. Would like to buy one or get some drawings to make one myself, but prefer to buy one already made.
 
djohns said:
Does anyone know where I can get a wind probe like the one Gene Beggs makes. I have tried to email him but the email address I have keeps sending it back to me undelivered. Would like to buy one or get some drawings to make one myself, but prefer to buy one already made.
Click to expand...

My e-mail address is, genebeggs@cableone.net

Cell Phone: 432-631-5124

Thanks,

Gene Beggs
 
Gene thanks for the quick reply, really glad to hear that you do make them for sale. Look forward to doing business with you.
Danny
 
I've found the best ...

wind chart to be the sighter target. It gives real time evidence of what to expect. Art
 
Wind charts are based on physics

They offer a real good general idea of where the bullet will be blown. Truth is, competitive benchrest requires a more specific knowledge at a very specific moment in time. Physics would work just fine in this application if you had all the data and some supercondictors to do the math but you don't. As it turns out, every competitor on the line has the equipment to instantly evaluate the current condition. Take a sighter shot!!!!
 
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