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-   -   Does rain affect ballistic? (http://www.socnet.com/showthread.php?t=130628)

Armageddon 31 August 2017 11:19

Does rain affect ballistic?
 
I searched a few shooting/weapon forums, but only got everything and its opposite:confused:
Couldn't find a definite/proper answer...
So as always I come back to the place where I TRUST people;)
I know that humidity can affect your POI but all in all, does rain really affect your bullet? (5.56 or .308)

gavin 31 August 2017 11:53

Quote:

Originally Posted by Armageddon (Post 1058668891)
I searched a few shooting/weapon forums, but only got everything and its opposite:confused:
Couldn't find a definite/proper answer...
So as always I come back to the place where I TRUST people;)
I know that humidity can affect your POI but all in all, does rain really affect your bullet? (5.56 or .308)

Folks will differ on the answer. My experience has taught me that rain will have minimal effect on a stable bullet in flight. Anything other than still, dry air can have an effect on an unstable projectile in flight.

Gumby2/6 31 August 2017 13:50

Long story short.. no, rain does not affect.

Sent from my Holiday Express room.

Gray Rhyno 31 August 2017 15:11

Rain can and often does effect the shooter. Just sayin'...

Sharky 31 August 2017 15:30

As Gavin noted....everything has SOME effect. I have never seen any NOTICEABLE effect from rain any different from humidity. Like everything, small effects grow larger just like a minute of angle. The further the range, the greater the effect.

My understanding of why rain doesn't have much effect is similar to why the hollow point of an SMK, and the differences in that hollow point from one round to the next doesn't have an effect.

B 2/75 31 August 2017 15:52

Rain does have some affect, as does the Coriolis Effect, wind, temperature, humidity, and myriad other conditions.

But, the degree to which the projectile is actually affected depends on the "strength" if you will, of the input. Wind has a large effect, as does temperature and to a lesser degree, humidity. Rain's effect on a bullet is, generally speaking, small enough that the vast majority of shooters can't tell any difference. What these less experienced shooters will note, however, and will often attribute to the rain, is the change in bullet placement on the target that is actually the result of factors that have a greater effect on the bullet: increased humidity, decreased temp, generally dimmer light, and possibly increased wind.

Shooting in the rain isn't so much fun, but it does go a great amount of good in concealing a sniper's position when shooting. Practice, practice, practice.

Armageddon 1 September 2017 03:18

Thanks Gentlemen, that's exactly what I wanted to know!!

Gumby2/6 1 September 2017 06:35

I should have clarified, rain will have no noticable effect on the ballistics of the round, for most shooters' application.

Gsniper 1 September 2017 07:01

I've shot in some fairly heavy rain with good success. When it really starts raining hard you can't see far enough to make shots long enough to really have an adjustable effect. So in short, if you can see it, you can hit it without much change. At extreme long range it may be enough of an effect to be noticeable, but you can't see that far in the rain anyway, so it's sort of a moot point.

Sharky 1 September 2017 07:07

Quote:

Originally Posted by Gsniper (Post 1058669079)
I've shot in some fairly heavy rain with good success. When it really starts raining hard you can't see far enough to make shots long enough to really have an adjustable effect. So in short, if you can see it, you can hit it without much change. At extreme long range it may be enough of an effect to be noticeable, but you can't see that far in the rain anyway, so it's sort of a moot point.

Truth.

Armageddon 1 September 2017 09:33

Quote:

Originally Posted by Gsniper (Post 1058669079)
So in short, if you can see it, you can hit it without much change

That sums it up.

Gooch 1 September 2017 21:22

I shot in a down pour in the canadian forces matches in Ottawa once. I think Boatwreck was my partner. Notes of note....

1. Water got all over the objective lenses. We were using an M3A with its sunshade and had minimal effect on visibility. However the rest of the guys were using Unertls with no sun shade and couldnt see shit.

2. When you are looking through optics in the rain, you are taking ALL the rain between you and the target and cramming it onto ONE focal plane so its hard to see. Back off on magnification if you can. (Makes reading wind real easy though).

3. Ballistics wise the air dam effect and sonic wave is acting like a force field keeping the water off of the projectile so its not like shooting through a wall of water.

4. Its a cool visual watching trace through the spotting scope as the shock wave is exploding rain as it tears down range.

5. That was the same instance they had a tornado near the range and never sounded the alarm...

Fun times..

Gsniper 1 September 2017 21:25

Good thing you didn't have to refer to the tornado wind chart I know you had a reduced scale copy of on your watch data book.

Ran into an old Piso of yours on a job last week. Tom Bullins.

Gooch 1 September 2017 21:27

Bullins?? Cool. Whats he up to?

Gsniper 1 September 2017 21:30

Gun-whoring around like me. I'm too lazy to go get a real job.

Gooch 1 September 2017 21:33

Once I get my ticker back to normal I would like to become a whore again.

maim 1 September 2017 23:06

Competed in a couple of sniper tournaments in Djibouti during the '80's only using that stoopid 7.5 mm round. 750 m head shots, simulated, didn't matter if it rained or not, always scheduled over the day every year it rained.

John Simpson 3 September 2017 13:14

I wrote this last year. https://mdttac.com/content/the-four-...ked-eventually

Check out question #4

Lou Steel 25 September 2017 00:47

Rainy day blues
 
FWIW, I had a good friend who died about ten years ago. He was an avid shooter and bench rest competitor. He was a friend of Walt Berger of Berger Bullets. I asked him about the rain and it's effects on target. He said in his testing that it was a non-issue but said if you get "even a small amount" of water in the bore that it will throw a shot out of the group. I always remembered that but never tested it for myself, and I can't remember how he conducted his tests. Maybe someone can verify?


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