How Much Does Rain Affect Trajectory?

[clunker]

I'm sure this is supposed to be common knowledge, but I have seen conflicting information online . . . yes . . . on the infallible internet. Since I am moving to a place where the skies are gray with drizzling rain for 9 consecutive months, I want to know how to adjust my shooting if necessary for light drizzle to heavy rain. Any thoughts?

 

[Warren Dean]

Get out there and see for yourself first hand. I never see much difference and have shot some of my best scores in rain. Norm Harrold shot his stellar national record at 1,000 yards in the rain at Raton. Don't over-think it.

 

[dogdude]

At W-Port, the rain Usually leads too the wind calming down, which is a good thing...

 

[Warren Dean]

^^^^^^^^^

What he said!!

 

[savagedasher]

Normally does away with many of conditions

 

[ngb1787]

Rain makes bullet faster, tighter groups.

 

[Immike]

The biggest benefit is that the mirage isn’t pulling your tail.

 

[gambleone]

I've read where supersonic shockwave prevents bullet from touching raindrops, so not to
affect trajectory. Hope some others can chime in with their knowledge.

 

[sawcarver]

Keep your ammo and barrel dry otherwise you can make pressure really quick.

My daughter and got caught in a down pour after our sighters. I shot and had a very hard bolt lift, got the bolt open and the primer fell out. Looked over to my daughter to have her dry her ammo before shooting and she showed me her primer fell out of her 223 case too!

 

[22DASHER]

Dusty blamed a 600 yard flyer on a drop of rain last year.... I think some people actually believed it!

 

[Warren Dean]

Rain makes bullet faster, tighter groups.

Please explain.....I have never heard this theory.

 

[Terry O]

I've shot in 600 yd matches when it was raining so hard you could barely make out your target with virtually zero impact to elevation. Groups opened some but I believe it was due to reduced target visibility.

 

[Bart B.]

The M14NM rifle's first flash hiders collected enough raindrops to deflect bullets a MOA or more. They were eventually reamed out a few hundredths inch that fixed it.

Muzzle brakes can do the same thing.

 

[DirtySteve]

Rain equals 100 % humidity.... So you can run the numbers..

 

[243Mendoza]

Keep your ammo and barrel dry otherwise you can make pressure really quick.

My daughter and got caught in a down pour after our sighters. I shot and had a very hard bolt lift, got the bolt open and the primer fell out. Looked over to my daughter to have her dry her ammo before shooting and she showed me her primer fell out of her 223 case too!

+1

 

[rardoin]

Better than wind flags or mirage as an indicator IME.

 

[FatBoy]

I have shot in the rain dozens of times and never noticed an changes beyond visibility. I agree with what's been said, rain usually comes with a drop in the wind and the wind that is there is MUCH easier to see.

 

[Dgd6mm]

I'll go with zero effect. Some of my best scores have been in the rain. Yes you can get pressure, water does not compress well.

 

[ngb1787]

Please explain.....I have never heard this theory.

Rain is a lubricant, i was told this by a very experienced record holder. This is why when a rain starts ur group is higher in elevation, speed is increased,

 

[Jr Rigsby]

Try this-coat bullets in Rain-X