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17HMR


harveykeitel22
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a 17hmr will drift 5" over 125m in a 10mph cross wind.

 

so lots compared to a CF, little compared to a 22rf

 

 

I have to disagree with you there - Ive been shooting an HMR for a couple of years and never once had to adjust my aim for wind :)

 

The round travels at 2550 ft/sec wind of 10 mph has little or no impact in my opinion even at ranges in excess of 125m

 

Les :hmm:

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I have to disagree with you there - Ive been shooting an HMR for a couple of years and never once had to adjust my aim for wind :)

 

The round travels at 2550 ft/sec wind of 10 mph has little or no impact in my opinion even at ranges in excess of 125m

 

Les :hmm:

 

i shoot rabbits regularly at a distance I know to be 130-135m, and the prevailing wind is basically directly across that. I don't have a way of measuring the exact speed but when there is a "strong breeze" it can easily make you clean miss a rabbit completely if you don't change your aim.

 

here are the raw ballistics for you too

 

http://www.varmintal.com/17hmr.htm#Wind

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i agree totally - i always head shot if possible to save meat damage, and a good stiff side wind will mean you miss completely at 100 yards if you don't compensate.

how much just takes practise.

i love the .17, the bunnies don't :hmm:

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I have to disagree with you there - Ive been shooting an HMR for a couple of years and never once had to adjust my aim for wind :)

 

The round travels at 2550 ft/sec wind of 10 mph has little or no impact in my opinion even at ranges in excess of 125m

 

Les :hmm:

 

Chuck Hawkes states that in a 10mph wind, drift would be 3.3" at 100 yds and 8" at 150 yds.

Not surprising for such a light round.

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The round travels at 2550 ft/sec wind of 10 mph has little or no impact in my opinion even at ranges in excess of 125m

 

You must be kidding. I leave the 17 at home on a windy day. Just because it goes fast doesn't mean it's unaffected. I zeroed mine at 32 yards on a windy day and the bullets were pulling to the left.

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You must be kidding. I leave the 17 at home on a windy day. Just because it goes fast doesn't mean it's unaffected. I zeroed mine at 32 yards on a windy day and the bullets were pulling to the left.

 

Is that the length of your back garden :hmm:

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I have to disagree with you there - Ive been shooting an HMR for a couple of years and never once had to adjust my aim for wind :)

 

The round travels at 2550 ft/sec wind of 10 mph has little or no impact in my opinion even at ranges in excess of 125m

 

Les :hmm:

 

What utter rubbish. Does all your shooting take place in a near-vacuum?

 

Wannabefisher, buy a Kestrel (or other) hand-held anemometer if you genuinely need to assess wind when shooting.

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I have to disagree with you there - Ive been shooting an HMR for a couple of years and never once had to adjust my aim for wind :)

 

The round travels at 2550 ft/sec wind of 10 mph has little or no impact in my opinion even at ranges in excess of 125m

 

Les :hmm:

 

 

Well Lez i can clearly say that either you have never used a anemnometer(Wind measuring device) or have no idea what a 10MPH wind is like .

My .223 pushing a 50grn pill @3500 fps drifted 1.75" over 100 m in a 15mph cross wind so i would say 5" seems reasonable for a 17grn over a similar distance in less wind .

 

BTW are you aiming for head or body?

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Are you converting one .17 HMR to permanent NV use?

 

Yeah, I'm planning on splashing out on a proper bit of kit after i've saved for a bit...! I might stick it on my .22lr though, as it's so so so bloody quiet in comparison to my s/a.

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Re wind deflection

From my service rifle shooting days

At 500m prone with SLR ( the section match as I recall)

In a stiff cross wind at Magilligan,

I was shocked at how far off into the wind I had to aim,

I would almost say 1/2 way between the frames, from hazy recollection.

I am sure someone can provide the ballistics, wind could reasonably have been 20/25 mph

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Well Lez i can clearly say that either you have never used a anemnometer(Wind measuring device) or have no idea what a 10MPH wind is like .

My .223 pushing a 50grn pill @3500 fps drifted 1.75" over 100 m in a 15mph cross wind so i would say 5" seems reasonable for a 17grn over a similar distance in less wind .

 

BTW are you aiming for head or body?

 

 

I cant say Ive notice any problems with wind- :blink: :oops::lol: and I did say in my opinion guys- opinions are sometimes incorrect- I usualy go for head shots and dont miss many shooting off a bipod- my HMR is zeroed at 75 yards and I shoot anywhwere between 75 and 125 yards

 

Maybe Ive never experienced wind that you guys have come across - but as I say I personally have never had to aim off for wind- I have 25,000 acres to shoot over most of it is in a valley south of the Quantock hills- not often windy and I cannot honestly say Ive ever thought to measure it

 

But I will bow to your superior knowledge :lol::D

 

Not looking to start a war or anything :lol:

 

atb

 

Les :sly::yes:

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Maybe my earlier post was a tad forceful, Les, but I'm genuinely surprised. Do you make a concerted effort to either shoot straight into the wind, or with your back square to it? In a valley, with katabatic wind, you'd normally expect greater wind speeds that the surrounding flatter areas.

 

I'm shooting on flat land in East Anglia, and we've had a consistent 16-25mph wind for the last 8 days, gusting up to 37mph (I checked the logs from the weather station on top of our grainstore this morning). I've been doing a lot of shooting with my HMR over the last week, and as the wind picked up this morning, I was definitely having to compensate. Even with a wind-bucking 180gr round from the 7mm, I'd still allow for wind at over 100 yards if it was on my quarter.

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Not got a 17 but thinking very hard about getting one!

Looking at my ballistic calculator and plugging in Hornaday V max 17gr with a 10mph cross wind at 90 degrees it shows:-

 

20 yds 0.16"

30 yds 0.31"

40 yds 0.52"

50 yds 0.81"

70 yds 1.59"

90 yds 2.67"

110 yds 4.09"

120 yds 4.93"

 

I was also talking to BASC on a different topic and got on to .17 calibre and he was also saying .17's are very wind prone, from tests they had carried out.

 

all above not my opinions just info available in public domain.

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as said - I usually shoot from a biopod or my 4x4 I try to get face into the wind if there is any- stay up wind of bunny or fox as is normal

 

Maybe Ive just been lucky where wind did not play a part - a tad forceful maybe - but we are all entitled to our opinion Baldrick and I value everyones opinion so long as its the same as mine LOL :blink: :oops::lol::lol:

 

 

Les :sly:

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Not got a 17 but thinking very hard about getting one!

Looking at my ballistic calculator and plugging in Hornaday V max 17gr with a 10mph cross wind at 90 degrees it shows:-

 

20 yds 0.16"

30 yds 0.31"

40 yds 0.52"

50 yds 0.81"

70 yds 1.59"

90 yds 2.67"

110 yds 4.09"

120 yds 4.93"

 

I was also talking to BASC on a different topic and got on to .17 calibre and he was also saying .17's are very wind prone, from tests they had carried out.

 

all above not my opinions just info available in public domain.

 

 

the thing is everyone moans about the wind effects but its so much better than a .22lr, if you just stick to 100 yard shots when windy and take body shots then you'll be hard pressed to see much difference. If you paper punch then of course you will.

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Not got a 17 but thinking very hard about getting one!

Looking at my ballistic calculator and plugging in Hornaday V max 17gr with a 10mph cross wind at 90 degrees it shows:-

 

20 yds 0.16"

30 yds 0.31"

40 yds 0.52"

50 yds 0.81"

70 yds 1.59"

90 yds 2.67"

110 yds 4.09"

120 yds 4.93"

 

I was also talking to BASC on a different topic and got on to .17 calibre and he was also saying .17's are very wind prone, from tests they had carried out.

 

all above not my opinions just info available in public domain.

 

 

Im not disputing hard facts- just saying I have never experienced this problem where I shoot :yes::lol: :and according to your chart above even being 4.93 out at 100 yards would still result in a dead bunny as they are a tad longer than 4.93" :blink: :oops::lol:

 

Ok I give up- maybe I'll sell the hmr and stick to shotguns lol

 

 

 

Les :lol::sly:

Edited by Lez325
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