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#Post#: 26696--------------------------------------------------
Zeroing range
By: babbyc1000 Date: June 9, 2014, 6:09 pm
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Downloaded the istrelok pro app yesterday (thanks to foxly lol)
and its surprised me how much wind is effecting the rounds.
Normally I zero at 100 yards with the .222 but from now on I
think ill zero at 50. I took a few screen shots to show you what
I've found. plenty of people maybe know this already but thought
I'd post it, food for thought.
Nb .222 with 55g hollow points approx 2600 fps, taking a 10mph
crosswind into consideration. Scope is at 16 power (usual
setting)
First heres the Beaufort scale, showing 10mph as a gentle breeze
HTML http://i149.photobucket.com/albums/s76/babbyc1000/Mobile%20Uploads/3E65D4EC-E23A-4147-8D00-11ECEBAEB86B_zpsemftkaqj.png
So here's a shot showing point of impact at 50 yards, taking
crosswind into consideration
HTML http://i149.photobucket.com/albums/s76/babbyc1000/Mobile%20Uploads/BF270B1B-3A34-4405-85A4-83BE60EF5456_zpswfj69puf.png
So you can see its only pushed off slightly with the wind, but
here's 100 yards and 200 yards showing wind deflected poi
(ignore the up/down movement of the poi, zero was kept at 50)
HTML http://i149.photobucket.com/albums/s76/babbyc1000/Mobile%20Uploads/A5986698-257E-485A-8A7B-1068925951AF_zps45dlosag.png
HTML http://i149.photobucket.com/albums/s76/babbyc1000/Mobile%20Uploads/6CEAE0B8-A554-4DDF-9CE3-492F1D503524_zpsdgucto6r.png
Normally I wouldn't have believed how much it affects the poi
but I shot a couple of rabbits on sat night over 200 yards with
a very light wind (5mph approx) and I had to give them almost a
mil of hold off!
So firstly, if you've got an iPhone get istrelok pro downloaded
lol but secondly if you're having accuracy problems at longer
range the wind could be effecting you when zeroing - that 10mph
deflection at 200 yards is enough to miss a rabbit/fox, so
dropping zeroing range to 50 might help!
#Post#: 26736--------------------------------------------------
Re: Zeroing range
By: Flatliner Date: June 11, 2014, 8:49 am
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How well does the data given by the app compare to result you're
seeing when you shoot? Does it get you on target first time?
#Post#: 26741--------------------------------------------------
Re: Zeroing range
By: babbyc1000 Date: June 12, 2014, 2:31 am
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Can't give you a 100% honest answer to that at mo, both my
zeroing fields are out of commission at mo, but what I can say
is that the poi impact changes it shows are bang on with what
I've found myself so far. Will hopefully get the chance to test
it out to 300 yards next week
#Post#: 26744--------------------------------------------------
Re: Zeroing range
By: foxyloxy Date: June 12, 2014, 5:17 am
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I bought myself a wee kestrel wind meter lately & couldn't
believe how much my wind guestimation was out beforehand. What I
thought was 10-12 mph was actually only gusting at 7mph
according to the meter.
Another thing I found was just because you are getting say a
5mph breeze from 3.00 at the firing position its not safe to
assume that it stays like that for the flight of the bullet. I
had targets out at 400 yards & the breeze there had swung round
to the 12.00 position doing just 2mph due to the topography.
Being able to accurately read the wind is a skill on its own.
Them lads shooting long range have their work cut out for them.
#Post#: 26748--------------------------------------------------
Re: Zeroing range
By: babbyc1000 Date: June 12, 2014, 6:49 am
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Aye I've a wind meter thing too but only used it to help me
learn the wind using a few apps and a us sniper manual I'd
downloaded lol does shock you how much you can be out at times
though, esp like you said when the wind has changed further out
#Post#: 26751--------------------------------------------------
Re: Zeroing range
By: Flatliner Date: June 12, 2014, 7:54 am
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Funnily enough, my Skywatch Explorer arrived this morning. Wind
is hard to judge especially when it's gusting. Any off the apps
all depend on as close to the right data as possible being put
in or it'll throw the results.
#Post#: 26753--------------------------------------------------
Re: Zeroing range
By: babbyc1000 Date: June 12, 2014, 9:17 am
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There's a good video on YouTube by an ex sniper talking about
how wind affects a shot, esp if its gusting at different
directions, ill see if I can find it later
#Post#: 27440--------------------------------------------------
Re: Zeroing range
By: GEOFF.223 Date: July 27, 2014, 9:00 pm
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I have a skywards myself find it a pain in the arse to zero for
altitude.
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