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 Post subject: Re: Shooting and Firearms
PostPosted: Sun Apr 22, 2018 7:08 pm 
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First Sergeant

Joined: Mon Sep 15, 2008 9:50 pm
Posts: 9724
Location: Eskridge, KS
Reputation points: 12552
2018-04-22
1330-1530
50F
5 MPH N

Goal" Wind practice

Environment: Overcast, muddy, per wind turbine near our buildings wind 6 MPH NE at 60 foot up in the air, where our turbine is.

Equipment: 7.62(22), LC M118LR, NF 7-35x T3, LRF, Kestrel.

Activity: Rolled out to 700yd shooting area, looking for a spot I could shoot prone. I found one at 660 meters, a.k.a 720yds.

Image
Image

Setup. Measured wind for 2 mins with Kestrel.
Low: 3.6
Avg: 4.9
High: 7.4

Measured direction 6 times throwing grass tufts up, 4 times from dead ahead, once from 355 and once from 5. Got behind the gun, the mirage was boiling, consistence with wind from ahead.
Shooter said 5.8 up for 720yds. I put the 5.8 mil line just below the bull and decided not to hold for wind.
Got a first round hit !!! I couldn't believe it, usually I try to avoid all emotion when shooting, but I had to stop for a minute. I guess, I just got lucky. If you try this 100 times, you will get lucky and get a first round hit now and then.
I've bought maybe 7 books on wind calling in the past month, including the crazy expensive one by Linda somebody. A lot of them are focused on competitions that have range flags and where you can shoot sighters and where you get lots of shots and if you miss now and then it might be ok.
My goal is first round hit.
Having read all these books, they are all a fancy version of Orkan's " get out there and shoot a lot and figure it out yourself.
And that is fine, it tells me no one has it completely nailed. If they did, they could write it down and everyone could learn it and it would be like walkin' and talkin' ... so it isn't like that. It is a crap shoot, but I think you can improve the odds if you focus on the activity.
I got a first round hit yesterday and another first round hit today. Got lucky 2 days in a row !!!
:D

I guess, it is almost like I should only shoot 2 rds per day per target because all the shoots past that are almost cheating, I've already fired my "sighters" ... i.e. the first two rounds are my sighters whether they hit or miss.

So I watched the grass and I watched the mirage. When the wind strengthened it seemed the grass was bending such as to indicate the wind was coming from 5 off the bullet path. When the wind died, maybe it was coming from 355, when it was in the middle maybe dead ahead.

I waited until the gust died and fired the second round dead on at 5.8 up and got second round hit. I remained calm that time, cycled the bolt. The bipod and monopod were digging holes in the mud again, so I shifted my position sideways to get away from the holes. The wind was up a bit and the mirage was moving flat from right to left. So I held 5.8 up and half a wind dot (2 mph effective cross wind) right. The bullet went right where the barrel was pointing, missed by 2 inches to the right of the target good on elevation. In other words, effectively the wind was from 0. So that means my clues from up on the hill were wrong and even my clues from the mirage were wrong. The wind in between was not moving laterally. Where I was focused it was and on the hill it was, but not elsewhere.

Wind was average for 4th shot so held dead center at 5.8 and got a hit.

Waited thru a gust and when wind returned to avg, held dead center 5.5 and got a hit.

So 4/5 from the first 5 rd magazine.

Loaded another.

Contined waiting for what seemed like the "constant wind" as one writer calls it. Not the gust, not the lull.

Held dead center and 5.8 up and got hit. Oh and one advantage of using the 175gr bullet over the 77gr, I've been using with the 5.56(18) is these bullet make a clear "ding" on the target and move it clearly also. So I can really tell when I get a hit.

Rounds 2-4, waited for the constant and held 5.5 and dead on and got hit.

Did same for 5th round, it was left and low 0.5 mil !!!

Loaded another mag, I thought, maybe I screwed up the elevation hold.

Fired 1st round of third mag at 5.8 and right half a wind dot, was half a mil low but centered.

So, I held 6.4 up and half a wind dot right and got a hit.

Third round the same holds, was centered but a mil low!

Held 7.4 up and half a wind dot right and got a hit !

Repeated and got another hit.

Started checking for loose stuff, this is a new gun. Stock, barrel, scope, scope base, it was the suppressor, it was loose about a quarter turn. I've never had this happen before, but maybe the loose suppressor was letting pressure out early and causing the bullet to lose velocity and drop faster? Either that or my barrel was melting right before my eyes! One clue is there was a splotch of anti-seize on the barrel that apparently "squirted" out from the threads when the suppressor moved. Maybe I used too much anti-seize.


Results/Summary:

Image

11/15 hits. One miss was a wind call miss, 2 misses were velocity loss issues and one miss was both causes. This stage on my land, I'm shooting North by NNW from about 1300 feet ABS off the side of a hill over our creek which is about 1160 feet ABS at this point. So shooting over the trees that are along the side of the creek. But the banks on the North side and then the pasture over there rise up pretty fast and I'm only shooting down 3 degrees at the target. But the bullet is high in the air relative to the ground along part of its path.

So I have a 500yd stage and a 770yd stage (so far 720yds is the farthest I've tried prone. I checked and I couldn't get prone at 770yds, tripod only from back there.

But each stage has different terrain and hence different wind and so shooting both each time I go out is indicated.

If the gun shoots correctly next time, that should prove the loose suppressor was the issue. If it still shoots low, it must be broke ! I was not shooting particularly fast, I'd guess 2-3 rounds per minute as I was watching the wind and waiting for the wind and I only have one 5 rd mag. So I don't think I melted the barrel.

Oh, the stock is still too far forward. I adjusted it, but apparently not enough. Got a red "welt" on my collar bone. So not making a solid pocket, so need to move the stock back another notch.

_________________
Go trumpf Go !!!
(will the resident return to being the President?)
(will the rainbow shack return to being the White House?)


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 Post subject: Re: Shooting and Firearms
PostPosted: Sun Apr 29, 2018 7:47 pm 
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Sergeant Major
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Joined: Mon Sep 15, 2008 9:50 pm
Posts: 28687
Location: West coast of the east coast
Reputation points: 19649
The State of New York threatened banks with pulling state business ($200 billion in pension funds) from banks that continue business with gun manufacturers who didn’t toe the line on How NY State thinks they should be dealing with the gun industry.

Hornady has issued their response:

http://www.thetruthaboutguns.com/2018/0 ... -business/

Good for Hornady.

_________________
The American Republic will endure until the day Congress discovers that it can bribe the public with the public’s money.
- misattributed to Alexis De Tocqueville

No representations made as to the accuracy of info in posted news articles or links


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 Post subject: Re: Shooting and Firearms
PostPosted: Mon Apr 30, 2018 6:47 am 
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First Sergeant

Joined: Mon Sep 15, 2008 9:50 pm
Posts: 9724
Location: Eskridge, KS
Reputation points: 12552
2018-04-28
2200-2300
40F
0-5 MPH NE

Goal: Wind practice with PVS-30

Environment: Clear, light breeze from 30 degrees off bullet path. Full Moon rising.

Equipment: 7.62(22), NF 7-35x T3, LC M118LR, PVS-30. TH Helmet with PVS-14 and PAS-20.

Activity: Rolled out to 500yd FP. Activated spin drift and coriolis effect. Numbers changed by a 10th of a mil.
Shooter saying hold up 3 mils and right 1 mil for 10 mph 90 degree wind.

Image

I held 3 up and aimed dead center for wind. First round hit.
Repeated, second round miss right 2 inches. For third round held left 2.5 mph hit. repeated 4 and 5 round hit. Sixth round miss did not see. Repeat, miss low, held up 3.1 and left 2.5 mph, hit. 8th, 9th and 10th round up 3.1 left 2.5

Image

Results/Summary:

7/10 hits. Hits were concentrated low and right. Hum, I wonder if the PVS-30 is doing that? I tried mounting in 1 rail farther forward to see if I could get more magnification (I could not). Maybe the collimating lenses can't do its best job if mounted farther forward. I will try again mounting farther back.

Cranked down to 10x to try to get clear image. Could not. I ran the gain between 70% and 50%, image still fuzzy. Refocused several times, place fucus ring between two points of greater fuzzy on each side.

Maybe I need the moon higher in the sky? I swear the CO-lR was clearer than this.

==
Update: I just checked shooter and I did NOT have spin drift/coriolis turned on. With them turned on, the hold should be 3.1 !!

_________________
Go trumpf Go !!!
(will the resident return to being the President?)
(will the rainbow shack return to being the White House?)


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 Post subject: Re: Shooting and Firearms
PostPosted: Mon Apr 30, 2018 6:49 am 
Offline
First Sergeant

Joined: Mon Sep 15, 2008 9:50 pm
Posts: 9724
Location: Eskridge, KS
Reputation points: 12552
2018-04-29
1430-1600
60F
10 MPH ESE

Goal: Wind practice

Environment: Shifted from light rain to partly cloudy, with sun just coming out, as I was heading out. Variable breeze from the ESE.

Equipment: 7.62(22), NG 7-13x, LC M118LC, Kestrel, LRF

Activity: Rolled out to 500yd FP and setup. Wind read:
Low: 6.8
Average: 9.9
High: 14.4
Direction, checked 6 times with tufts of grass, 2 times 185 off bullet path, 2 times 180 off bullet path, 2 times 175 off bullet path. Keyed 60F into shooter, which said 3.0 up. Held 2.9 on the bull.
Mirage moving from right to left. Held 4 mph right, 1st rd hit. Saw splotch on low right of target. Held 2 MPH on target 2nd rd hit saw splotch move to the left. Decided to hold 3.0 on the bull. Fired 3 rds got three hits, holding 2 MPH.

Image

Moved to 730yd fp and setup. Wind read:
Low: 4.9
Avg: 7.2
High: 12.6
Six tufts of grass, 150 off bullet path. Mirage moving right to left.
Decided to hold 1.5 wind dots, 7.5 MPH. In theory, should hold about 5 MPH (1 wind dot), but wanted to account for the fact that the bullet passes 60 feet over the creek on the way to the target.
Shooter said hold 5.9 for 725 and 6.0 for 730. Put 5.9 on the bull and held 1.5 wind dots right. Miss 4 inches right. 2nd shot 1 wind dot right, hit low right. Held 6.0 up on the bull and one wind dot right. 3rd shot Miss 2 inches right. Held half a wind dot right and 6 up, 4th shot hit. Repeat hit.

Image


Results/Summary: More challenging with more wind today from right rear of the bullet path. And the variability in the wind was high. You could have a low spot and 5 seconds later a peak. The targets were more visible today. I ran 12x at 500yds and cranked up to 15x at 730yds. Lower magnification helps with the mirage as well.

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Go trumpf Go !!!
(will the resident return to being the President?)
(will the rainbow shack return to being the White House?)


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