Elevation adjustments

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scott/r
Posts: 885
Joined: Wed Aug 27, 2014 8:22 pm
Location: far north brisbane

Elevation adjustments

#1 Postby scott/r » Wed Sep 12, 2018 4:00 pm

Is it possible for someone to work out an elevation adjustment for a 22lr @ 1085fps from 25m zero to 300m, please. I don't have a ballistic app to do it myself.
It'll much appreciated if someone can help us out.
Scott.

John23
Posts: 428
Joined: Mon Oct 29, 2012 9:11 pm

Re: Elevation adjustments

#2 Postby John23 » Wed Sep 12, 2018 4:13 pm

About 55-58moa

I use elly match at 1066 FPS and it was a 58moa shot to 300m with a 50m zero

I set up a target at 200m to confirm my fly shooting zero and adjusted speed and bc into my calculator .

Shooting a steel plate about 12x12” it was easy to get blown off .

Very little noise to know you hit and takes weeks for the noise to get back to you from the time of fire

John23
Posts: 428
Joined: Mon Oct 29, 2012 9:11 pm

Re: Elevation adjustments

#3 Postby John23 » Wed Sep 12, 2018 4:21 pm

If you can set up with a dusty back drop in the sun you will save a few bullets .

My target is in the shade and with green and if you miss you have zero idea where it lande

About 490cm elivation
1.15 sec flight time
10kmh wind at 3-9 will give 35cm of error

UL1700
Posts: 424
Joined: Sat Sep 16, 2017 5:39 pm

Re: Elevation adjustments

#4 Postby UL1700 » Wed Sep 12, 2018 5:09 pm

Berger claim 53 minutes but I had to guess bullet weight and Ballistic Coefficient (I used 38 grains and a G1 of 0.110) anyway fun to play with if you don't know of it already and comforting to have access to at the range for a beginner like me...

http://www.bergerbullets.com/ballistics/

scott/r
Posts: 885
Joined: Wed Aug 27, 2014 8:22 pm
Location: far north brisbane

Re: Elevation adjustments

#5 Postby scott/r » Wed Sep 12, 2018 5:19 pm

Thanks guys, it should be pretty cool having a go at this. We're going to have a shoot with the 300 f class paper targets.
Scott.

sungazer
Posts: 189
Joined: Fri Mar 17, 2017 7:58 pm

Re: Elevation adjustments

#6 Postby sungazer » Wed Sep 12, 2018 5:35 pm

JBM is able to do it they have quite a few 22LR cartridges in the libary. I have used it even if I have to change a BC it works very well. I print out a drop chart in 10 yrd intervals.

What is the bullet construction solid HP and weight grn?
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John23
Posts: 428
Joined: Mon Oct 29, 2012 9:11 pm

Re: Elevation adjustments

#7 Postby John23 » Wed Sep 12, 2018 5:44 pm

Getting enough adjustment will be your biggest challenge .
I use sports match hight adjustable (about $80 on eBay from the uk)

They will give you up to 50 moa dependant on how you set them up


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