mil dot table

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long jon
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Location: sunny Bridport, Dorset

mil dot table

Wed Jun 13, 2018 2:56 pm

Hi guys I was impressed with the tables a number of you used when doing the HFT comp. on Sunday. I tried to understand how these would work for my rifle and scope - an s400f superlite with Nikko Stirling 3-9x40 half mil dot scope. But I went home bamboozled.

I then found this table searching other blog sites on the internet. The guy who put it together said "That as a general rule of thumb and assuming its not FAC (over 12ft lbs)start with 35yds for .177 calibre and 30yds if its .22 calibre. Then as a few of the other guys have suggested try various distances at 5 yd intervals to determine your hold over/under ,ideally you should be trying to get as many of your shots within 1 mil dot of zero,so something like this

25 YDS = 1 MILDOT OVER
30 YDS =1/2 MIL DOT OVER
35 YDS =ZERO
40 YDS =1/2 MILDOT UNDER
45YDS= 1 MIL DOT UNDER

My set up is zeroed at 35yd. As I know little about what I am doing I intend to use this table. Worst case scenario it will be out and I will need to go back to the drawing board and search for other tables until I find one that works
Rgds
Jon
(long jon)

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Blackbaronfish
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Location: Nuneaton

Re: mil dot table

Wed Jun 13, 2018 6:34 pm

Try it at the given ranges to see if it works for you. If not note the differences and have your own chart.
I thought i had explained this to you :lol: :lol: :lol: :lol:

BBF
Did I mention that I'm the only one to have attended EVERY annual meet since we started

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GrandadG
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Joined: Sun Feb 15, 2015 5:35 pm
Location: Hemsworth, West Yorks

Re: mil dot table

Wed Jun 13, 2018 6:42 pm

Blackbaronfish wrote:
Wed Jun 13, 2018 6:34 pm
Try it at the given ranges to see if it works for you. If not note the differences and have your own chart.
I thought i had explained this to you :lol: :lol: :lol: :lol:

BBF
It's easy for you bloody youngn's :roll:
Us oldies are losing brain cells at an alarming rate........takes a bit of sinking in :oops: :oops:

Stick with it Jon, you'll get there :D
HW100T .177
AA Prosport .177

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gary martin
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Re: mil dot table

Wed Jun 13, 2018 8:08 pm

try using a ballistic programme such as chairgun, put the required data in, choose the reticle and print it off.

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tonyc
Posts: 58
Joined: Mon May 29, 2017 10:55 am

Re: mil dot table

Thu Jun 14, 2018 11:18 am

You won't be able to use that table with your scope. The magnification doesn't go high enough.

Download Chairgun from the Hawke website and have a play. Each gun modifies the ballistics coefficient (and drag) of the pellet so you probably won't get the exact trajectory for your gun using the standard pellet data but it will be near enough for starters.

The key factors are zero ranges, pellet (weight and ballistics coefficient), power, scope height and magnification.
I have various setups for different guns but here are a couple of examples:

High mounts (45mm line of sight to bore)
AA DF 8.44gr
Far zero 35yds (near zero 15yds)

Mil dot holdover(holdunder) for
range yds / at 8.5x / at 10.5x

10 / 1 /1.5
15 / 0 / 0
20 / (0.33) / (0.5)
25 / (0.5) / (0.67)
30 / (0.33) / (0.5)
35 / 0 / 0
40 / 0.33 / 0.5
45 / 0.67 / 1
50 / 1 / 1.5
55 / 1.5 / 2
60 / 2 / 2.5
65 / 2.5
70 / 3

Hope you can make sense of this as this forum doesn't seem to allow tables.

If you increase the magnification the zeros stay the same but the mil-dot steps are at closer ranges.

For AA/JSB 7.9gr pellets I can use the same tables out to 50yds by giving -2 clicks elevation and for 10.34gr by giving +6 clicks elevation.

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long jon
Posts: 11
Joined: Fri May 18, 2018 11:14 am
Location: sunny Bridport, Dorset

Re: mil dot table

Thu Jun 14, 2018 4:03 pm

Hi Guys and thankyou for your responses.

I came away from the weekend sure that I understood what every one had told me about mil dot. But one day later it had disappeared into the great ether in the sky, including a lot of explaining that BBF had given me - sorry.

Now, that I do understand a bit more I will be going down the range to try to put that into effect.

Members of AAOC who like me failed their "O" level maths, do not give up. I think its worth persevering to understand this issue. Its just that if you are like me it will take a bit more effort.

Ohhhhhh, my brain hurts
Rgds
Jon
(long jon)

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Blackbaronfish
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Location: Nuneaton

Re: mil dot table

Thu Jun 14, 2018 4:26 pm

long jon wrote:
Thu Jun 14, 2018 4:03 pm
Hi Guys and thankyou for your responses.

I came away from the weekend sure that I understood what every one had told me about mil dot. But one day later it had disappeared into the great ether in the sky, including a lot of explaining that BBF had given me - sorry.

Now, that I do understand a bit more I will be going down the range to try to put that into effect.

Members of AAOC who like me failed their "O" level maths, do not give up. I think its worth persevering to understand this issue. Its just that if you are like me it will take a bit more effort.
Just enjoy the learning. You can’t beat going out and shooting at ranges and noting your aim points

BBF
Did I mention that I'm the only one to have attended EVERY annual meet since we started

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tonyc
Posts: 58
Joined: Mon May 29, 2017 10:55 am

Re: mil dot table

Thu Jun 14, 2018 6:24 pm

Jon, if you'd like a couple of tables customised for your setup I'll be happy to create some using Chairgun if that helps. Just send me a PM.
Tony

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TenMetrePeter
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Location: Luton Beds UK

Re: mil dot table

Thu Jun 14, 2018 6:52 pm

I know its been 20 years since I last shot FT but whats wrong with top turret tables for elevation? Doesnt matter what mag you set it to.
S400 MPR 10m with TMP alloy stock.
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tonyc
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Joined: Mon May 29, 2017 10:55 am

Re: mil dot table

Thu Jun 14, 2018 9:31 pm

TenMetrePeter wrote:
Thu Jun 14, 2018 6:52 pm
I know its been 20 years since I last shot FT but whats wrong with top turret tables for elevation? Doesnt matter what mag you set it to.
The logical extension to your question, Peter, is why use mil dots at all? It's a matter of preference. Shooting live quarry I'd want a simple, memorable, quick system for point of aim. It doesn't need to be exact, just statistically reliable. Then why not use it for HFT?

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