Rifle Scopes Falcon Optics

[aqualung]

Hi Guys,

Appologies if this question has already been asked, but I searched a couple of times and couldn't find anything.

OK, I might be being dumb (probably am!), but I want to know this;

Is a metric turret adjustment the same as mil/mil when used with a mil dot reticle?

OR, is a mil adjustment turret different?

Thanks guys,

Neil

 

[Lindy]

Re: Falcon Optics

There is nothing "metric" about mils. Both milliradians and MOA are measurements of angle which have <span style="font-weight: bold">nothing</span> whatsoever to do with any system of linear measure.

There are two times Pi radians in a circle, and a milliradian is simply one-thousands of a radian. One milliradian is an angle which subtends an arc whose length is 1/1000th of the distance from the vertex.

In other words, one milliradian subtends an arc whose length is:

1 yard at 1000 yards.
1 meter at 1000 meters.
1 mile at 1000 miles.
1 league at 1000 leagues.
1 fathom at 1000 fathoms.
1 inch at 1000 inches.
1 foot at 1000 feet.
1 lightyear at 1000 lightyears.
1 attoparsec at 1000 attoparsecs.
3.6 inches at 3600 inches (100 yards).

It has nothing to do with any English or Metric system of linear measure.

Nor has it anything to do with the reticle. There are scopes with mildot reticles which adjust in MOA. I have never seen or heard of one, but there could be scopes with MOA reticles which adjust in mils.

It makes good sense to have a scope which adjusts in the same angular measurement that the reticle is graduated in. On the other hand, there are a lot of things in this world which make no sense.

 

[OFIS]

Re: Falcon Optics

the parallax focus is labeled in meters on falcons, thats the only thing metric about it. it is listed 1cm at 100m on the turrets, but could just as easily say:

1 yard at 1000 yards.
1 meter at 1000 meters.
1 mile at 1000 miles.
1 league at 1000 leagues.
1 fathom at 1000 fathoms.
1 inch at 1000 inches.
1 foot at 1000 feet.
1 lightyear at 1000 lightyears.
1 attoparsec at 1000 attoparsecs.
3.6 inches at 3600 inches (100 yards).

but most importantly is whats listed before that (<span style="font-weight: bold">.1MRAD</span>/1cm @ 100m)

and yes i copy pasta'd that chart from you lindy. maybe it just needs to be posted more?

1 yard at 1000 yards.
1 meter at 1000 meters.
1 mile at 1000 miles.
1 league at 1000 leagues.
1 fathom at 1000 fathoms.
1 inch at 1000 inches.
1 foot at 1000 feet.
1 lightyear at 1000 lightyears.
1 attoparsec at 1000 attoparsecs.
3.6 inches at 3600 inches (100 yards).

 

[Lindy]

Re: Falcon Optics

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">it is listed 1cm at 100m on the turrets</div></div>

Schmidt and Bender used to mark turrets that way. They wised up.

 

[BobinNC]

Re: Falcon Optics

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Paduan Learner</div><div class="ubbcode-body">Hi Guys,

Appologies if this question has already been asked, but I searched a couple of times and couldn't find anything.

OK, I might be being dumb (probably am!), but I want to know this;

Is a metric turret adjustment the same as mil/mil when used with a mil dot reticle?

OR, is a mil adjustment turret different?

Thanks guys,

Neil </div></div>

Neil,

To illustrate what they are saying above:

Here's a Partial drop table for a 308 Win shooting a Sierra 155 Palma Match @ 2800 FPS, using Falcon's 1 cm clicks @100M and Mildot reticle.

Column 2 Drop: 1 cm Clicks
Calculated Table
Range Drop Drop
(yd) (mil) (Clicks)
0 *** ***
100 -0.0 -0.0
200 -0.5 -5.0
300 -1.2 -12.1
400 -2.0 -20.5
500 -3.0 -30.0
600 -4.1 -40.7
700 -5.3 -53.0
800 -6.7 -66.9
1000 -10.2 -101.7

In practice you would round your clicks to the nearest whole click.

Bob

 

[Lindy]

Re: Falcon Optics

They are not 1 cm clicks.

They are 0.1 milliradian clicks.

 

[rc2125]

Re: Falcon Optics

Paduan Learner, If you are ordering one, and want the mil/mil version, order what some people/dealers are calling the "metric" one and you will have the mil/mil adjustments you are after. Recently got one, 4-14x44, have run about 500 rounds looking through it the past few weekends, up and down the 1k range and am very happy with it!

 

[JoeSmith]

Re: Falcon Optics

Great Googly Moogly!! Astrophysics in a sniper site! Awesome!
Never thought I'd see a day where parsecs were being discussed here...

 

[BobinNC]

Re: Falcon Optics

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lindy</div><div class="ubbcode-body">They are not 1 cm clicks.

They are 0.1 milliradian clicks.
</div></div>

Lindy,

Yes, your right of course, they are 0.1 mils per clinks, even though the maker wrongly calls them 1cm @ 100m per click and 60cm @ 100m per turret revolution, total elevation = 2.0m @ 100m. And there in lies the confusion for some....

Falcon should have called it 0.1 mils per click @ 100 yards and 6.0 mils @ 100 yds per revolution and total elevation of 20.0 mils @ 100 yds.

Thanks for reminding me,

Bob

 

[aqualung]

Re: Falcon Optics

RC,

THAT'S what I wanted to know.

Thanks, yours was by far the most useful post.

Neil

 

[aqualung]

Re: Falcon Optics

Lindy,051F. Come on guys, I'm not that fucking new! I do know what a mil is. The question asked about SCOPE TURRETS, not "What is a mil"

I learned about mils in the military, like everyone else did.
I learned about degrees when becoming a professional pilot.
Oh, I learned about circles, tangents, Radians and all that other good stuff when I did my FIRST degree Bsc(Hons).

Please don't talk down to people. Treat everyone you meet with respect, until you KNOW you're dealing with an arsehole. Even then, they sometimes do have something to offer.

Sorry to say all that guys, but I really felt that your response was a real talking down to me, and DID NOT ADDRESS THE QUESTION ASKED.

Sorry if you were just trying to be helpfull, but it wasn't.

N

 

[flims]

Re: Falcon Optics

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BobinNC</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lindy</div><div class="ubbcode-body">They are not 1 cm clicks.

They are 0.1 milliradian clicks.
</div></div>



Falcon should have called it 0.1 mils per click @ 100 yards and 6.0 mils @ 100 yds per revolution and total elevation of 20.0 mils @ 100 yds.

Thanks for reminding me,

Bob
</div></div>
Bob,
why would they want to say 0.1Mils at 100yds? each click is 0.1Mils independent of the range. its always 0.1Mils /click at 100 or 500 or 1000. its only the cm equivalent that changes

 

[OFIS]

Re: Falcon Optics

wasnt talking down, figured you diddnt know what 0.1 MRAD meant and you were confusing it with someone that was measured in cm.

maybe they stopped marking them with 0.1MRAD, im looking at mine right now, and its marked "0.1MRAD/1CM@100M" so i could be wrong.

i only re-iterated the what is a mil table because they couldve wrote any mil definition after 0.1MRAD. the metric name is merely that, a name.

sorry mate, no hard feelings

 

[aqualung]

Re: Falcon Optics

BobinNC,
Thanks for the drop chart. That was useful too. It was something like that I was looking for as well, and hence the going metric thing, miling in meters, then applying cm adjustments. I reckon it just makes the maths easier and faster.

N