Rifle Scopes TMR Training.
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Re: TMR Training.
James i also like to apply subtension for rangefinding and holdover. I apply the "mil"-ranging formula for all of my multi-stadia reticles for both rangefinding and downrange zeroing. Here's the system in a nutshell copied from Varminter.com. Just replace the 2.65 IPHY figure in the equation with .72 IPHY (.2 mil TMR) for just about the most rangefinding accuracy possible in the reticle--
Since there appears to be many views here i thought i'd bring up a point that i believe is paramount with the mil-dot reticle, but very infrequently discussed, in fact, almost never. The most important aspect of the concept of mil-dot application is not the mil-dot reticle itself, but the fact that the mathematical formula used for calculation is not specific to the mil-dot and can be used with any multi-stadia reticle and even tgt. turret out there for not just rangefinding but also downrange zeroing as well. Here is how the "mil-ranging formula" can also be used with the plex reticle (copied from another thread)--
I use the mil-ranging formula with any reticle that has more than 1 point in it. For that reticle (Leupold's RES Duplex system) i believe it subtends (measures) 5.3 inch per hundred yds. at 10x between plex post tips. or 2.65 IPHY X-hair to post tip. I use 11" back to brisket (for a coyote). Here's the equation--
tgt. size (") x range of reticle subtension measurment (usually 100 yds.) / subtension (") / mil-reading (decimal equivalent) = range (yds.)
Now substitute the variables and --
11 x 100 / 2.65 / 1.0 (coyote occupies 1 complete x-hair to post tip unit)=415 yds.
now finish the chart--
1100/2.65/1.1=377
415/1.2=345
415/1.3=320
etc.
This system is way better than the RES Leupold established with their VX Series scopes, moslty due to it's flexibility and efficiency of application.
Now for downrange zeroing calcs using the mil-ranging formula all one needs to do is just substitute the bullet drop where the tgt. size variable is since bullet drop when referenced through an optic is basically the same sort of dimension as a tgt. size. This time we'll do it for 37" drop at 530 yds. referencing the mil-hold for that range--
37 x 100 / 3.6 / x = 530, x=1.9 mils. holdover
...or hows about a MOA turret--
3700/1.0472/x=530, x=6.6 MOA
This is the reason that a mil-dot reticle in a SFP optic can be used at any power (and consequently subtension) for rangefinding and/or downrange zeroing. It could be used with archery sight pins as well, or even open sights on a revolver.
James i also like to apply subtension for rangefinding and holdover. I apply the "mil"-ranging formula for all of my multi-stadia reticles for both rangefinding and downrange zeroing. Here's the system in a nutshell copied from Varminter.com. Just replace the 2.65 IPHY figure in the equation with .72 IPHY (.2 mil TMR) for just about the most rangefinding accuracy possible in the reticle--
Since there appears to be many views here i thought i'd bring up a point that i believe is paramount with the mil-dot reticle, but very infrequently discussed, in fact, almost never. The most important aspect of the concept of mil-dot application is not the mil-dot reticle itself, but the fact that the mathematical formula used for calculation is not specific to the mil-dot and can be used with any multi-stadia reticle and even tgt. turret out there for not just rangefinding but also downrange zeroing as well. Here is how the "mil-ranging formula" can also be used with the plex reticle (copied from another thread)--
I use the mil-ranging formula with any reticle that has more than 1 point in it. For that reticle (Leupold's RES Duplex system) i believe it subtends (measures) 5.3 inch per hundred yds. at 10x between plex post tips. or 2.65 IPHY X-hair to post tip. I use 11" back to brisket (for a coyote). Here's the equation--
tgt. size (") x range of reticle subtension measurment (usually 100 yds.) / subtension (") / mil-reading (decimal equivalent) = range (yds.)
Now substitute the variables and --
11 x 100 / 2.65 / 1.0 (coyote occupies 1 complete x-hair to post tip unit)=415 yds.
now finish the chart--
1100/2.65/1.1=377
415/1.2=345
415/1.3=320
etc.
This system is way better than the RES Leupold established with their VX Series scopes, moslty due to it's flexibility and efficiency of application.
Now for downrange zeroing calcs using the mil-ranging formula all one needs to do is just substitute the bullet drop where the tgt. size variable is since bullet drop when referenced through an optic is basically the same sort of dimension as a tgt. size. This time we'll do it for 37" drop at 530 yds. referencing the mil-hold for that range--
37 x 100 / 3.6 / x = 530, x=1.9 mils. holdover
...or hows about a MOA turret--
3700/1.0472/x=530, x=6.6 MOA
This is the reason that a mil-dot reticle in a SFP optic can be used at any power (and consequently subtension) for rangefinding and/or downrange zeroing. It could be used with archery sight pins as well, or even open sights on a revolver.
Re: TMR Training.
OMG !
I have no idea what that guy just said...
A TMR is just a mil dot reticle with hash marks and a .5 Mil reference point.
The formula to range an object is pretty simple
Size of Target in Inches X 27.78 / Size of Target (measured in the reticle) in Mils = Range in Yards
if you are not using a mil based turret, and have mixed adjustments, (Mil reticle / MOA Turrets) Then you take your MOA values to dial the elevation and divide that information by 3.43 to get your Mil equivalent.
So, if you know know it takes 8 MOA to hit a 400 yard target, you divide that by 3.43 and that means you can hold over 2.3 Mils to hit the same target. Another easy way to figure this,
Go to JBM and in column 1 use MOA for your Turrets and in Column 2 uses Mils for your reticle. If you have a Mil / Mil scope, it's the same, so what you dial works in the reticle.
Get your data first, then convert it if necessary, after you can create a simple chart, from a 100 yard zero the reticle will easily let you hit a 600 yard target simply holding over. (depends on the rifle ballistics) You can then slide that scale by dial on some dope, then adjust accordingly.
What that coyote hunter wrote I have no idea and was lost on the first line.
OMG !
I have no idea what that guy just said...
A TMR is just a mil dot reticle with hash marks and a .5 Mil reference point.
The formula to range an object is pretty simple
Size of Target in Inches X 27.78 / Size of Target (measured in the reticle) in Mils = Range in Yards
if you are not using a mil based turret, and have mixed adjustments, (Mil reticle / MOA Turrets) Then you take your MOA values to dial the elevation and divide that information by 3.43 to get your Mil equivalent.
So, if you know know it takes 8 MOA to hit a 400 yard target, you divide that by 3.43 and that means you can hold over 2.3 Mils to hit the same target. Another easy way to figure this,
Go to JBM and in column 1 use MOA for your Turrets and in Column 2 uses Mils for your reticle. If you have a Mil / Mil scope, it's the same, so what you dial works in the reticle.
Get your data first, then convert it if necessary, after you can create a simple chart, from a 100 yard zero the reticle will easily let you hit a 600 yard target simply holding over. (depends on the rifle ballistics) You can then slide that scale by dial on some dope, then adjust accordingly.
What that coyote hunter wrote I have no idea and was lost on the first line.
Re: TMR Training.
If you're trying to get the most accuracy out of rangefinding in any multi-stadia reticle (a reticle with more than one point of reference in it), use the finest subtension u have available to you in the formula, which is .2 mil. Divide that into tenths. U dont have to put the .2 mil lines to use if u don't wanna'...
OMG--u certainly don't have to know how to manipulate the system to derive the most amt. of accuracy and flexibility from it either, but for me i have had guys thank me for that information so they can apply it with any reticle they may have. Besides that i've made a lot of $ off it--so i'll stick with it, thank u!
If you're trying to get the most accuracy out of rangefinding in any multi-stadia reticle (a reticle with more than one point of reference in it), use the finest subtension u have available to you in the formula, which is .2 mil. Divide that into tenths. U dont have to put the .2 mil lines to use if u don't wanna'...
OMG--u certainly don't have to know how to manipulate the system to derive the most amt. of accuracy and flexibility from it either, but for me i have had guys thank me for that information so they can apply it with any reticle they may have. Besides that i've made a lot of $ off it--so i'll stick with it, thank u!
Re: TMR Training.
If you say so,
It's the most confusing thing I have ever read on how to range using a mil based reticle, and I have been doing it since 1986.
If you say so,
It's the most confusing thing I have ever read on how to range using a mil based reticle, and I have been doing it since 1986.
Re: TMR Training.
Using the Mil dot or TMR is new to me so some of this is like reading french...lol Is there a video that will go through all of what y'all are talking about? Some times its easer to see it and hear it than just read it. Thanks for y'alls help so far.
Using the Mil dot or TMR is new to me so some of this is like reading french...lol Is there a video that will go through all of what y'all are talking about? Some times its easer to see it and hear it than just read it. Thanks for y'alls help so far.
Re: TMR Training.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lowlight</div><div class="ubbcode-body">If you say so,
It's the most confusing thing I have ever read on how to range using a mil based reticle, and I have been doing it since 1986.
</div></div>
Yeah--that may have been a little much, especially for the OP. Sorry 'bout that.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lowlight</div><div class="ubbcode-body">If you say so,
It's the most confusing thing I have ever read on how to range using a mil based reticle, and I have been doing it since 1986.
</div></div>
Yeah--that may have been a little much, especially for the OP. Sorry 'bout that.
Re: TMR Training.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lowlight</div><div class="ubbcode-body">
The formula to range an object is pretty simple
Size of Target in Inches X 27.78 / Size of Target (measured in the reticle) in Mils = Range in Yards
</div></div>
Lowlight it seems like the math would be simpler with:
(Size of target in yards / Size of target in mils) * 1000
...so I'm curious why you do it your way.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lowlight</div><div class="ubbcode-body">
The formula to range an object is pretty simple
Size of Target in Inches X 27.78 / Size of Target (measured in the reticle) in Mils = Range in Yards
</div></div>
Lowlight it seems like the math would be simpler with:
(Size of target in yards / Size of target in mils) * 1000
...so I'm curious why you do it your way.
Re: TMR Training.
do it your way, but most target sizes are given in inches, so rather than convert an 8" target to yards, they use inches.
If you are smart your not using any math during the process, that is the easiest way to do it.
do it your way, but most target sizes are given in inches, so rather than convert an 8" target to yards, they use inches.
If you are smart your not using any math during the process, that is the easiest way to do it.
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