Rifle Scopes Tree reticles: experience with one, not sure how the others work

[sidewaysil80]

Quick question folks, I recently went through a course where we used the Tremor 2 reticle and it was very fast and intuitive. Throughout the course we weren't allowed to dial and could only use the holdovers out to 7-800m. I had only used traditional mil reticles prior to this and like this concept for a gas gun/dmr match rifle. Unfortunately Nightforce no longer offers the Tremor 2 in the ATACR line and I do not like the Tremor 3. With that I am considering the mil-xt reticle but am not sure how it .2 mil dots compare to the 4mph dots of the tremor.

I get how the Tremor used 4mph dots and scales them over various "ranges" (elevation) and wind speed but how do the other or mil marked tree reticles work such as the mil-xt? Is it just .2mil dots that you hold based on vertical hold to give you your wind call? In other words are you manually calculating then adding the actual mil hold for wind via .2 mil increments or am I missing something. I didn't notice any type of pattern or specific spacing in the dots other than the .2 mil so I wanted to confirm thats how they are used.

Sorry if that is a rudimentary or frequently asked question and I appreciate any insight.

 

[C_R_Slacker]

Wind dots are like a bdc reticle for wind. Any tree reticle will do what you are asking it to do. Get on your ballistic calculator and find out what full value wind speed moves the bullet one full mil at 1,000 yards. That speed is your base wind. Every hundred yards should be really close to .1 mil, so .3 at 300, .6 at 600, .8 at 800, etc. If the wind is double your base, double your hold. If the wind is half your base, halve your hold. Do the same thing adjusting for half or quarter values for wind. It's super fast and easy and works pretty well. You can even adjust your base wind to changes in density altitude. There are people on here that are really good at it. And there are threads on the subject if you dig around. One of the everyday sniper podcasts talks about it also.

 

[PBWalsh]

Slacker is refering to the MIL-based BC idea. Basically, whatever the FIRST number of your BC is YOUR "MPH". So a .30 cal 155 Berger Hybrid Target with a .483 G1 BC going 2800 - 3000 fps is a 4 mph rifle. Wind blows 4mph at 400 yards? Hold .4 mils. 4mph at 350? Hold 3 mils.

About 600 or 700 yards you might need to add a tenth to the base call.

Add or subtract 1mph for every 200 fps in either direction. .483 at 3200fps = 5mph; .483 at 2600fps = 3mph.

 

[sidewaysil80]

Wind dots are like a bdc reticle for wind. Any tree reticle will do what you are asking it to do. Get on your ballistic calculator and find out what full value wind speed moves the bullet one full mil at 1,000 yards. That speed is your base wind. Every hundred yards should be really close to .1 mil, so .3 at 300, .6 at 600, .8 at 800, etc. If the wind is double your base, double your hold. If the wind is half your base, halve your hold. Do the same thing adjusting for half or quarter values for wind. It's super fast and easy and works pretty well. You can even adjust your base wind to changes in density altitude. There are people on here that are really good at it. And there are threads on the subject if you dig around. One of the everyday sniper podcasts talks about it also.

Slacker is refering to the MIL-based BC idea. Basically, whatever the FIRST number of your BC is YOUR "MPH". So a .30 cal 155 Berger Hybrid Target with a .483 G1 BC going 2800 - 3000 fps is a 4 mph rifle. Wind blows 4mph at 400 yards? Hold .4 mils. 4mph at 350? Hold 3 mils.

About 600 or 700 yards you might need to add a tenth to the base call.

Add or subtract 1mph for every 200 fps in either direction. .483 at 3200fps = 5mph; .483 at 2600fps = 3mph.

Thanks for the help!

My 16" gas gun (Fed GMM 175gr .308) has a .243 G7 BC , velocity of 2458. So it's a 2mph rifle, but how do you determine how many tenth mils to hold per distance? Is 400yds the constant?

According to Strelok at 1000yds it takes 1mph of wind to move the bullet 1.1 mil, not sure if I need to adjust that distance due to lower velocity.

 

[PBWalsh]

Run your data with atmospherics and wind mph into JBM, that will show you alot to go off of.

Here is about what you should see at sea level, 4mph wind. Your actual BC is probably in the high .3s. I ran this at 3mph and it favors (lines up) a tad better at 4mph. Run this at 3.5-3.7mph and it'd line up even better.

 

[spife7980]

Quick question folks, I recently went through a course where we used the Tremor 2 reticle and it was very fast and intuitive. Throughout the course we weren't allowed to dial and could only use the holdovers out to 7-800m. I had only used traditional mil reticles prior to this and like this concept for a gas gun/dmr match rifle. Unfortunately Nightforce no longer offers the Tremor 2 in the ATACR line and I do not like the Tremor 3. With that I am considering the mil-xt reticle but am not sure how it .2 mil dots compare to the 4mph dots of the tremor.

I get how the Tremor used 4mph dots and scales them over various "ranges" (elevation) and wind speed but how do the other or mil marked tree reticles work such as the mil-xt? Is it just .2mil dots that you hold based on vertical hold to give you your wind call? In other words are you manually calculating then adding the actual mil hold for wind via .2 mil increments or am I missing something. I didn't notice any type of pattern or specific spacing in the dots other than the .2 mil so I wanted to confirm thats how they are used.

Sorry if that is a rudimentary or frequently asked question and I appreciate any insight.

You dont have to manually calculate anything, if you know your data then you know how many mils you need to go. You just use the reticle to hold that many.

Think of reticles like a tape measure but for angular measurements instead of length.

The typical reticle is just a tape measure, you have your even consistent graduations that you can use to measure with.
A tremor reticle is like the little diamonds on the tape for stud spacing. Its handy to use for that particular application but the diamonds are useless for pretty much everything else.

Knowing how to actually read a tape measure and use it properly is a much more valuable, informative and widely applicable skill than just lining something up with a preset spacing of your dots.





Im going to use the tremor 3 instead of the 2 just because I cant find any good big clear pictures of the 2.
In this reticle the lines on the upper side of the subtensions are the essentially what the christmas tree is.
The dots underneath it are wind things. If you know what dot you need to hold you could also just as easily take that dots position and find out its actual mil value by comparing it to the actual subtensions. On the tremor 2 I dont think they have as nice of a grid, I think it is just little vertical lines not connected to one another.


So this red dot thats highlighted is actually like 9.1 mils down and 3.4 mils right. Dont know what that dot is actually supposed to line up with on your rifle but I do know its actual location.