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F T/R Competition Battling mirage while on the range?.....

BigtimeAub

Sergeant
Full Member
Minuteman
Aug 7, 2011
259
0
41
Auburn, AL
I was wondering if the experts would care to share any secret techniques that they may have for us newbs when it comes to combating the dreaded enemy, Mirage. As I'm still learning, the techniques that I use are to back off on my power until the mirage is minimal (or until I'm at the absolute lowest power setting, whichever comes first), readjust the parallax, try to be as precise as possible in keeping the exact same POA, and shooting position as possible. Thoughts, opinions? What am I doing right/wrong?

EDIT: I guess I should explain the primary event that spawned this question/thread. I was recently shooting with remau308 and lal357 (both great guys and both thoroughly destroyed me). We were at the home range of lal357. The weather was nice, temp mid to high 70's, clear sky, lots of sunshine. The range is about 90% grass. At the feet of the targets, grey stone has been spread in what appears to be an effort to cover an area that turns to red mud when wet (lal357 could correct me if I'm wrong). Anyway, there is a fairly large area covered by this grey stone that runs the length of the target line and is approximately 10 yards wide. This stone was just soaking up the sunlight and creating a ton of mirage (visible with the naked eye from 300 yards) just in front of the targets while the mirage was at 0 for the rest of the entire distance. Hope that helps.

PS, I try to search everything I can before posting a thread asking newb type questions. However, the answers aren't always right there to be found without weeding through hundreds of posts for hours on end. So, sometimes I feel like it may be beneficial to myself as well as many others to ask the most basic/simple questions in order to get precise/accurate answers. Also, I keep seeing over and over again where posters tell other posters to go to the range and ask questions to the more experienced shooters. Well, that's exactly what I'm doing here, albeit the range is removed. Thanks so much to all of those who do participate and provide good responses, even those that aren't so blunt but are indeed informative yet thought provoking.

 
Re: Battling mirage while on the range?.....

Try making a mirage shield, by putting 3 velcro piece's on barrel and same for underside of shield, the lighter the material the better. However this only helps with mirage from barrel heat. I have made a super long sun shade that goes the whole length of the barrel but haven't tried it yet.

F-Class017.jpg
 
Re: Battling mirage while on the range?.....

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Daniel308</div><div class="ubbcode-body">Try making a mirage shield, by putting 3 velcro piece's on barrel and same for underside of shield, the lighter the material the better. However this only helps with mirage from barrel heat. I have made a super long sun shade that goes the whole length of the barrel but haven't tried it yet.

F-Class017.jpg
</div></div>

Yeah, I'm sure I'll get to doing something like that at some point. I just haven't experienced any mirage under those circumstances as of yet. I'm going to go back and edit my OP to explain the situation that spawned this thought/thread. Thanks for the advice and picture.
 
Re: Battling mirage while on the range?.....

Take 1 section of 2 inch wide window blind to make your barrel heat shield and affix with velcro dots. That works good for barrel heat and doesn't look half bad either. I was missing mine yesterday.

I just power down my scope for down range mirage. Mirage isn't necessarily a bad thing. It shows wind currents, etc. Spring time up here, ND, seems to be the worst time for mirage as the dew in the mornings burns off in the afternoon. Later in the summer as the ground is warmed up, there isn't as much dew in the mornings to cause terrible mirage. I only see it on the dead calm days.
 
Re: Battling mirage while on the range?.....

My apologies, now I'm embarrassed even more. Apparently my searchfu skillz are severly lacking. But thanks for the links. They actually just enhance this thread and will help all of us Newb F T/R shooters even more. Very much appreciated!
 
Re: Battling mirage while on the range?.....

havent looked at the links yet bigtimeaub but they have been hit on the head in ths post what i do the mirage will tell you wind directionand so what speed just by looking at the waves the tighter the wave the more wind current. the mirage shield i use i got from brownels then i realized that it can be made for next to nothing (go to lowes they might have a scrap peice you can have gonna do that for the 6.5 creedmoor ) and turn down the power .
i prefer to shoot in the mitage i believe if i can conquer that it makes me a better shooter thats why i practice during the time of the day i do . and dont just leave it at the lowest setting all the time when we shot the first string i had to turn mine down to 16 power but on the 2nd string a set it to 39 power i adjust as the mirage does . on a side note we have to do that again it was nice practicing with someone else and i dont mind going to another range if you find one. or if you want to change up the course of fire let me know i'm loading rounds now for our team match in 2 weeks against backwoods shooters team and the format we shot is what i will be shooting in that match.

larry

ps i picked up an anealing kit and concentricity gauge founf my runout was .002-.005 now .001 or less
 
Re: Battling mirage while on the range?.....

Mirage is not your dreaded enemy, it's your best friend. Crank up the scope power and learn to love it. As suggested earlier, do use a barrel mirage shield.
 
Re: Battling mirage while on the range?.....

+1 to what DBailey stated. Mirage should only be your enemy if you're fortunate enough to shoot where there is little to no wind. If you have to deal with wind corrections, especially constantly changing wind conditions, use the mirage to your advantage to aid in making the correct windage calls/adjustments.
 
Re: Battling mirage while on the range?.....

I love the mirrage, it let's you know what the bullet is going through. I still have a lot to learn about it though.
mirrage band on the barrel is a must cause that one will only tell you your barrel is hot.
 
Re: Battling mirage while on the range?.....

Well, we're talking about several types pf mirage here. Downrange mirage and barrel mirage; and both are important to understand. Both interfere with the target image clarity.

Downrange mirage responds to downrating the optical magnification.

It can also do some service disclosing some aspects of wind conditions. To optimize this, increase magnification and try focusing at various intermediate distances. Each focus distance can reveal wind conditions at that particular point on the midrange trajectory.

Barrel mirage is convection distortion of the image as it crosses the final hurdle from the target to the objectve lens. That sightline passes over the heated barrel, which has an airflow passing upward around the hot barrel and onward to generate a turbulent airflow directly above the barrel, smack into the path of the incoming image. It acts similar to rippling water to create a gyrating optical distortion.

Mirage bands and mirage tubes can help. I have tried both. I use black ribbon and velcro for bands that roll up small into a pill bottle; and black card stock/paper tubes that nestle around the objective and extend toward the muzzle. Two tubes telecoped together can be adjusted to handle most applications.

The ones that worked best were slightly larger in their inner diameter than the objective (this allows lengthwise airflow). I kept mine about an inch short of the muzzle, any longer and they could get shredded by muzzle blast.

Greg
 
Re: Battling mirage while on the range?.....

I'm no expert by any means, but I shot in a 1000 match this past week end with a lot of mirage,..or at least what I thought was a lot. Not much wind but the mirage was like looking through the bottom of a glass.

I was using the best glass out there,..a NF-NXS-12x42,...had it cranked up all the way.

My last ten shots were,..a 9, 8 - 10s which included 3 Xs,...got in a hurry and jerked the last shot and ended up with a freaking 7. My score for the 10 round string was was obviously a 96-3.

Maybe not a great score for a hack like me,..but I was happy with it.

Like I said, the mirage was like looking through the bottom of your beer glass,..very distorted. I just aimed at the middle and let'er go.
 
Re: Battling mirage while on the range?.....

^^^^^^^^
Your NF isn't the best glass out there, but good shooting

I use the mirage to let me know where to hold, if it is bad enough to give me a moving target, I turn the power down.