JTPinTX
Custom Call Maker
Y'all may have to bear with me a bit on this post. I'm trying to figure out how to get some images posted so it may be a train wreck until I get it figured out. I think that for some of the Thermion users this may be of interest though.
Starting off I hunt in open country and really wanted a thermal with LRF. That didn't happen because it wouldn't hold zero, so I ended up with a Thermion. It holds zero great, but all of you guys know how hard it is learning to judge distance through a thermal. I do LR shooting and know how to range with a reticle so I started my search to try find something that would work.
First off, on the Thermion there are 3 "scalable" reticles that are for all practical purposes the same as a FFP reticle. Meaning that the size scales up and down with changes in power, making them stay the same size in relation to the target image at all magnifications, which is critical. Two of those reticles are MIL based reticles, so if you are used to doing that, just use one of them.
The other one though is similar in looks to a BDC reticle, but has sub-tensions based on ranging. That reticle is the X51FI-300. Of course with Pulsar being a European country those sub-tensions are based on the game over there, which is fox, roe deer, and boar. The Pulsar website gives all the data on the measurements they use and how to use it here, page 13:
https://issuu.com/yukon2/docs/thermion_reticle_catalogue?fr=sZmMzMjI5ODQ5
Converting cm to inches I found that for all practical purposes the number they use for roe deer is very close to what a guy needs for the body depth on coyotes. I have always used 8"-9" for the body depth on a coyote in my part of the world. Ours are mostly smaller western coyotes. I know that will vary parts of the country and young vs mature animals. Any time you are ranging with a reticle there is give and take, and numbers are not absolute. It should give you a pretty good idea though.
I have been using this reticle and ranging with it like this for a couple months now. It appears to me that the numbers are pretty close. Here is a hand drawn version of the reticle from my notes, and the calculations I made, along with distances. The only thing that was not a direct calculation, but instead a derived number is the "C" distance for the coyote. At the end I will also post up a video of a coyote I shot at a laser ranged 135 yards and y'all can look at that and compare to the "C" distance of 132 yards.
If you guys look all this over and think there are problems/issues with my math or any of my premises, by all means let me know. I would love for some of you guys to try and and either verify or debunk me. I want things that work and if there are problems I would like to know. I would also like to know if it helps anyone as well.
Video:
Starting off I hunt in open country and really wanted a thermal with LRF. That didn't happen because it wouldn't hold zero, so I ended up with a Thermion. It holds zero great, but all of you guys know how hard it is learning to judge distance through a thermal. I do LR shooting and know how to range with a reticle so I started my search to try find something that would work.
First off, on the Thermion there are 3 "scalable" reticles that are for all practical purposes the same as a FFP reticle. Meaning that the size scales up and down with changes in power, making them stay the same size in relation to the target image at all magnifications, which is critical. Two of those reticles are MIL based reticles, so if you are used to doing that, just use one of them.
The other one though is similar in looks to a BDC reticle, but has sub-tensions based on ranging. That reticle is the X51FI-300. Of course with Pulsar being a European country those sub-tensions are based on the game over there, which is fox, roe deer, and boar. The Pulsar website gives all the data on the measurements they use and how to use it here, page 13:
https://issuu.com/yukon2/docs/thermion_reticle_catalogue?fr=sZmMzMjI5ODQ5
Converting cm to inches I found that for all practical purposes the number they use for roe deer is very close to what a guy needs for the body depth on coyotes. I have always used 8"-9" for the body depth on a coyote in my part of the world. Ours are mostly smaller western coyotes. I know that will vary parts of the country and young vs mature animals. Any time you are ranging with a reticle there is give and take, and numbers are not absolute. It should give you a pretty good idea though.
I have been using this reticle and ranging with it like this for a couple months now. It appears to me that the numbers are pretty close. Here is a hand drawn version of the reticle from my notes, and the calculations I made, along with distances. The only thing that was not a direct calculation, but instead a derived number is the "C" distance for the coyote. At the end I will also post up a video of a coyote I shot at a laser ranged 135 yards and y'all can look at that and compare to the "C" distance of 132 yards.
If you guys look all this over and think there are problems/issues with my math or any of my premises, by all means let me know. I would love for some of you guys to try and and either verify or debunk me. I want things that work and if there are problems I would like to know. I would also like to know if it helps anyone as well.
Video:
Last edited: