Chronograph ?

I have the new version of Prochrono DLX with the bluetooth connection to the your cell phone and it works fine. Its handy to have the shot string go to your phone, and you can have the speed broadcast in audio if you wish. For indoor and low light use I first tried using the Harbor Freight hockey puck led light trick of attaching them to the diffuser screens with rubber bands but had varying success, so I eventually purchased the factory light kit which was a major improvement.
 
I have had this Beta Chrony for over ten years. Shot it twice and dropped it once but it still gives me the info I want. Battery lasts a year or so even though I use it often. It folds in half so I can put it in my range bag a big plus cuz I have it with me all the time. I just set the cheap Harbor freight lights on the diffusers when I use it indoors and it never misses a beat. When I am outside I put it in the shade without the diffusers and it werqs perfect.

https://www.opticsplanet.com/shooting-chrony-beta-model-chronograph-23105.html







Although the FX Pocket Chrony is a bit spendy and gobbles batteries it is still worth considering because of it's portability and convenience.

https://penchetta.com/fx-pocket-chronograph-radar/


 
I have used a Chrony Beta for years. It works (better now that I added LED lights like biohazardman shows in his post) but it is a pain to set up and very fussy about alignment of the barrel, and both sensors.

I just got an FX Chrony and find it much more convenient. It takes a minute to setup and fits in my shooting box so I use it more than I would the Beta. 
 
It sounds like you don't plan on using it much? That is what I thought at first, but I actually keep it out for most if not all of my range session. I am glad I purchased something flexible, so I don't have to worry about where it is when I'm shooting and I can shoot any target without moving the chrony. 

I guess your price consideration and space are two of the most important things to consider.

  1. You don't need an expensive one to get decent readings that help you tune your gun. Price is personal though, but an expensive one is not required.
  2.  How much space you have to set up the chrony is super important. Do you have room on your bench in front of your rifle, or room for a tripod for it? Some of them are fairly large and some are much smaller. How much do you want to carry with you when you shoot?
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    I thought about all these things when I was considering one. I went with the FX Chrony. At almost $200 retail, it was more than I really wanted to spend, knowing I could have gotten several of the other very popular ones for $100 or less. I am glad I chose the FX for me. I love that I can throw it in my range bag and not have to carry yet another bag of stuff! I also love that it can hang on my barrel, and I can shoot at any target from 10-100yards in any direction and never have to get up to move my chrony or worry about whether I am going to shoot it. I also have found that because of all this, I can put it on my rifle, shoot all my shots with it, and see the results of every shot. It helps identify why some fliers happen too, if there is an odd gap in power. While it was double what I wanted to spend, I have found it to be much more useful than I ever planned so I'm glad it worked out. 
 
This is all great info thanks

i kinda am leaning toward the fx pocket because of its size and fact I can throw it into my gun case and I’ll just Get to use it more 

im going to use it with the app strelokpro and make some scope stickers 

have you guys had luck using scope stickers/reel tape to zero in every different yardage and just dial in the scope to it?

also any idea what the max kill range would be for a Wildcat .25 MK2 approx? Just curious I’m mainly under 50 yards but I was curious also how far it pushes out 
 
For StrelokPro and scope stickers, I would suggest using StrelokPro as your guide, but I personally would not make the stickers until you are out on the range and can confirm the distances. Strelok is good but is only as good as the inputs and calculations. I have considered the scope stickers/tape, but I didn't like how jumbled it got when I tested it out. I created the file from Strelok, updated the values that I needed to, hid some columns, resized and printed it. Some people tape it to their bottle or use range cards/books. You can tape a small one inside your lens flip cap too. 
 
I bought the Competition Electronics ProChrono DLX Chronograph and picked up string LED tape for indoor shooting. It didn't work at all. I eventually bought the light strip made for it and it worked great. This factory unit puts out no visible light other than a power indicator LED so i'm assuming the sensors are infrared. This explains why my LED light strips didn't work.