FX Trajectory turmoil
- Thread starter TC724
- Start date
Sounds like maybe Chairgun is using the wrong reticle?
At the end of the day, I don't depend on Chairgun (or Strelok) to tell me what reality is. I tell the app what is actually happening with the pellets and let it fill in the blanks. And after using Chairgun for years, Strelok is much more accurate when it comes to hold overs. Clicks are a wash, I always have to get my clicks manually.
At the end of the day, I don't depend on Chairgun (or Strelok) to tell me what reality is. I tell the app what is actually happening with the pellets and let it fill in the blanks. And after using Chairgun for years, Strelok is much more accurate when it comes to hold overs. Clicks are a wash, I always have to get my clicks manually.
Upvote 0
I believe what 18.13 said. Now with that my home range is in CA, basically at sea level. When hunting 5000ft and generally colder. I just worry about squirrel accuracy. So I just adjust as needed on the fly if you will. Yes the programs work or I should say help. But only shooting at a known temperature at every distance gives you a start. And yes when hunting my average shots are 50-150 yards. The close ones are fun and I have made,some out to 275 yards.
Upvote 0
If your Crown has a 20 MOA rail that could be affecting the "scope height" from Chairgun's point of view, I think. But what I do is put the best scope height I can measure into Chairgun, shoot groups at a bunch of ranges and then compare Chairgun's results to my shooting. There are many errors that contribute to differences. I think they include the BC, the muzzle velocity, the scope height, my shooting (with respect to the zero and the groups at various ranges), and the actual range to the target (I use a steel or fiberglass tape depending on the range). So I expect to juggle the BC and the scope height as well as the zero range to make the chairgun results align with my shooting results. I do not expect precise alignment, but I don't want it to match at 10, 11, and 12 yards and then be off at 50 yards. I want it to match pretty well over the entire range from 10 to 50 yards. Once I get this aligned, I save that Chairgun for future reference and print up some range cards. I think using the Chairgun results, aligned to my shooting results, is more accurate than just using my shooting results (in large part due to uncertainty about my shooting results). The one thing I don't really worry about is the math in Chairgun. I guess it could be wrong but I really doubt it is.
I appreciate that the OP tried hard to put some good inputs into Chairgun but I also submit it's pretty hard to be super precise about scope height, zero range, and shooting results. But I agree the differences are surprising. I'd try messing with the three inputs I play with to see if you can at least get closer.
I appreciate that the OP tried hard to put some good inputs into Chairgun but I also submit it's pretty hard to be super precise about scope height, zero range, and shooting results. But I agree the differences are surprising. I'd try messing with the three inputs I play with to see if you can at least get closer.
Upvote 0
I did actually change my scope height to 1.2 “ instead of the actual 1.9 and it fixed it. However, I’ve down this on so many of my rifles before “measuring” and I’ve never had any issues. I’m not saying I’m not making a mistake but it doesn’t add up… I took the shroud off and measured from the barrel to the scope center and it’s still showing 1.9” I’m just so confused.
Upvote 0
Is your scope SFP or FFP? If SFP and you're shooting at a magnification other what the scope is calibrated at (like 10x), then all the Mil hold-offs would be off for anything other than 10x.
Upvote 0
