Hi guys. Curious what you use to get the trajectory or ballistics of each gun.
Currently I set a target at 10 yards and every 5 yards out to my max range with each particular gun. Using my scope mil dots I then make a small chart to refer to for each yardage drop.
Is this the best method?
Interested to see what you guys are doing.
I just shoot my airguns for fun. I don't hunt or shoot competition so I don't worry about it. Figuring my airguns out again is part of the fun getting reacquainted with each gun. My springers have a lot of individuality and need to be shot differently.
I normally have all my scopes sighted in at 35 yards, which is the most common distance I shoot at. Then, from there I have to figure it out again each time I shoot a different airgun.
I know guys that keep records like you do including pellet preferences, hold and rest positions, and range charts like you do. It all makes sense.
David Enoch
@davidenoch
David's reply reflects my own feelings on the subject but I do agree that going through the efforts of learning these things could be valuable and interesting.
For me at least, there is no substitute for real world results. A gun either likes a pellet or it doesn't. For example, take the Crow Magnum pellet, I have found that pellet to shoot extremely well in several guns with serious knock down power. However, it has never performed well for me beyond 30-35yds, so I no longer wish to use them. I keep it simple: either I hit what I'm aiming at or I don't. I have tried chairgun in the past and it is an interesting tool but at times it was more like "arm chair quarterbacking" and conflicted with my results so I no longer wish to use that either.
There is something to science to be sure, especially when it agrees with the real world. I'm not a mathematician purist, but I do appreciate them and the work that they do. Maybe something will come along to spark my interest in BC's who knows?
I started with ChairGun Mobile and BC data gathered from all over the place. Here's a comprehensive pellet BC list after much searching:
But ChairGun Mobile really is not helpful when wanting to switch pellets, rifles, etc.
So I found Strelok Pro, and it is truly amazing for practical shooting in the field.
Just last week a new mobile ballistic calculator was released, this is not as pretty as Strelok — but is has all kinds of otherwise complicated calculations even Strelok doesn't have (airtube fill and shots, trajectory graphs, BC calc. from two velocities and range, etc.) — and you can take it with you in your pocket, no PC necessary.
Link: https://www.airgunnation.com/topic/official-release-simple-pcp-calculator-mobile (Owner has since deleted the file)
Also look at: https://gpc.fotosoft.co.uk
I like shooting by the numbers!
(1) Measure your projectiles BC with a chrono.
(2) Measure your MV with a chrono.
(3) Measure your scope height.
(4) Measure your range to target.
(5) Measure your wind direction and velocity with a anemometer, bluetoothed to your ballistic calculator.
(6) Enter the measurements into your ballistic calculator.
(7) Dial the numbers from the ballistic calculator on the scope turrets.
(8) ❌ Aim and shoot — for a first-shot hit! ? ❌
Matthias
Does anyone know what the ballistic coefficient of a .35 diablo exact pellet? Also, I saw on another chat where someone said to use G1 and the bullet type. But when I look at a chart of "G" types, it clearly looks like it should be a GL. What should it be???
Ballistic Coefficients - Hi-Lux Optics
Yes, Don,
imprecise clicks will give you imprecise shots, even when using a dope chart instead of a ballistic calculator.
But most ballistic calculators have a function where you can
(1) Measure the actual clicks of your scope,
and
(2) Calibrate the ballistic calculator to the non-standard clicks of your scope.
Matthias