Hey all, I'm new to air guns and I'm curious about the differences in the calibers, are there any trajectory charts available for comparison?
Tables for .22 .25 .30 .35?
- Thread starter SlipperySausage
- Start date
You will need to get Chairgun Pro (free) or Strelok (pay) and plug in the data for your gun, caliber, fps, BC, scope height, etc, etc, etc. Either program will tell you all you want to know and more. (grin)
Oh, and you WILL NEED a chronograph of some sort. The one I use is like this one. But you may be able to find the same thing cheaper.
I didn't use a link for Strelok because I don't use it and don't know what the safe link is to download it.
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Strelok is for mobile only.Both app stores have it.
Strelok is excellent for the field (and the Pro version is worth the few extra $).
It allows you to save different projectiles and power settings for the same gun — and with a few taps in the app you can make the switch and are ready for the next hit.
But for what-if scenarios and comparisons you will be better served by ChairGun: compares up to for scenarios (pellet/ caliber/ power/ range) — with graphs, the works: • Point blank range with recommended zero
• Wind drift
• Impact energy and velocity
• etc.
Another option — with graphs —is: GPC Ballistics Applications.
It's a full suite, for Windows, Android, iOS, Linux.
Free. Link:
https://GPC.fotosoft.co.uk/Home.html
For hitting squirrels at 25y in the woods you won't need a chronograph — but likeBackStop recommended — a chronograph is essential if you want to do this hobby a bit more serious and performance oriented, e.g.: tune your gun/s, calculate trajectories, do long range shooting, shoot in stronger winds....
SlipperySausage, welcome to this hobby that keeps many of us here at AGN up till past midnight.
O wait, now look!: It's already past midnight in my part of the woods.... Who would have thought....?!
Matthias
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ShootersCalculator.com | Ballistic Trajectory Calculator
Calculates the ballistic trajectory of a bullet fired from a rifle, handgun or other firearm. Produces a ballistic trajectory chart and table that shows the drop, velocity, kinetic energy, windage, and trajectory of a bullet.
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their are so many different variables concerning trajectory . things that most people do not consider. Temp. Humidity , altitude to name a few
just a thought ? has anyone done a study below sea level ? places in the desert are below sea level ?
just a thought ? has anyone done a study below sea level ? places in the desert are below sea level ?
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Understandable. However, being absolutely new to this, I'm finding it a tad difficult to compare which cal would be better suited for the tasks I need.
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maybe if you state your intended use , we could give better info ? i looked back and you never said or implied what type of objective you had in mind .
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Mainly for target (50-100y) and then for squirrels/rabbits. Would prefer a cal that is some what similar to subsonic 22LR. So far I'm most interested in the .25.
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ShootersCalculator.com | Ballistic Trajectory Calculator
Calculates the ballistic trajectory of a bullet fired from a rifle, handgun or other firearm. Produces a ballistic trajectory chart and table that shows the drop, velocity, kinetic energy, windage, and trajectory of a bullet.shooterscalculator.com
Thank you! Do you know if pellets/slugs ever list their ballistic coefficient? Also, which drag function do you recommend for pellets (G1)?
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Both app stores have it.
Strelok is excellent for the field (and the Pro version is worth the few extra $).
It allows you to save different projectiles and power settings for the same gun — and with a few taps in the app you can make the switch and are ready for the next hit.
• Point blank range with recommended zero
• Wind drift
• Impact energy and velocity
• etc.
GPC Ballistics Applications.
It's a full suite, for Windows, Android, iOS, Linux.
Free. Link:
https://GPC.fotosoft.co.uk/Home.html
BackStop recommended — a chronograph is essential if you want to do this hobby a bit more serious and performance oriented, e.g.: tune your gun/s, calculate trajectories, do long range shooting, shoot in stronger winds....
SlipperySausage, welcome to this hobby that keeps many of us here at AGN up till past midnight.
O wait, now look!: It's already past midnight in my part of the woods.... Who would have thought....?!
Matthias
A chronograph is certainly on my list - can you recommend one that is barebones?
Thank you, it certainly is keeping me up haha
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i have put the chinese $23 amazon up against the Caldwell and it did not vary but a few FPS (which could have been the pellet or wind or ?) . So unless your doing super calculations ??
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I have been able to find the BC on all the slugs I shoot both Nielsens and the FX hybrids. I don't shoot pellets much but the BC Information is out there on the most popular pellets like the JSB's. The G1 most closely matches my slugs. I am not sure about pellets. They obviously have much more drag. Maybe do a 50 yd zero and then a 100 yd shot and measure the drop. Then play with the drag function number to match the 100 yd drop on the chart generated. Once it's closely matches at 100 yds all the other distances should be close. I have used this ballistics calculator to map out distances to 400 yds.
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Get the one or one similar to what I linked to. It works well. There is also a "table-top" model of the same chrono and it does give you tenths of a meter, but you will likely be better served (and MUCH less likely to shoot the chrono) with the muzzle mounted one I listed.
This is the best bang for your buck for a chrono that I have ever come across and as someone previously posted, it is all you need unless you are anal retentive and need to know your FPS to a fraction of FPS... and you really don't. (chuckle)
In any case, you can spend a lot more, but you will not get enough value for your $$$ compared to the one I listed. JMHO - YMMV (smile)
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Matthias, I thought I didn't need a chrono when I started, but now I recommend one - even the cheap one I recommended - because it will tell you more about what is going on with your airgun than just about anything else. Not to mention, without one, you REALLY don't know what your FPE is and/or whether or not you have enough, too much or not enough FPE. Without a chrono, you will be continually guessing if the FPS has changed. Let alone using it for ballistics and trajectory. (smile)
Both app stores have it.
Strelok is excellent for the field (and the Pro version is worth the few extra $).
It allows you to save different projectiles and power settings for the same gun — and with a few taps in the app you can make the switch and are ready for the next hit.
• Point blank range with recommended zero
• Wind drift
• Impact energy and velocity
• etc.
GPC Ballistics Applications.
It's a full suite, for Windows, Android, iOS, Linux.
Free. Link:
https://GPC.fotosoft.co.uk/Home.html
BackStop recommended — a chronograph is essential if you want to do this hobby a bit more serious and performance oriented, e.g.: tune your gun/s, calculate trajectories, do long range shooting, shoot in stronger winds....
SlipperySausage, welcome to this hobby that keeps many of us here at AGN up till past midnight.
O wait, now look!: It's already past midnight in my part of the woods.... Who would have thought....?!
Matthias
I only replied because you said "For hitting squirrels at 25y in the woods you won't need a chronograph". If we were talking about powder burners at short distances I might agree... maybe... (grin)
Of course this all depends on the caliber of the airgun and the level of accuracy/precision you personally require. Lots of people go to larger calibers to "make sure" they make a kill. Notice I did not say a "clean kill"... anyway... (wink/grin)
Accuracy/precision is everything in shooting. Otherwise, we would be using hand grenades or worse! (grin)
Respectfully, I STRONGLY disagree with that statement when it concerns airguns. (smile)
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Well, you said it, sub-sonic .22... So... if I were you, I would go with a .22 airgun/rifle. Yeah, the projectile weight will be less than what you will find in most .22 PB ammo, but it will cost less, the trajectory will be flatter than a .25 airgun. As far as 100 yard performance at sub-sonic levels... do some searches on AGN and GTA about what velocity you need to shoot accurately, if not with precision at 100 yards with .22 pellets or slugs. Slugs are your best bet at 100 yards, but there are no guarantees. Also, you may be able to get "a" gun that shoots 100 yards well, but has too much FPE (foot pounds of energy at the muzzle) for your shorter shots on tree rats/rabbits. If you don't have to worry about a backstop (as I do in an urban environment), then that does make the choice a little easier. (smile)
In any case, to each their own and good luck to you! (smile)
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