Could a group here take over Chairgun from Hawke?

[Kinetic45^]

That's great news, Carl.... I wonder if he can add a function to be able to input a custom drag profile.... If so, I hope it has lots of Cd input points, not the very few that ChairGun had.... That ability could be a precursor to being able to interface data from LabRadar with Strelok….

Bob

I'll check with him on that.

[JungleShooter]

That's great news, Carl.... I wonder if he can add a function to be able to input a custom drag profile.... If so, I hope it has lots of Cd input points, not the very few that ChairGun had.... That ability could be a precursor to being able to interface data from LabRadar with Strelok….
Bob

Bob, yes, Strelok Pro does have the function of an input of a custom drag profile, thankfully! It gives you a very long table to enter the Mach and Cd data pairs, I counted 100 data fields.


You can send the tables of the calculated data via email to your computer, import them into Excel, and then do comparisons, graphs, the works.

The Windows version of ChairGun is of course very powerful, and there are some things right now that Strelok cannot do, as it is designed to be run on a cell phone, not a big screen computer.
However, Strelok is much more powerful and userfriendly than the cellphone version of ChairGun (Android).


Just today the Strelok developer Boris released an update (at least for the Pro version in Android) that added GL and GS drag models, to the already present GA, G1, G7, and RA4 models.



I'm all game to support the developer in adding some functions that we airgunners need. Even having him release a Premium version, the 12$ I paid for the Pro version were well-spent!

Matthias

[rsterne]

Hey, Matthias.... Thanks for the screen shot of the custom drag profile data entry.... that is a NICE feature.... I may just have to get a tablet to try out Strelok Pro....

Bob

[Kinetic45^]

One of the nice things I do with Chairgun is know my shot curve and in the field on the main page change the FPS from shot to shot (for long range, not doing for short range) so my trajectory chart more closely shows what the shot should be.
It's harder to change with Strelok and takes more taps and page changes.
One of the things I'd like is a 'quick' FPS box on the first page so it can be changed fast for shot curves.

[aceflier]

They arent in the IOS version yet. No update yet.

[Kinetic45^]

They arent in the IOS version yet. No update yet.

Well, I put his email address in a previous post, contact him and ask him about IOS.  Of course, Apple has a big 'check n review' thing for security so that may be the delay updating.
Sorry, I only checked with him on Android.  He seems to be an OK guy from what contact I've had.

Sure deserves some thanks for being responsive to our special needs.

I asked him to show more ranges on the upper dots in the recticle view and he said he'd work on it.
The example I used was if I zeroed at 85 then I would be 3" high at 50 and 3" low at 100 but if I needed to shoot at say, 40 the recticle view page did not show those mrad ranges above the first dot.

[JungleShooter]

Now, for those long range shooters that can't or don't want to get as detailed as a full custom drag profile for each pellet they use Strelok Pro gives us another option:

A customized variable BC entry for each pellet — as BC varies with velocity (this variable BC is directly linked to your selected gun):

Measure the BC of your favorite pellets at up to 5 distances (i.e., velocities)
Enter those BC values into Strelok.
The app will calculate hold overs/ clicks more accurately.

Happy shooting! 
Matthias

[aceflier]

Got an update today. Still no new drag functions. I may have to contact him.

[rsterne]

For some time I have been working on a couple of Excel spreadsheets to use LabRadar data to calculate the Cd, and hence the BC, as a pellet slows down as it goes downrange.... I haven't got my own LabRadar yet (coming in 2 years), but thanks to those who have sent me some data to work from, the spreadsheets are coming along nicely.... The LabRadar has the velocity at 5 distances right on the screen, without having to go into the yard by yard detailed data.... I have a spreadsheet for both, but the "simplified" one that uses the 5 velocity inputs from the screen produces 5 BCs as the velocity decays.... It would seem to me to be ideal to interface with that screen on Strelok, that allows 5 BC inputs.... The only glitch is that my spreadsheets use the G1 drag function because I could not get the GA function in a formula like I could the G1.... However, the spreadsheets also output the raw Cd values, and I think Strelok can accept that data instead of the BCs.... The advantage to using the Cd is that it is "pure" and not confused by choosing a less than ideal drag model that may or may not match your pellet....

Bob

[plinker81366]

For some time I have been working on a couple of Excel spreadsheets to use LabRadar data to calculate the Cd, and hence the BC, as a pellet slows down as it goes downrange.... I haven't got my own LabRadar yet (coming in 2 years), but thanks to those who have sent me some data to work from, the spreadsheets are coming along nicely.... The LabRadar has the velocity at 5 distances right on the screen, without having to go into the yard by yard detailed data.... I have a spreadsheet for both, but the "simplified" one that uses the 5 velocity inputs from the screen produces 5 BCs as the velocity decays.... It would seem to me to be ideal to interface with that screen on Strelok, that allows 5 BC inputs.... The only glitch is that my spreadsheets use the G1 drag function because I could not get the GA function in a formula like I could the G1.... However, the spreadsheets also output the raw Cd values, and I think Strelok can accept that data instead of the BCs.... The advantage to using the Cd is that it is "pure" and not confused by choosing a less than ideal drag model that may or may not match your pellet....

Bob

Bob i cant just wait when you start, playing around with strelok pro, dont get the free version,, the truing option kinda gives you the exact poi at different ranges, and with truing you dont even need a chronograph to get the exact trajectory plot

[PSI-lbc]

Could someone make a list of features they'd like to see in a replacement app?

Works on iOS, Android, Mac, and Windows..obviously.   Use similar inputs..maybe even a similar UI.   But what features are most important and used the most?

[rsterne]

Do everything that ChairGun does.... and add the features that Strelok has that ChairGun doesn't.... I personally love the trajectory graph in ChairGun…. I haven't yet used Strelok, but I haven't seen anyone post such a graph.... Does it have one, or is everything presented in tabular form?....

Personally, I would like a way to input Cd vs Velocity for MANY points, and then show the output as a drag model graph, so that it is easy to visualize, and see obvious errors in your data.... Then go back and recheck to see if the data can be improved.... Once you have a proven drag model for a given pellet or family of pellets, then the "company" should have a way to redistribute that drag model to others who want to use it....

Bob

[tnt76]

On my ios device, I cannot find a free version. AU $

[plinker81366]

 strelok only has a tabular data for inertcepts no graph bob

[PSI-lbc]

Bob

Do everything that ChairGun does.... and add the features that Strelok has that ChairGun doesn't.... I personally love the trajectory graph in ChairGun…

I would think a separation of features for handheld VS desktop.  Obviously, the desktop apps..Win an Mac OSX..would have everything (except inclinometer and GPS).  But for me, the handheld devices..with the exception of the iPad..don't lend themselves to graphing work..too small a screen size to be really useful. 

I see the iOS or Android as being better suited for data collection like entering shot strings. Entering a distance and seeing a holdover displayed on a reticle or the number of -+ clicks from your zero for holding "on".  Using the device inclinometer to establish an angle..for doing distance "cuts".  Additionally, they would do the drag modeling in real-time..shoot in 2 or 3 distances..note the click diff and calculate the trajectory.  No chrony required. 

I would like a way to input Cd vs Velocity for MANY points, and then show the output as a drag model graph, so that it is easy to visualize, and see obvious errors in your data.... Then go back and recheck to see if the data can be improved.... Once you have a proven drag model for a given pellet or family of pellets, then the "company" should have a way to redistribute that drag model to others who want to use it....

Instead of velocity at many points, ideally it would be click differences at many points..jmo.   You could use the click differences to calculate a velocity.  After establishing a "program" velocity you could synch the program to your personal chrony.

[JungleShooter]

Yes, I'd agree that the handheld versions probably won't need graphs.

🔶 However, what is missing sorely in both mobile ChairGun and Strelok is pellet BC calculation based on two chrono velocities.



🔶 Another function I need in the field — and therefore on a mobile is when I'm shooting up at an angle and have a couple of buildings further down range from the target.

I need to know the terminal range at angle A of gun—pellet combo B.
That way I know how shallow or steep my angle needs to be in order to avoid the houses.

Now ChairGun for PC (but not mobile) does this marvellously, cf. this thread with pics:
https://www.gatewaytoairguns.org/GTA/index.php?topic=147260

[Sky]

Chairgun on my phone/tablet is crucial. I'd also like to add new pellets and reticles. I hit them up last year and got a meh response pretty quick. If they let the app lapse something should be done.

[Kinetic45^]

As I said, both fill a niche and without firm hosting Chairgun WILL die.
How long will it stay in the Android 'Play store' (stupid name I winch at every time I go there) because if it is 'abandoned' it will eventually stop working.
So we got sidetracked - I really believe because it's happened with other software programs that users got the program shows it's possible, we or airgunner overall should try to aquire the rights to Chairgun from Hawke.

[rsterne]

Well, I now have an Android tablet and have purchased Strelok Pro.... It is installed but I have no idea how it functions.... I'm going to have to look for an online manual I guess.... Don't be too hard on me, this is the first "smartphone-like" device I have ever laid hands on, I'm still trying to even figure out scrolling, etc.etc….  …. The tablet is a 7" RCA with detachable keyboard (Walmart for $78 CDN), so with Strelok I'm only out about a C-note.... I just need time to play with it, and figure out how to navigate the menus and features....

Bob

[Kinetic45^]

Joining the modern age!
Careful, the handiness of tablets and smartphones can not so good you in (hummm, I had a variation of suction here and it edited it to "not so good") if you explore the capabilities and get the right apps... or is that wrong apps.
I very carefully do not download games, hence can't find out accidentally I'm addicted to one of the stupid things.  Only practical tools like compasses and map programs, levels, conversion tools, etc.

Good luck on a Strelok manual, if you find one let me know where.  I just tried things hit or miss to educate myself on it and wonder if I've missed parts.