Chairgun???

[whitetail17]

I can't seem to figure this program out. Any good u tube videos to help would be great. 

I shoot jsb .22 beast pellets or monster pellets. They are not on the list. Are the ballistics they same for the “heavys” and just change the grain weight of the pellet and save it?

 

[crittahitta]

whitetail i have a list of pellets and their BC somewhere. I will look and if i find it i will add it here for you.

 

[Gunnertrones]

From top topic:
http://www.airgunnation.com/topic/agn-is-proud-to-share-hams-bc-database/

 

[crittahitta]

JSB Exact Jumbo Monster 25.39 gr BC is 0.039

For a great list go to Hard air magazine and look up Ballistic Coefficients. The list has a lot of pellets.
Also H&N has a great list on their site for their pellets.

I would add a link but I don't know how on my new Mac. 

Good luck hope this helps. Let me know if you find it.

 

[Guest]

Here's two site B/C lists I found; 
http://www.photosbykev.com/wordpress/userfiles/pelletdata.htm
http://chronoconnect.com/pellet-list.html
​You can also go to H&N for the B/C's on all their pellets. Unfortunately, it's the newest versions where weight has changed on some of them. I'll be using them in my Caldwell chronograph app along with weight in grains of the tins I'm using currently. The Caldwell APP defaults @ 1.000. I'll input the actual numbers and compare them.
And I'd love to know when Chairgun plans to upgrade their program to include .25 caliber? Much less, keep up on pellet information all around?

 

[AirgunBill]

I understand wanting to get a good starting point b.c. for setting up your rifle but the best thing you could do is get a chronograph. Since b.c. can vary with the rifles power, barrel length and things like altitude and temperature you will get the most accurate b.c. determining you own. Once you input your figures into Chairgun it will show you b.c.. Plus a chronograph is so valuable in many other aspects of airgun shooting. Bill

 

[whitetail17]

maybe i am confused. i have a chrongraph and have entered my average speeds - is the b/c then automatically calculated?

 

[Guest]

Not by the chronograph, no. My Caldwell deluxe has an Android/Smartphone APP you use to get the numbers. After inputting weight, B/C, altitude and all that. It input a default B/C of 1.000. Now that I have B/C's for the pellets I currently own, I have to reshoot all of them. Then compare all the readouts to before and after. Should prove interesting.
And here's another short set of B/C's I just found today;
http://hardairmagazine.com/ballistic-coefficients/

 

[LDP]

You have to get the velocity from two points during the shot to calculate BC. You can go by tge givin numbers if you find them but the actual BC you are getting will be different than whats listed in a publication.