Thought you all might be interested in some recent shooting result. I have always known that me AA S400 XTRA FAC shot flat but I had never really taken the time to document it. Bellow are my results compared to those predicted by an unnamed ballistics software. The pellet was the CP .177 10.5 grain and my S400 was set at full power which yields an average of 980 FPS for 22.4 ft lbs.

Yards POI Ballistic Software Results
10 0 0
20 +3/8 +.89
30 +3/4 +1.34
40 0 +1.25
50 -1/4 + .65
60 -1 1/8 - .52
70 -3 9/16 -2.38

To be fair airgun ballistics are extremely complex and I got the software free online. While I am not expecting perfection it would be nice to have something that was a little closer to real world results. Has anyone used a ballistic program that accurately predicted the path of their pellet in real world testing? If so what program was it?


Darrell

I was using it before HAWK scope became part.

If you put the proper data in, you will be very, very impressed with calculated results vs real world.

That said ( I love that line ) nothing beats mapping your own junk... and I mean nothing!

LL

I used to call this "DOING YOUR HOMEWORK"

LL

Thanks for the info LL. Where can a guy get his hands of Chairgun software?

Totally agree on the necessity of doing your home work.

I already knew that my S400 shot flat out to 50 yards and have limited my shot to that until now. I recently have had the desire to stretch things out a bit which is what prompted me to chart its trajectory.

Unfortunately chart rifle trajectories and patterning shotguns is nearly a lost art, IMO true sportsman do both. I worked in a guns shop for years and you wouldnt believe the number of guys that would come in the night before deer season and buy a new slug gun have a scope mounted and bore sighted and felt they were ready to go hunting in the morning. I was often tempted to purposely screw up the bore sighting so badly that I knew they would miss cleanly and wouldnt wound a deer do to there laziness or ignorance which ever the case may be. However bore sighting a slug gun is so unreliable I didnt really feel the need.

Ok I am off my soap box now. Sorry!!!!


Darrell

That is all we airgunners are made of, our own homework, knowing when that far range shot starts to fall off at an unreliable rate. If you've never done your homework you can't know that.

Airgunners are in general more knowledgeable about ballistics and trajectory.

LL

http://www.chairgun.com/

LL