BB Fps Vs. Weight?

[Ivan]

Can someone with a chronograph run this formula for me?

Values should be the average of 3-4 shots

Please NO speculation. Actual numbers only.

Let's say you have a 425fps rifle. ( using .20 )

I want to know the fps drop with various gram weight bb's for Arizonas' elevation etc


425 fps with .20 bb
=... Fps with .25 bb
=... fps with .28 bb
=... fps with .30 bb


Thanks!

Ivan

[XavierMace]

Is there a reason you don't just use one of the airsoft calculators out there for this?  Because if you are looking for more "scientific" numbers than that, you've got multiple variables you aren't accounting for such as the type of gun used as different types of guns (electric, gas, spring) will produce different scaling.

[Ivan]

I'm just interested in how one rifle will handle each bb weight without changing hopup etc. As long as the tester uses the same rifle on all tests there shouldn't be any variables ( or major ones for arguments sake).

[-MAD- SARGE]

In that case here is an fps calculator. If you need to be more specific than that, you're on your own.

http://www.arniesairsoft.co.uk/?filnavn ... s_calc.htm

[TommyGun]

Try this link:  http://www.airsoftcanada.com/showthread.php?t=49399

As I have stated, I'm on sites all around the world and this should answer your question. =;

[Ivan]

Try this link:  http://www.airsoftcanada.com/showthread.php?t=49399

As I have stated, I'm on sites all around the world and this should answer your question. =;

Exactly what I was looking for!!

Thank you!