Airsoft Canada - View Single Post - Good way to know if under 400fps with .25s?

m102404 · May 30th, 2011, 13:15

There's no way to know how fast something is going without a chronograph. (even if you rig up speakers and measure impact sounds...you're still doing a chrony)

Either buy one...or use a buddy's...or use a field's chrony.

You'll roughly have to add 40fps to relate what the velocity would be with 0.20's vs. 0.25's. And this only works with AEG guns...you can't relate velocity measurements of different weights with gas guns.

May 30th, 2011, 13:15	#2
m102404 Tys Trader rating Join Date: Apr 2006 Location: Toronto	There's no way to know how fast something is going without a chronograph. (even if you rig up speakers and measure impact sounds...you're still doing a chrony) Either buy one...or use a buddy's...or use a field's chrony. You'll roughly have to add 40fps to relate what the velocity would be with 0.20's vs. 0.25's. And this only works with AEG guns...you can't relate velocity measurements of different weights with gas guns.