magazine and fps?

if the magazine(120) is fully charged 260-265 FPS
when shooting FPS gradually increasing
and last 30-40 balls 380-390 FPS
P.S. sorry for my english

First ITS NOT THE MAGAZINE! :S

Check your cylinder and hopup.

disassembly che cilinder, check the silicon grease on the front (piston) side.

shtir wrote:if the magazine(120) is fully charged 260-265 FPS
when shooting FPS gradually increasing
and last 30-40 balls 380-390 FPS
P.S. sorry for my english

your saying "fully charged" makes be think you are talking about a gas blowback magazine...if so this is a CTW only forum...no GBB here.

if not then as previously stated...the magazine has nothing to do with your FPS.

uhmmm but there isn't a magazine that contain 120 rounds in GBBR world.. only 30 or 50.

120 only AEG and PTW/CTW i think so

I also have this problem.
I think its the nozzle being slowed by the pressure from the spring in the fully loaded mag pushing up against the nozzle, if i pull the mag partially down out of the magwell, the fps jumps back to normal.
Could try a stronger spring on the nozzle?

Im sorry, but this makes no sense at all!

Alot of us had out cylinder nozzle heads end up backing off. Re tighten it and toss on some blue loctite

Hi guys,

Is is possible to downgrade Celcius CTW, let say around 250fps?

Thanks