3/4" qev cannon ggdt

[ALIHISGREAT]

could someone please put this throught ggdt i would like to know what length of chamber to put on my 3/4" paintball bolt action.

the barrel will be 1m of 3/4" pvc
the chamber will be 1.5" pvc (i'm guessing around 50cm)
it will use a blowgun piloted 3/4" qev
and there will be no dead space.

thanks.

[veginator]

How about giving more information like the length of your chamber and barrel.

[ALIHISGREAT]

i said that the barrel would be 1m long and the chamber around 50cm but its the chamber length i want to know. and i just realised that i left out that i will use it at 100psi.

[iPaintball]

Any reason you can't run it yourself? Anyway, what is your projectile's mass?

[DYI]

What gas are you using? How can you possibly eliminate all dead space? The projectile would have to be resting against the piston of the QEV.

[ALIHISGREAT]

ok there will be practicaly no dead, space and the projectile mass will be around 3.2g and i will be using air.

i can't put i through myself because i don't have ggdt

[jackssmirkingrevenge]

If noise and pumping isn't a problem and you want maximum power, go ahead and make it as long as the barrel. If not 30 to 50cm will suffice.

[ALIHISGREAT]

yes but i want to know what velocity the cannon will shoot at aswell and how much using a bigger chamber will change that, eg a 50cm chamber compared to a 70cm chamber.