SpudFiles

I once made a mini combustion (around a 400ml chamber) using Acrylic for said chamber. It had a fan and used metered Butane, it was quite powerful for it's size. The chamber you are planning on using should be fine for a while, but could change it's mind a blow up in the future.
My cannon was fine but i retired it because i realised as said above that it was a frag grenade waiting to go boom. That and the fan shat itself.

Your chamber seems like it may be Polycarbonate, that would be fine to use.
If it has a bit of give like you said i don't see any reason not to use it. It's only 110mm long and 60mm dia.
Having said that, it is up to the individual to decide what is safe and what is not, after all it's your cannon and heartbeat!

jimy-I wouldn't recommend it. I have seen acrylic used before (like nova said) though but I try to stick to what I know will work.

Found this too-
http://www.spudfiles.com/forums/mapc-50-t4704.html
Im not trying to encourage you to do this, just trying to make sure you dont get hurt.

Novacastrian wrote: ...Your chamber seems like it may be Polycarbonate, that would be fine to use.
If it has a bit of give like you said i don't see any reason not to use it. It's only 110mm long and 60mm dia...

its quite a bit bigger than that. 11CM diameterX 60CM length going into 1M long barrel, Eexternal diameter of 4CM for barrel. or i might use a drainpipe for barrel but theyre 4 times the price.