LPG gass bottles

[kcdusk]

A few questions on LPG gas bottles.

1) do they have these in Europe and the USA? Would they be useful in that you could scrounge them and use them as portable fuel?

2) if you shot one, say a 9 litre or 2 gallon normal size bbq gas bottle, how big would the explosion really be (ie not movie effect!)? What stats would you give it? C:# and B:# ???