Gas Bottle & Cartridge

I have a Primus Gas Lamp and 2 burner cooking set. They are both 3/8 connection.

I'd like to know if there is an adaptor that will allow either of the above appliances to be used with a cartridge style bottle. I saw a two shapes of cartridge in K-Mart today, one shaped like a an aerosol can and the other was shorter, squatter and had larger volume.

If so, are there any advantages/disadvantages I should be aware of?? Safety issues?

I'm trying to reduce weight for the roof rack by eliminating a lareg gas bottle.

I looked at a number of brass fittings in K-Mart however I couldn't work out what went where, and there's all those codes etc.

Any help from anyone learned would be very much appreciated.

Cheers