RT> I was checking out a new (to me) gun store today,  one that I hadn't 
RT> been in before,  and this guy comes in and picks up a "CZ" rifle -- 
RT> in .17 caliber!

RT> Never heard of this one before.  What the guy there told me was that 
RT> they take a .22 magnum and neck it down to use a smaller bullet,  
RT> giving a somewhat flatter trajectory?

I have a copy of "Cartidges of the World", and the only .17 it
lists is a .17 Remington. The case is based on a necked-down .223
Remington. It looks like a varmint cartridge for the Model 700 bolt action
rifle.
* SPITFIRE v3.6 
--- Alexi/Mail 2.02b (#9)