Fireball,
I shot a .17 Fireball for several years before buying my .17 Hornet. The difference between them in the field is so small so almost unnoticeable when using the same bullets. I also grew weary of trying to find .17 Fireball brass--or .221 Fireball to be necked down--and when I did find it the price was MUCH higher than .17 Hornet brass. In fact, you can often buy .17 Hornet factory ammo as cheaply as .17 Fireball brass (when Fireball brass can be found) and it's excellent.
My factory 700 in .17 Fireball shot very well, but after shooting my CZ .17 Hornet for a year I sold the 700, partly because the Hornet was even more accurate.
