I have two Fireballs, a 700 SPS Varmint and a CZ527 Varmint that was rechambered. They both shoot 1/2" MOA.
I also have a Cooper 17 Rem, and I agree with an earlier post that it is awesome also and can be downloaded to equal the Fireball if necessary. I wanted a 17 Hornet, but could not figure where I would use it. In the Prairie dog fields, the Fireball is clearly better with the 25 VMAX. If the 17 Hornet is quieter, that would interest me. I even expermented with downloading the Fireball to 17 Hornet velocities. It was accurate, but I could tell no difference in noise levels. As far as Coyotes, I have taken 4 in the last month with the 17 Fireball at ranges from 50-225yds. All were DRT using the 30g bullets. For me, I think the 17 Fireball is awesome. I can take Prairie dogs out to 450 yds with the 25 VMAX, and smoke Coyotes to 250 with the 30g loads. One caliber covers all my varmint needs. Just my observations...