What is the most accurate .17hmr ammo?

I have a marlin model 917vs .17hmr rifle. Ive read about most of the different brands of .17hmr ammo and have heard that Hornady ammo holds the tightest pattern. I have shot spitfire ballistic tip ammo (I forget who makes it, but it looks like a knock-off of hornady's ballistic tip ammo), CCI fmj ammo, and CCI hollow point ammo. Out of the two different brands, CCI ammunition holds the tightest pattern, but from what Ive read, its the least accurate .17hmr ammo. I had my gun sighted in perfectly with the CCI ammunition, but switched over the spitfire ballistic tip ammo hoping to improve accuracy. This was not the case. My gun hates the spitfire ballistic tip ammo. Is the Hornady ballistic tip ammo any better, or should I stay away from ballistic tip ammo and stick with the CCI hollow points? My main goal is accuracy...I want to be able to drive nails from long distances.