I have a 223 Predator, had to work on the barrel channel to truly float it,coated the bore with DBC, and I got one of the magazine mods that allows longer COL from another member here on the 'Fire - cotis

Before: [Linked Image]

After: [Linked Image]

I have only about 100 rounds down the tube, but it's easily one of my most accurate rifles. It probably shoots better than I can!