I'd pass on trying the 180g Winchester Power points. When I got my 10 FCP-HS, that was the only ammo I could find. I couldn't find cases so I bought the ammo to empty it. Three minute 5 shot groups at 100 or 200 yards.

I pulled the bullets out of the rest of the cases and tried 168g hornady and sierra boat tails. Instant sub minute groups. No fancy tricks. 2.8 COL using varget.