I have a Savage 12FV in .223 that shoots the cheapy Winchester 40 gr JHP and the 55gr PSP very well. They are so much cheaper that I haven't shot anything else in it for a few years. I bought a couple of boxes of the premium ammo and braved the snow to go to the range yesterday. My 100 yard groups were OK at 3/4", I was getting 2" at 200. I was blown away when I got a 2 1/4", 5 shot group with the 55 gr Federals, and 2" from the Hornady Varmint Express at the 300 yard mark.
I just might have to treat that gun to a scope upgrade....All I have on it right now is a 5-15X40 Bushnell Legend.
By far my favorite gun!