Tried the federal, winchester and the corlok. I had best luck with the corelok, but kept gettting flyers. I would get 2 touching and one 3" high. I only tried 10 shots. Same thing with the Winchesters.

Went back to the 1oz copper solids 2 3/4", and back to 2" groups at 100 yards.

I really wanted the faster work too. I wanted to extend my range to 150 yards.