My buddy and I spent quite a bit of time patterning Nickel Plated shot from Ballistics products. Our main concern was improving the patterns in a 20 ga. In the hundreds of patterns we shot in years past, nothing even came close to the #6 NP shot in the 20 ga. He used it last year on pheasants in Kansas and said he had mostly dead in the air kills. That was using a .010 choke.
Actually, the pellets measure out to 6 1/2 in size and are real killers in the 20's. I use 5's with 1 1/8 loads at 1300 fps in a 12 ga. Made some chukar kills to almost 50 yards last season. It not only patterns good, but kills good also.
Lenard