Good day, I've went to purchase some 12 gauge 00 buckshot the other day. I notice that on the shelf they had Federal power shok 00 buck 12 pellets 4.99 for a box of 5 on sale, and there was right next to them Federal vital shok 00 buck 12 pellets for 7.99 ??? Same FPS, PELLETS, Same brand just two different color boxes. Anyone have any thoughts on this besides the price, what makes them different. Thx in advance