I used to load 150 grains of Pyrodex pellets with a 250 grain Barnes Expander MZ. Switched to the 250 Shockwaves last year, and dropped the charge to 130 grains of pellets. According to the chart, I am getting about the same 200 yards impact velocity with either load - due to the Shockwave's more streamlined shape. Either load will shoot around four to six inches at 200 yards. Both are great game getters.