Well,all it is is a necked down .22 mag,but supposedly has more energy and velocity. From an article i read in one of my magazines(forgot which one),it is actually supposed to hold up fairly decent in the wind,but i personally cant back this up. If the ballistics are correct compared to the wmr, then it should be a great round for prairie dogs and the like, but probably wouldnt be the best for coyotes and other medium sized varmints. Anyway, you wont see me rushin out to buy one.