WHY???? Because Pedersoli is in the business to sell guns and make money. Todays shooting public have been brought up to believe that you have to shoot BULLETS and not round balls. So Pedersoli is going to give the public what they want. (Whether it works or not). Pedersoli may be testing a "slug twist" barrel and planning to offer it also, heck why not? The molds are already available!!!!!!!! Doesn't all the other manufacturers offer fast twist barrels for sabots, minnis' maxis' and what have you???? You (the public) are going to get what you want(whether it works or not!!!!!!!!!)