The Velocitors are ballistically superior to the Stingers, especially in the more common 18" and 20" barrels. Stingers use a proprietary powder that burns slower and gets them most velocity out of barrels longer than 22". Although my 10/22 (with a 22" medium contour barrel) can chew dimes out of targets all day at 50 yards with Stingers, I havent' been able to obtain that kind of accuracy with them past that, but I have with the Velocitors. The 25% increase in mass far outweighs the 300 fps difference in velocity. I'd buy them instead.