The problem with stingers is that the brass is a couple of 1000's of an inch longer than a "standard" .22 case and therecan be a chambering problem. Most after market bbls with "match" chambers won't function with this ammo reliably as the chamber prevents the case from seating properly...it's too long.
Butler Creek bbls advertise that their "match" chambers will shoot these elongated cases which means to me that standard dimension cases certainly have bullet runout before the bullet engraves on the rifiling.
Does this make any sense?