The Express is the newest pellet from JSB and features the same high quality as the every popular JSB Exact. The weight is slightly lower than the Exacts however and should result in a slightly flatter trajectory in medium powered rifles. The .177 Express weighs in at 7.9 grain and the .22 at 14.3 grain. That means that they are the same weight as the Crosman Premiers but retain a higher energy level at longer distances. These are definitely pellets worth trying in all rifles but especially in medium powered rifles.