Found this clip on another site: "The XM40HA is a 135 gr. HST that I chrono'd at 1130 fps. Respectable, but not screaming along like CorBon. According to one site where it can be found, it was developed for the Border Patrol and their HK 2000's. Don't know what happened, since it's my understanding they now use the Rem. JHP." Wanna kill these ads? We can help!