brucey is right on. They are intended for taking down steel targets out to 200 meters with a handgun. International Handgun Metallic Silhouette Association (IHMSA) was very popular back in the mid 80's. It is still shot in quite a few places. A 10" Thompson Contender in .357 or .357 Maximum could handle the 55 lb rams at 200 meters. The Ruger Blackhawk could handle heavy loads as well as Dan Wesson's. Too many of them would eventually make a S&W rattle. There was also the NRA Hunters Pistol Silhouette, with half size targets out to 100 yards. Normally loaded .357 were more than sufficient for them. I still have several boxes of loads in my stash loaded with the JTC-SIL bullets.
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H Richard
SWCA1967 SWHF244
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