The 100gr Grand Slam is still the most accurate bullet to be shot out of my old .243. The "old style" really got my attention out of a factory load. When I thought my 1980's era Ruger was simply a 1 3/4" shooter at best, the Speer factory load changed my mind. Fast-forward about 35 year later, I started to handload for the old rifle and tried all the fancy tipped bullets and some not so fancy. It shot better than before, but once I dropped the "new" 100gr Grand Slam into the mix, that when my groups got to bragging size. On more than one occasion I've covered 3-shot, 100-yard groups with a dime.
