I am casting for glock 19, 20, 23, 27, 29, and 34. The 20 and 29 have kkm barrels all else factory. I am also shooting a smith 629 3" .44 mag with the cylinder throats reamed. My casting alloy is straight clip on wheel weights air cooled. All bored have been slugged and bullets sizes .001" bigger than bore. I have tried tight group as well as longshot powder. I have pulled bullets out of the casing and measured with a micrometer and hey have not been swaged down in size. That is 7 pistols that are all leading on me. What am I doing wrong?
Thanks
zack