I bought a new SW 629-6 last month. I bought a .430 sizing die for my Lyman 450 before I got the weapon. Didn't measure bore or throats and really don't care. With both Lyman 429421 and Lee 429-240-2R sized .430 it will make all six holes touch at 10 yds. Not a hint of lead in the cylinder or bore. My first S&W and I'm impressed.