Lyman Doulbe Cavity Cast Bullet Mould producing Lyman Pistol bullet #429838, .430" nominal diameter, 250 grain, Round Nose bullet. Designed by Harry D Frisbee for target shooting. Lyman Top Punch #251, Item#LYM2786704. Approximate Bullet Dimensions: Bullet Length-.773", Bottom of Crimp Groove to Bullet Nose-.426".