Lyman improved sizing dies now have 90� hole spacing. It�s now easy to lubricate bullets even with today's hard lubricants. Lyman sizing dies also feature a tapered mouth and hardened interior insuring alignment for perfect cylindrical shape. Interior dimensions correspond to suggested diameters for all popular rifle and pistol calibers. Refer to the chart below for proper size. Lyman Top Punches are precisely machined to fit bullet nose shape exactly. This eliminates nose deformation. Refer to Lyman�s bullet mould listing for suggested top punch number. (These are interchangeable with RCBS)