I have just "collected" my first Ideal 310 Tool in 30-06, and it came with a No. 329 Bullet Seating Screw designed for a Jacketed bullet. Well, it doesn't fit any of the old jacketed bullets that I have stacked on top of my reloading bench, but it does happen to fit my RCBS 30-180-SP lead projectile. My question is, is there any way to figure out what Bullet Seating Screws will fit the various lead projectile molds that I have for other makes besides Lyman/Ideal? I discovered in my research that the numbers on the Lyman/Ideal bullet seating screw refer to the last three digits of their bullet casting mold numbers. Do all of you just compare the pictures of Lyman molds with the molds that you have from other manufacturers and buy a bullet seating screw with that number to see if it will fit?