Lee Bullet Molds are a great choice for reloaders looking for a quality mold at an affordable price. Lee machines their mold blocks from aluminum making them rust resistant. Aluminum molds heat up and cool down faster than iron or steel molds and good bullets can usually be produced only after a few casts. In addition, aluminum blocks are one-third the weight of iron or steel mold blocks offering the bullet caster less fatigue during extended casting sessions. To ensure the best possible bullets, mold block halves are CNC machined for unmatched roundness and size control. Weights given are Lee's weights with suggested alloy; actual weight may vary due to the alloy mixture used. A note from Lee Precision on their bullet molds: Lee Precision does not recommend the use of any spray type mold release products in their bullet molds. The use of such products may result in a build-up of the release product in the bullet mold cavity, reducing the diameter of the bullets cast from the treate...