Description Caliber conversion kits include everything needed to connect the X-10 Bullet Feeder Collator (sold separately) to the X-10 Progressive Reloading Press. Kits include a caliber-specific bullet collator plate, bullet feed and shuttle assembly, and a micrometer adjustable seating die. The bullet feed system is integrated seamlessly into the X-10 Tool Head to feed and seat bullets in the same station.