The Lock-N-Load Rifle Bullet Feeder is designed for the Lock-N-Load AP reloading press. Sold as a complete unit for 22 caliber bullets, a conversion kit for 30 caliber bullets (item 90510) is also available, giving the reloader the versatility to load the two most popular calibers. Plus, it s compatible with other presses and uses the industry standard 7/8" 14 die threads. Coupled with the Lock-N-Load1 Case Feeder, you ll realize dramatic increases in efficiency and reloading speed up to 50% faster (based on experience and proficiency). The Bullet Feeder Die is case activated; the bullet will only feed upon contact with the case. One station is used to feed, seat and crimp the bullet. Note: The new Rifle Bullet Feeder System must be purchased separately from the Hornady Pistol Bullet Feeder because the hopper systems and die bodies are not compatible. Cast lead bullets cannot be used in either Hornady Bullet Feeder.