Lee .339 Lube and Size Kit lubricates and sizes cast bullets. also seats and crimps gas checks. Fits any standard 7/8×14 thread reloading press. The fastest and easiest way to lubricate and size cast bullets! Specifications and Features: Standard 7/8×14 threads fit any reloading press Bullets are pushed through the sizing die nose first No special nose punches needed Gas checks automatically seated and crimped in place Sized bullets are captured in the special container Includes a four ounce bottle of Lee Liquid Alox Lube Lubricating Bullets – Place bullets in provided red plastic container and drop in the included Lee Liquid Alox onto the bullets. Gently shake the bullets in an orbital motion to coat the bullets. If they do not coat completely, add a little more lube. Spread the bullets onto waxed paper and let dry overnight. Load at least one bullet into a case and check to be sure it easily chambers in the gun. If it fits tightly, you must resize the bullet before loading. Sizing Bullets – Screw the sizing die into any standard reloading press. Exact depth is not important. Install the bullet punch into the ram. This fits all rams that use standard shell holders. Place the red plastic container with the lubed bullets inside on top of the sizing die. Place bullet on the punch and push the bullet through the die. When 3/4 of the bullets have been loaded, lift the red plastic container off the die. Invert the holder before opening. For rifle and hot pistol loads, it is best to relube the bullets to ensure the sized portion is recoated. NOTES: Lee recommends bullets be relubed after sizing to be sure the sized portion is coated with Alox. All lead bullets must be lubricated, but it is not absolutely necessary to size all case bullets. Bullets must be sized if they are so large that they expand the case too much to freely enter the gun’s chamber. Sizing sometimes helps accuracy by making the bullet uniform in diameter. This ensures uniform start pressure and better accuracy. Gas checks can be installed with this tool. Simply place the gas check on the base of the bullet before sizing.