This is an interesting mold for several reasons: 1. Bullets lack grease groove, therefore must be for casting paper patch bullets - which would then be swaged. 2. One cavity has the bottom (bullet nose) bored out as though an attachment could be used to make either a hollow point cavity or an explosive tip cavity using the blank .22 short. No attachments came with the mold, nor does the mold look as though it has been drilled and tapped to attach the necesary parts. So - is this a mold in progress or just a mold made to seperate someone from their cash - it's anybodies guess.