interesting concept. if not too much of a bother, could you send a photo of your homemade setup? I like the idea andI have so many calibers and very few times need to pull a bullet. Therefore; I decided years ago they aren't worth it. I simply take the die out of my RCBS press, put the cartridge in the holder and lower the lever to push the cartridge up through the threaded hole for the die. Then I take a pair of pliers that I coated the ends with a rubber grip compound and grab the bullet. Then I raise the press arm gently and since the pliers will not go through that die hole it has never failed to pull any caliber bullet, most without so much as a scratch.