I have two of them, a Dillon and an old one. I find that they work better when I whack them on my anvil. Perhaps it's the angle of the blow(as opposed to the floor). Some cartridges take a couple of whacks.
I've got two kinetic bullet pullers. Some rounds take a LOT of whacks on a concrete block or concrete floor to pull the bullet. Forget it on rifle bullets, for the most part.
I bit the bullet (pun intended) and bought an RCBS collet puller and a bunch of collets for everything I reload. Spent some $$, but boy, was it worth it! Worked slick, half the time and easy recovery of the components.
if your rounds have been seating around for awhile or are pulling military rounds, it help to seat the bullet down (just to break the seal-seat) you only need to move it a fraction 1/32 to 1/16"...Grubby ps if your puller has a hole in the side to dump, you might want to put a masking tape over the hole, it keeps the powder from flying around.
Brian- I would like to hear,read from you stating that you were personally told of a round going off from a kinetic bullet puller.
I believe you made it up like many other comments you have.
And YES, I have used that same brand, kind using both pistol and rifle ammo banging on wood,cement floor, steel without ever a primer going off in hundreds and hundreds of rounds.