Assuming you mean the X bullet, yes I have. Used them to take a few smaller deer. They penetrated better than any other 22 bullet I had tried and still expanded and did a lot of damage. They all exited, which I prefer in a hunting round. I stopped using the 22's before the Nosler partition was offered in that caliber but I did use the Trophy Bonded Bearclaw (if I have the name right). They held together very well but their expanded diameter reduced penetration. I suspect the partition may be comprable to the X bullet in penetration but again I have not tried them.