A while back I bought a case of cheap nail gun loads off of eBay for cheap money. I think I got 5 thousand rounds for $40 or something like that. That was back when 22lr was hard to get and I was experimenting with reloading and developing other ways of shooting rim fire. The cartridges I got were 25 Caliber and are just a tiny bit bigger in diameter and the head, than a 22 WMR cases. I figured out how to "attach" bullets to the blanks so they could be fed into a gun without doing it by placing a bullet in then the cartridge, but never did build the gun to shoot them.
That brings me to the present. The charges are still in the closet. I ran across this article on the web and thought BINGO. Now there is a place to use these charges.
It appears that people have drilled out center fire cartridges so the rims of the nail gun cartridges would intersect the very middle of the center fire case, providing a lower powered charge for a "cat sneeze" round. Since there has been a resurgence of interest in rook rifles I thought I would share this info so others could have fun with this:
Cat's Sneeze.pdf