Just for fun I shoved one of these down the pipe of a clean barrel. Took little to no pressure at all to send it to the bottom and out the breech. It was actually easier than shoving a Shockwave down a clean barrel. Noticed on the bullet that the only rifling marks were on the bottom 1/8 inch of the bullet. I have a couple of pictures I tried to upload but it told me the file was too large. So how do you put pictures on here and I'll put them on.