Vid-20220418-wa0011mp4 Page

I cannot play the video to confirm, but I suggest checking the slinging.org forum for the thread matching that attachment name for the exact context, as attachments there often depict experiments with different materials.

Documentation or instructions referenced within the forum attachments, potentially describing the use of a "proper" projectile. VID-20220418-WA0011mp4

Using tightly rolled paper or improvised paper materials for ammo. I cannot play the video to confirm, but

Specific types of paper or cardboard used for making targets. and repairing slings.

"Proper paper" in the context of slinging.org likely refers to:

Based on searches, the file VID-20220418-WA0011.mp4 appears to be a video attachment in the slinging.org forum . This community often discusses creating, using, and repairing slings.