Originally Posted by apamburn
I built this, inspired by Melvin. May play with it this weekend. Attachment 62574
Tragically upside down and I dont have a computer handy to fix it :-(
Originally Posted by CCMachinist
When I started doing shells for my revolvers the apparent thing i noticed was the hole size in the cartridge controlled the velocity of my paint.
TL;DR hole size controls how fast balls get spent