Originally Posted by Danny96211
I just bought a freak barrel off of someone on here for 30$ and it comes with a .693 insert. I heard that thats a huge overbore, but what are the downsides to overboring or hugely overboring? Any upsides to it?
Overbore- Slightly tighter shot spread, poorer efficiency- usually ~10% less shots
Bore Matched- Average shot spread, average efficiency
Underbore- Slightly larger shot spread, best efficiency- ~ 10% more shots
With an extreme overbore, I found no real diffference other than efficiency gets progressively worse. Not an issue for me as I don't need more air than whats necessary for the amont of paint I carry.
You can see the difference between bore sizes in my video here: http://www.youtube.com/watch?v=r7LMQLSfiDY