Drill Question

[Pete Jordan]

I was watching the AAW video and the section with J. Paul Fennel. He showed an air drill for guns to help with hollow forms. Does anyone know where to locate one?
Thanks!

[Mike Ramsey]

Just type "Gun Drill" in Google & it will pull up a bunch of vendors.
Here's one: http://www.sterlinggundrills.com/

[Paul Engle]

pretty expiensive drill bit for sure. I have machined them for a job shop long ago and a .250 to .262 x 8 in long for fine grain castiron was 45$