For my G20 with 5.15" extended barrel, I use a Bianchi military issue flap holster for the M9.  Fits perfect and is great for range or woods.

Great information guys, thanks again for your replies

Thanks Redline.  I appreciate the response

I just bought a G20 that looks unfired.  The fired cases in the envelope that came with the gun are dated 2005.  I checked Glock's web site and several forums and could not find the information I am looking for so I am trying here.

What is the story with the lead bullets in a glock barrel?  Are there problems when just shooting a few rounds or is it shooting many rounds with out cleaning the barrel.

I load cast bullets for my 40 S&W guns and would like to load the same bullet for my G20.  Not screaming hi speed loads, but for something like 40 S&W +P+ type loads.

Thanks in advance for your advice.