How to tell if 30 Luger or 9mm Luger

Edward Tinker · 04-22-2016, 12:15 PM

This gets asked a lot, never occurred to me to just take pictures.

The 'check'

Take a normal sized, old fashioned pencil and drop it down the bore. If its farily tight, its 30 Luger (aka 7.65mm Luger) - if it falls easily and there is plenty of room, its 9mm!!

cirelaw · 04-22-2016, 07:04 PM

If it fits it is 7.65mm,

Paladinpainter · 04-27-2016, 08:39 AM

Ed, excellent clear example & pics. If you dont have a pencil handy, another way is to look at the width of the sight base relative to the bore. The 9mm bore is distinctly wider than the sight base; with the .30 it is just a little wider.
John

04-22-2016, 12:15 PM	#1
Edward Tinker Super Moderator Eternal Lifer LugerForum Patron Join Date: Jun 2002 Location: North of Spokane, WA Posts: 15,960 Thanks: 2,062 Thanked 4,591 Times in 2,114 Posts	How to tell if 30 Luger or 9mm Luger This gets asked a lot, never occurred to me to just take pictures. The 'check' Take a normal sized, old fashioned pencil and drop it down the bore. If its farily tight, its 30 Luger (aka 7.65mm Luger) - if it falls easily and there is plenty of room, its 9mm!! Attached Thumbnails __________________ Edward Tinker ************ Co-Author of Police Lugers - Co-Author of Simson Lugers Author of Veteran Bring Backs Vol I, Vol II, Vol III and Vol IV

04-22-2016, 07:04 PM	#2
cirelaw Lifer Lifetime Forum Patron Join Date: Dec 2003 Location: PORT ST LUCIE, FLORIDA Posts: 12,216 Thanks: 6,209 Thanked 4,138 Times in 2,176 Posts	A Simple Way To Tell 7.65mm Or 9mm~~~ If it fits it is 7.65mm, Attached Thumbnails

04-27-2016, 08:39 AM	#3
Paladinpainter User Join Date: Nov 2009 Location: Vermont Posts: 64 Thanks: 14 Thanked 45 Times in 15 Posts	Ed, excellent clear example & pics. If you dont have a pencil handy, another way is to look at the width of the sight base relative to the bore. The 9mm bore is distinctly wider than the sight base; with the .30 it is just a little wider. John