Bore Diameter of 30 Cal DWM / 1925

ptrickamp222 · 11-02-2010, 10:34 PM

I just purchased a 1925 DWM 30 Cal luger and have not slugged the barrel. I learned that it was a 1925 on this site by the serial #. What is the normal bore diameter of a mid 20's DWM???? My first post shows Pic's. I am going to buy bullets and shot a lot of cast lead in my 45's and 9mm and would like to do the same for this 30 Cal. Just bought a new magazine and dies to use. Any info would be great, Thanks!!! I want to get the cast at least .001 over the bore diameter.

MFC · 11-02-2010, 11:33 PM

The bullet is 7.65mm. I'm not sure about the bore.

nukem556 · 11-03-2010, 07:13 AM

.310 cast should be about right....maybe .311..I think groove dia on .30 luger is .309-.3095

Sieger · 11-04-2010, 02:13 AM

Quote:

Originally Posted by Rick W.

If you are particular, the slugging of said particular barrel will tell you what you want to know. Anything else is conjecture.

Hi:

I agree with you completely.

By the way, the original 7.65 Parabellum round, as loaded by DWM, had a .307 diameter bullet! This was a shock to me, but I measured two bullets.

Sieger

ptrickamp222 · 11-04-2010, 08:22 PM

I've never slugged a barrel. I read that the bore should .309 to .3095. In the Lyman manual it shows to slug from the front of the barrel. What is the best way to slug??? I read of getting fishing weights close to barrel size. What do you pro's use??? I do have a set of digital calipers for measure. I need to know the easiest place to find pure lead around that size and what you use to push down the barrel.....Thanks!!!! Probably a wood dowl??? or use the cleaning rod........ your wisdom is needed.

DavidJayUden · 11-04-2010, 10:08 PM

I believe that Brownells gunsmith supply sells a product just for slugging the barrel but the name escapes me at the moment. Call them in the morning. They do have a tech staff that can help you if need be.
dju

Ron Smith · 11-05-2010, 08:38 AM

I've used a .311-.312 soft cast bullets to slug several .30 Lugers. I clamp the barrel in a vise padded with leather, oil the bullet and tap it through from the chamber end with a dowel or an old section of an aluminum .22 cleaning rod. Never had a problem.

Ron

ptrickamp222 · 11-09-2010, 10:41 PM

Thanks, that is what I was thinking but using oil is a great idea!But now where to find a few .311 or 312 slugs????? What if I can only find fishing weights......Has anyone done this and did it work OK????? Thanks for any input!!!

11-02-2010, 10:34 PM	#1
ptrickamp222 User Join Date: Oct 2010 Posts: 60 Thanks: 0 Thanked 1 Time in 1 Post	Bore Diameter of 30 Cal DWM / 1925 I just purchased a 1925 DWM 30 Cal luger and have not slugged the barrel. I learned that it was a 1925 on this site by the serial #. What is the normal bore diameter of a mid 20's DWM???? My first post shows Pic's. I am going to buy bullets and shot a lot of cast lead in my 45's and 9mm and would like to do the same for this 30 Cal. Just bought a new magazine and dies to use. Any info would be great, Thanks!!! I want to get the cast at least .001 over the bore diameter.

11-02-2010, 11:33 PM	#2
MFC User Join Date: Sep 2006 Location: Louisiana Posts: 1,237 Thanks: 183 Thanked 281 Times in 162 Posts	The bullet is 7.65mm. I'm not sure about the bore. __________________ Mike C.

11-04-2010, 08:22 PM	#5
ptrickamp222 User Join Date: Oct 2010 Posts: 60 Thanks: 0 Thanked 1 Time in 1 Post	Slugging barrel I've never slugged a barrel. I read that the bore should .309 to .3095. In the Lyman manual it shows to slug from the front of the barrel. What is the best way to slug??? I read of getting fishing weights close to barrel size. What do you pro's use??? I do have a set of digital calipers for measure. I need to know the easiest place to find pure lead around that size and what you use to push down the barrel.....Thanks!!!! Probably a wood dowl??? or use the cleaning rod........ your wisdom is needed.

11-05-2010, 08:38 AM	#7
Ron Smith User Join Date: Feb 2004 Location: Orygun Posts: 4,243 Thanks: 118 Thanked 245 Times in 150 Posts	I've used a .311-.312 soft cast bullets to slug several .30 Lugers. I clamp the barrel in a vise padded with leather, oil the bullet and tap it through from the chamber end with a dowel or an old section of an aluminum .22 cleaning rod. Never had a problem. Ron __________________ I Still Need DWM side plate #49... if anyone runs across a nice one. What ~Rudyard Kipling~ said...

11-09-2010, 10:41 PM	#8
ptrickamp222 User Join Date: Oct 2010 Posts: 60 Thanks: 0 Thanked 1 Time in 1 Post	Slugging Barrel Thanks, that is what I was thinking but using oil is a great idea!But now where to find a few .311 or 312 slugs????? What if I can only find fishing weights......Has anyone done this and did it work OK????? Thanks for any input!!!

11-03-2010, 07:13 AM	#3
nukem556 User Join Date: Jul 2010 Location: Irmo, SC Posts: 625 Thanks: 35 Thanked 168 Times in 107 Posts	.310 cast should be about right....maybe .311..I think groove dia on .30 luger is .309-.3095

11-04-2010, 10:08 PM	#6
DavidJayUden Patron LugerForum Patron Join Date: Nov 2008 Posts: 4,047 Thanks: 578 Thanked 1,414 Times in 887 Posts	I believe that Brownells gunsmith supply sells a product just for slugging the barrel but the name escapes me at the moment. Call them in the morning. They do have a tech staff that can help you if need be. dju