Barrel Feed Ramp Angle?

DonVoigt · 09-23-2017, 08:59 AM

Quote:

Originally Posted by Kiwi Mark

I like the bull barrel with flats and the front sight for windage. I'm going to mill the rear sight vee sight with 3mm TC end mill to square it off as I
can't see the vee. I'll make the front sight alot higher & file it down at the range until I get the desired results. Before you start to recommend different sights, in New Zealand, we can't import stuff. So I made it. I really appreciate the comments, many thanks.

Be sure to post pictures of the finished barrel and sights, please.

Rick W. · 09-23-2017, 11:02 AM

I have a friend in New Zealand that has told me some about how it is with importing etc, we all hope for better times to come.

OTS sights for the Luger here are pretty scarce here too. I reckon the Marbles #27 was about the last. I see that G.T. is going thru great lengths to help out in the front sight arena for us. Obiviously the old Mauser front is around yet some, but takes a little moding for elevation etc. If you can cut your own dovetailing or make such a ramp, that will open up some other options.

Improved rear sights on the toggle as you know take a beating. Adjustable sights here are mainly(for the very few that do them) modifications of existing sights available. FWIW, I have found over the years that if I got rid of the elevation characteristic of the rear adjustable sight, that durability went up. A lot of homebrew fixed sights attached in various ways, or specialized milling or made up sub-bases for something like the S&W rear or the old Bomar sights appear here from time to time.

Finding a scope mount for the Luger.......well, guess not too many around, I have never seen one that was not out of someone's shop as a one of, type of thing. I was really pleasantly surprised with the ability of the scope on the Luger, but I also realize tis not for everyone. Really shows the real capabilities of a slender tapered 14" barrel in 30 cal. I showed my rendition once here, but will never again.

The beauty of the Luger barrel is that it is not too complex to replicate, probably the most effort is in the integral front sight base if so desired. Slabbed barrels should be fairly easy on the lathe/mill, and keep the barrel in alignment some during recoil.

No hassle intended on my part, my best to you on your project.

Rick W.

G.T. · 09-23-2017, 09:46 PM

Hi guys, actually, I am in agreement with both of the notes by Don and Rick... I think that from a one time practical sense, just about any ramp will do, and it is amazing how close one can come by eye to the correct final angle?... But, I would not be telling the truth if I didn't say that it bothers me more than just a little to see the ramp extend deeper and deeper into the chamber proper as we break edges, throat chamber mouths, and so forth?... On the first range shot, I always inspect the brass for ANY signs of pressure or deformation as a result of possible incorrect chamber dimensions, or relief cuts?... So far so good!
But, I always look down from the top of the barrel to INSURE that the feed ramp does NOT exceed the depth of the extractor cut, actually, I like to see it some what shy of the extractor relief cut... although I also agree, the brass is pretty tolerant of this unsupported area in question?... Thanks to you both for your input, great stuff this Luger puzzle... Best to all, til...lat'r....GT...

Kiwi Mark · 10-21-2017, 11:36 PM

Hi, Finally finished except for the front sight needs to be blued after some range shooting. Barrel ended up at 4 3/4 inches long, for no reason other than that's what happens. You can see that I spent a bit of work milling the front sight lug in the Dividing head, a new and higher front sight. Also a first for me, I made a recoil spring as I can't get one in NZ. I really appreciate another member showing the barrel removal tools and all the great feedback by everyone .

John Sabato · 10-23-2017, 10:28 AM

Quote:

Originally Posted by Kiwi Mark

Also a first for me, I made a recoil spring as I can't get one in NZ.

You can't order a spring from New Zealand? What is the restriction on ordering springs?

09-23-2017, 09:46 PM	#3
G.T. Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: Chandler Arizona Posts: 3,530 Thanks: 1,334 Thanked 3,711 Times in 1,014 Posts	barrel ramp..... Hi guys, actually, I am in agreement with both of the notes by Don and Rick... I think that from a one time practical sense, just about any ramp will do, and it is amazing how close one can come by eye to the correct final angle?... But, I would not be telling the truth if I didn't say that it bothers me more than just a little to see the ramp extend deeper and deeper into the chamber proper as we break edges, throat chamber mouths, and so forth?... On the first range shot, I always inspect the brass for ANY signs of pressure or deformation as a result of possible incorrect chamber dimensions, or relief cuts?... So far so good! But, I always look down from the top of the barrel to INSURE that the feed ramp does NOT exceed the depth of the extractor cut, actually, I like to see it some what shy of the extractor relief cut... although I also agree, the brass is pretty tolerant of this unsupported area in question?... Thanks to you both for your input, great stuff this Luger puzzle... Best to all, til...lat'r....GT...

10-21-2017, 11:36 PM	#4
Kiwi Mark User Join Date: Jan 2017 Posts: 23 Thanks: 0 Thanked 7 Times in 6 Posts	Hi, Finally finished except for the front sight needs to be blued after some range shooting. Barrel ended up at 4 3/4 inches long, for no reason other than that's what happens. You can see that I spent a bit of work milling the front sight lug in the Dividing head, a new and higher front sight. Also a first for me, I made a recoil spring as I can't get one in NZ. I really appreciate another member showing the barrel removal tools and all the great feedback by everyone . Attached Thumbnails

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09-23-2017, 11:02 AM	#2
Rick W. User Join Date: Jun 2002 Posts: 339 Thanks: 81 Thanked 359 Times in 198 Posts	I have a friend in New Zealand that has told me some about how it is with importing etc, we all hope for better times to come. OTS sights for the Luger here are pretty scarce here too. I reckon the Marbles #27 was about the last. I see that G.T. is going thru great lengths to help out in the front sight arena for us. Obiviously the old Mauser front is around yet some, but takes a little moding for elevation etc. If you can cut your own dovetailing or make such a ramp, that will open up some other options. Improved rear sights on the toggle as you know take a beating. Adjustable sights here are mainly(for the very few that do them) modifications of existing sights available. FWIW, I have found over the years that if I got rid of the elevation characteristic of the rear adjustable sight, that durability went up. A lot of homebrew fixed sights attached in various ways, or specialized milling or made up sub-bases for something like the S&W rear or the old Bomar sights appear here from time to time. Finding a scope mount for the Luger.......well, guess not too many around, I have never seen one that was not out of someone's shop as a one of, type of thing. I was really pleasantly surprised with the ability of the scope on the Luger, but I also realize tis not for everyone. Really shows the real capabilities of a slender tapered 14" barrel in 30 cal. I showed my rendition once here, but will never again. The beauty of the Luger barrel is that it is not too complex to replicate, probably the most effort is in the integral front sight base if so desired. Slabbed barrels should be fairly easy on the lathe/mill, and keep the barrel in alignment some during recoil. No hassle intended on my part, my best to you on your project. Rick W.