Drum beat! Performance tips!
 

Hi to all, I thought I'd start this thread so tips, hints, help and suggestions can be readily found and used to enhance your drum shooting experience! I have two for starters! Feel free to chime in anytime... I appreciate the help!

1) When loading the drum with the loading tool in place, I insert the first round, and lever it home past the hold open detent relief teardrop. And, while still holding the handle down, I insert the next round, while slowly letting the handle back up, you will feel the cartridge snap into position with the loading tool nose securely in the extractor grove of the cartridge! I do the same with each additional round. If you're not carful to do this, the loading tool nose will impinge on the casing and a dent, and most likely a jam will occur? :eek:... Very critical when you get to round 20 or more... The correct loading technique will save wear and tear on the mag catch notch as well....

2) after becoming familiar with your drum... take the cover off and degrease and clean. Then using 3M 320 wet or dry sand paper, sand every bit of interior surface, inside the cover shell, and on the exposed surface of the spring cup, AND, up the tube as well... I use a 3M scotch bright pad, on a cleaning rod with a wire brush, to hold the sandpaper. And I also finish with just the scotch bright (extra fine!).. re-grease, and put it all back together! have fun!....til...lat'r....GT:jumper:

NOTE: some like to load the first one or two by hand to easily defeat the hold open detent.. I think this is even correct for the original, but I have modified the hold open detent teardrop so the round can be loaded with the loader from round one! Both are correct, just make sure, when using the loader you are in the extractor groove as described above when loading rounds under pressure!!! ...

Was there a big difference between both version of drum. Why 2? TKS

Eric,
if you are asking about original drums, there are really more than 2 versions if one counts the changes.

As far as I know there has been only the one type of Numrich drum that GT is working on.

If you have a historic drum question there is a good book :"The Luger snail drum and other accessories for the artillery model luger" by Sayre you would enjoy, or maybe start a thread on German drums/trommel magazines and variations. JMHO.

I believe you have one or two yourself you could post pictures of to start

My Hero
 

I found some family portraits for you! Thank You I do have the book and both are included! Of note No Stock!! Difference balance??? Thank You George My Mentor!!!

Looks like a Mac 5!!

Original drum question!
 

Hi to all, you know I have repaired a few original drums and the problems are sometimes similar, but feeding issues are usually less prevalent on originals, even with less mainspring poundage???
My question is, are the interiors of an original Bing drum blued or in the white?... The acid bath, and subsequent black oxide, may be a bigger problem then previously thought?.... Let me know if you have an original and want to peak inside?.... Best to all, til....lat'r.....GT:cheers:

I guess its not as easy as opening a can of tuna fish!

GT , alls my bing are in the white inside , I own seven of them .

Bingo! Thanks Patrice...
 

Thank Patrice! That's it! It has to be!!!....:thumbup:.... Believe me, It seems as if the new drums actually come alive after a serious bout with the sandpaper and blending cloth... So, from this point on, I'm going to sand and buff each interior..... arrrrgggggeeee, more labor!!! :eek:... I suggest to all, more of the same! Best to all, til....lat'r......GT
Thanks again Patrice!!!!

Some dried yellow fat lines the inside on all I open , so never see rust inside

So just a question, with talk of limiting high capacity magazines swirling around, would these Trommelmags be banned or would they fall under the "relics and curios" exception section of the ATF's list?

And I thought it was a Belly Dancing thread! Move those hips to the drum!!

I'll stick with belly dancing!!! Allot safer!

banned
 

Hi Herkaiser, In general, it depends on where you live, and the restrictions in place state by state.... Arizona is a very gun friendly state and no restrictions of any kind that I'm aware of on mag capacity.. but Cal. Col. New York just to name a few, would certainly regard them as tools of Satan!!!!! And take you to task... :eek:.... You will probably enter the legal justice system if your caught with one?... :eek:... best to you, til...lat'r...GT:cheers:

One never knows what "would" happen; at least I don't since I bought my crystal ball.:confused:

If they were banned (Thompson and other hi-cap mags have been in different locations), they could be :
-exempted
-grandfathered
-included, or
-modified to hold less than "x" rounds.:thumbup:

Good Question! I own both!!

Here one just open for you:
/

wow!!!

I just noticed this album of photos by Kabar2, it shows how he enlarged slightly the mag well and worked on the mag tube to get his original Bing drum to fit his artillery luger.

This is precisely the problem with some combinations of repro drums and their mag well fit.

Thanks Kabar2!

http://forum.lugerforum.com/album.ph...pictureid=3526

drum interior!
 

In Patrice's picture, you can clearly see the spot weld shadows on the inside of the drum shell around the circumference, as light blue spots.. If you feel them on the originals, they are probably smooth.. On the repro drums, you can fee some slight roughness by using the bullet nose of a cartridge and sliding it around the drum interior same as if it were under pressure? You'll feel little grabs and catches as you go! These must be sanded out to 320 or better, W/D and then buffed, polished to ultra fine... bullets should slide/slip, around like on, "hammered owl snot" :eek:... which must be pretty slick as it is invisible?... :eek:... at least I've never seen it? BTW, polish the interior complete and up the tube while your looking at it.... :thumbup:.... til....lat'r....GT...:cheers:

Wanted to share an issue that I caused with my drum to save anybody else the trouble of learning the hard way.

Before I even attempted to load the drum I tore it down as per the instructions manual.

While reassembling I apparently over tightened the small screw at the base of the mag tube.
Went to the range with 25 rounds in the drum, the first 18 or so shot fine.
Then as the follower was starting to enter the mag tube it locked up.

Once I was home I was able to back the screw off a tad and the mag feeds all 32 rounds on a bench test X2.

Also I was able to feel the bind when loading. Based off my extremely limited experience, if the rounds are hard going in they will not be properly fed out.

So to summarize, don't over tighten the small screw at the base of the mag tube.

follower drag!
 

Hi Miles, thanks for the report, and it is little tips and tricks that make the drums such a challenge! I will suggest that you again dissemble the drum and polish the whole length of the magazine tube with 320 W/D sand paper and a Scotch bright blending pad? Or 0000 steel wool! The slicker it is, the better it will work! polish the drum bowl / cup, both parts, and follower ends as well (need a fine polish grit? 600+), and re-grease! It should be slipper like a bearing anywhere the rounds run! BTW, I have up-graded the drum specs to use 124 grain bullets if available? I'm now testing American Eagle 124 9mm ball.. with excellent results so far... Best to all, til....lat'....GT:cheers:

When will your next batch of modified drums make it to Numrich? TH

Drum availability...
 

Hi Thomas, 15 more units should just be there now? Another 15 units to send end of next week! (most likely arrive second week in April?...:cheers:.... ) best to all, til....lat'r....GT :cheers:

Were either drum used on any other German firearm?

For My Hero G.T.
 

Who has always been there for me!

The trommelmagazin were able to be used in any Luger (in theory, as we have seen each one requires a bit of work to make one work) and they were also used by the Germans in their Bergmann MP 18 Sub-machinegun. 1 million of them were made but they are still incredibly sought after items.

Our Thompson had a 100 round 45cal~ I have one and can hardly pick it up loaded!

Awesome, Reminds me of our BAR~https://en.wikipedia.org/wiki/MP_18