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Messages - Newbergian

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Model HSC Pistol / Re: Mauser HSc Fail To Feed FTF Jamomatic : SOLVED
« on: March 01, 2016, 10:32:20 PM »
Thanks for the Karma vote from some anonymous person. Glad you found the info helpful.

Model HSC Pistol / Mauser HSc Fail To Feed FTF Jamming Problems : SOLVED
« on: February 26, 2016, 07:43:14 PM »
Summary solution without the details:

New magazine springs corrected my problems on two Interarms HSC’s.  Springs came from Wolff Company, PA. Wolff Stock #72263, Mauser HSc XP MAG SPRING +5%.  Package of (3) cost $17.29 plus $4 first class postage. Hope this info helps someone.

Here are the complete details:

I own two Interarms HSc’s purchased at different times from different sources and with widely different serial numbers.

Both have feeding issues. #1 fails to feed most of the time with just about any FMJ ammo. Gun#2 will frequently have issues on one of the last three rounds in a mag.  In both cases the slide fails to close and the bullet is wedged pointing sharply upward in the breach.   I was cautious to not assume that both guns had the same problem even though it looked that way. I am also not a believer in the often heard: “ Polish the feed ramp.” That should never be required unless there is obvious corrosion.

I measured the spring tension exerted by the follower on the last round by holding the magazine upside down on a postal scale and pressing downward until the follower retracted approx one rounds’ distance. The pressure was approx 1lb 10oz measured on three different magazines with original springs. I replaced the springs and the new pressure required to depress the follower was now approx. 3lbs 8oz for each magazine.

Both the old and the new springs are 12 turn springs however the old springs are 4.75” long whereas the new Wolff springs are 5.75” long.

Went to the range and fired 50 rnds through each gun without a single jam. I call that success.

A comment on ammo:
When I was first researching the issue with gun#2  that mostly worked properly, I found my feed problems were the worst, by far, when using Federal American Eagle FMJ ammo.  I noticed that when viewed in profile the American Eagle FMJ is more fully rounded or bull nose shaped versus for example; Armscor or Magtech, both of which fed somewhat better though both still had problems.  After the new springs the American Eagle had no problems BUT I will not use it for this gun in the future because of the apparent greater tendency to FTF.

And finally, the ammo I really wanted to be able to use is a Hard Cast Flat Nose by Underwood BUT it is still a total jam every time even with the new springs. 

Model HSC Pistol / Re: HSC Rear sight adjust?
« on: January 27, 2016, 01:32:25 AM »
That's a nice looking example. Looks like the Interarms version. Is it the American Eagle edition?

Model HSC Pistol / Re: Interarms Mauser HSc Parts Diagram
« on: December 15, 2015, 12:55:37 PM »
You are right, of course, and thank you for that reminder. The mag safety feature was more dominant in my mind and so it got top billing. Your further clarification/correction is better so I revised Note 1 with your wording.

Model HSC Pistol / Re: Happy Holdidays
« on: December 01, 2015, 12:07:20 PM »
RE Green HSc's: And so learning hath taken place and now I know ....Thanks.
So I guess I should have bought that box of ugly green pistols last week .....:-)

Model HSC Pistol / Re: Happy Holdidays
« on: November 30, 2015, 11:53:20 AM »
Is one of those ... gulp... painted green?!

 I have found that my attempts to attach JPG photos that have been modified using Photoshop result in this warning:

Your attachment has failed security checks and cannot be uploaded. Please consult the forum administrator

However, if I save the image as a GIF using the drop-down commands: File, Save For The Web ..., then everything uploads without problem. Its possible that if you use the Save For The Web feature and save as a jpg it will also work. Dunno. Never tried it. The GIF approach worked and I had a solution.

From reading the Simple Machine Forum for this SMF software, this has been a problem for several years. It can be fixed via changes to the background coding but that is often outside the comfort zone of many administrators.

Hope this helps someone.

Thanks for inserting the photo. The problem with your approach is that if I move the file location the image will disappear from the post.

I have been reading the SMF Forum Community support info and it looks like this problem has been around for a couple of years and relates to images that have been modified using Adobe Photoshop (as mine were). I'm going to try and upload again using some different formats and see if I can find a way ....

YEAH! That worked. I converted the file format from jpg to GIF in Adobe Photoshop and it posted fine. That's what I will do in the future.

Model HSC Pistol / Interarms Mauser HSc Parts Diagram
« on: November 27, 2015, 08:52:04 PM »
Post war version diagram for those who may need it. The first two images are from the owners manual and include several errors. Yes, hard to believe but those German fellows made an occasional mistake.

The last image includes annotations to correct the mistakes.

I have found the source of the problem discussed in my other string on the subject. I started this new string so the solution would stand out if someone is searching. Hope no one minds.

My Post war Interarms Mauser HSc slide did not always lock on the last round; not an uncommon problem among handguns and a problem with several possible causes. However, I also noticed that the magazine protruded .04 inches further than it should from the bottom of the grip and tapping the bottom of the magazine would cause a locked open slide to closely unexpectedly = not safe.

The source of the difficulty was a missing part. A part that, I believe, is not found in the prewar HSc design. It is a sleeve through which the magazine catch pin runs and from which the mag catch hangs and pivots. If there is no sleeve, then the mag catch will hang and pivot from the smaller diameter mag catch pin. This improper positioning prevents the catch from fully seating the magazine into the gun and from correctly engaging the magazine safety. I could write more about these details but I won’t. I think you get the picture.  I tried to attach a 800 x 600 180KB jpeg image but I always get a forum error message. If anyone can suggest a fix, I will post a picture.

My Interarms Mauser was recently given to me by a family member that has owned it for 20 years and never fired it. Before that it was owned by another family member for more that 5 years (he doesn’t remember exactly) but he knows he never tinkered with the mag catch. I will never know for sure but I think it is possible that this gun left the factory missing this sleeve because few people ever disassembled their guns to the degree necessary to remove and lose that sleeve. And the gun operated mostly correct….

 This sleeve is not shown in any HSc diagram that I could find online and I must have inspected 30-40 examples. So how did I so brilliantly figure this out? …Bought myself another Interarms HSc in NRA Fine condition and took it apart….One can not have too many HSc’s!  Not only did the new gun have the sleeve installed but it came with the original owner’s manual which shows the sleeve as item #37 Sleeve.

Model HSC Pistol / Re: Interarms HSc Slide Locking & Mag Seating Problems
« on: November 17, 2015, 12:40:06 PM »
jcorl: I'm not sure what a disconnector is but from Warbirds comments I guess I don't have one on the 1970 version...?

RE: New Catch: Got one from Numrich yesterday. It is identical to the one presently in my gun: Has the square studs on either side(see photo in earlier post) that I don't see on photos of WWII versions. These studs butt up against the frame and serve to stop the forward motion of the catch. This is a completely different approach from the WW2 version. On the WW2 version the forward motion is stopped by the heel of the catch in contact with the bottom of the butt frame.

I could grind off the studs and let the heel do the stopping. This would allow the catch to pivot forward further and drive the mag into the gun further and thus engage the mag safety further. BUT that is not the way the gun was designed and I would prefer to understand why this particular gun is not quite 'right'.  Perhaps it has a subtle manufacturing out of tolerance condition in the frame...

I'll figure it out ....

Model HSC Pistol / Re: Interarms HSc Slide Locking & Mag Seating Problems
« on: November 16, 2015, 01:27:48 AM »
Another set of good pictures. Exactly the perfect angle and sequence. You can see that your mag is fully inserted and properly lifting the mag safety, which mine is not doing. So, its either that mag catch or its the mag safety spring is too 'robust'.
I'll figure it out. Thanks for your help.

And don't dump the HSc for the HK4. That plastic piece in the HK4 sounds cheesy at best.

Model HSC Pistol / Re: Interarms HSc Slide Locking & Mag Seating Problems
« on: November 15, 2015, 10:35:58 PM »
Great pictures. Thank you.
Yes, I see how your mag catch position appears the same as mine. However, your mag is fitting flush to the base of the pistol butt vs mine which is extending .040. It is the springy pressure from the mag safety that keeps the mag from seating all the way. It is as if the mag safety spring is too robust.  You see this in my image 8941. The mag safety is barely clearing the trigger catch.
I will see what the new mag catch coming in the mail does for me.
I may just buy another Interarms HSc that does not have this mag problem so I can take it apart !
Thank you again for those excellent photos.

Model HSC Pistol / Re: Interarms HSc Slide Locking & Mag Seating Problems
« on: November 15, 2015, 07:55:33 PM »
Here are 3 photos that will perhaps give you the views you'd like. I shot all my .380 so the casing is all I have :-)
mmm. My image attachments were rejected by the forum for some reason so I put them in the share folder found in my previous post above in this string. (don't know why I couldn't attach (3) images each of which is 1200x800 and 500kb)

Thanks for your continuing interest.


Model HSC Pistol / Re: Interarms HSc Slide Locking & Mag Seating Problems
« on: November 15, 2015, 06:35:42 PM »
VWPIECES: Thanks for taking the time to  reply. I hate mysteries and intend to track this one to ground until it is solved!
My mag is definitely not properly seated (you can see that in some of the photos) and it is not properly engaging the mag safety. This could be, as you suggest, a magazine notch issue or the catch. You might notice the catch has a rectangular stud protruding from both sides and those studs stop the catches forward movement when the studs butt up against the pistol frame.  From what I've seen, these studs are not on pre-war HSc's. Rather, they depend on the heel of the catch to stop the forward motion.  Anyway, I've ordered a new catch and it will be interesting so see what comes in the mail and if it functions any different from the one I've got.
RE HK4: I considered those because they are the same design as the HSc. Alex Seibel of HK ripped off his earlier design from when he was at Mouser. HOWEVER, and this is a big one; the HK has a very lame plastic suppressor in it that is known to fail and who wants that!!?

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