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Joined: 28 Aug 2014 Posts: 924 Location: Eastern Tennessee

This week I have a new problem. Previously I had reloaded 2 boxes of win hulls that fed through my model 12 49/50 times. Once when ejecting unloaded shells to move to another property a hull would not eject (I mean the bolt would not slide back at so stuck in locked position). Just chaulked it up 2 a reload that was not round. Shot in my bps no problem. Well this week I reloaded 2 boxes of rgl and a box of federals. For some reason I decided to run them through model 12 to test them. Not 1 of them would extract. I tested factory versions of all 3 with no problems. I tested winy again without trouble. I then played with crimp and resizing stations seeking a solution with no success. I have to figure its either crimp, resizing, or extractor. Any ideas?

*Last edited by skeettx on Fri Nov 21, 2014 6:00 pm; edited 1 time in total*

What press were you using?

If a collet MEC sizer, was it set to minimal?

Were these hulls fired in gun besides the model 12 before you reloaded them?

Thanks
Mike

How many times have you loaded those hulls?

Joined: 28 Aug 2014 Posts: 924 Location: Eastern Tennessee

Feds and rgl are 1 reloads shot through 311a or bps
Win are first reloads too, same 2 guns first time.

I am using a mec 600 jr

*Last edited by skeettx on Fri Nov 21, 2014 6:52 pm; edited 1 time in total*

OK, MEC 600JR is a great press.

Do you have the sizing ring adjusted down so it contacts
the press platform without a hull in station 1?

You should see no gap and there even might be a slight
bit of tension what will be taken up when you size a hull.

Mike

Joined: 28 Aug 2014 Posts: 924 Location: Eastern Tennessee

I have the ring setup so a penny will slide under the gap but not a nickel.

Good!! was getting my Texan and Mec mixed up!!

The Texan size rings have a cut out for the rim to reshape
the rim, the Mec does not.
So you have it properly adjusted.

Only other thing I can see is to try a MEC SuperSizer.

You know anyone that has one??

Mike

p.s. gotta ask, but already know the answer, you have REALLY cleaned
the chamber and no hint of crud, right!

or use Rem hulls in the Model 12 only and keep them separate from
the other guns Sad

Joined: 28 Aug 2014 Posts: 924 Location: Eastern Tennessee

I'll pull it out tomarrow and clean the gun again to be sure.

My next step will be to shoot some factory of each through the gun and reload them.

It is pretty clear to you it's not the crimp end or the extractor since it works in other guns?

1/16 inch is from Mec under the resizing ring. If you have an inside caliper, measure the chambers. Also you can measure the hulls after resizing. Mine come out at .736 or .737 after resizing.

Joined: 28 Aug 2014 Posts: 924 Location: Eastern Tennessee

I think I figured it out late tonight, although I'm not sure what to make of it. I was wondering why my winny reloads would be different when it came to me. My reloaded winny are all what I would call low brass (having about half the brass of my Feds or rgls). I just so happened to have some winny high brass to reload and sure enough they had same jam issue. Is there anything other than buying all low brass from now on I should consider?

Joined: 03 Sep 2014 Posts: 398 Location: Rochester, MN

I have the very same problem with my 12 gauge guns and my Versa-MEC reloader. Now, I only reload low brass shells in 12 gauge. High brass shells actually get stuck in the depriming-resizing die.

In 1my 16 gauge MEC I have no such issue.

One more suggestion is to check the chamber on the Model 12. I have an older book on gunsmithing that suggests that older guns were developed when shells were made of paper impregnated with wax. Upon firing such shells expanded and deposited a thin layer of wax on the surface of the chamber. This prevented any corrosion in the chamber itself.

Modern cartridges made of plastic do no do that. It is a simple matter to remove the barrel and polish the chamber. I use a 3/8" dowel that I cut a small slit along one end along the axis of the dowel. I place a piece of emery cloth in the slit, lube the chamber with WD-40 and spin the dowel with an electric drill. I usually start with 250 grit and finish with 400 grit.

Joined: 28 Aug 2014 Posts: 924 Location: Eastern Tennessee

Interesting john. I'd be happy to test your wax theory however I would rather use chemicals rather than power tools on the old girl. It's worth noting that she had not been out of the safe in 40 plus years and when I broke it down to clean the gun the material inside was obviously from paper shells. For the mean time I guess I'll stay away from buying Feds and rgls. Not looked at herters cheds yet so I hope the cheap means low brass.

Polish the chamber using a 12ga bronz bore brush in a chordles drill. I use black buffing compound on the brush. to speed things up. Flitz or Symchrome will allso work. I have had the sane problem with almost every 16ga M-12 I have worked on.
This will fix it.

Joined: 28 Aug 2014 Posts: 924 Location: Eastern Tennessee

Well after more testing today it is without a doubt high brass causing the jam. I figure I'll try 1 more solution (already tried wax cleaning, which I might add after some rem oil the rgls fit better but still rough extraction). Would skeettx idea of using collet resizer likely solve this issue? Don't want the new expense but if it prevents limits on my factory options it might be worth it.

Joined: 28 Aug 2014 Posts: 924 Location: Eastern Tennessee

Thanks bdog I'll give it a try