10 gauge resized shells will not chamber

[bob weeman]

Chedditte cases will not chamber even after revisiting in mec 600. Press goes all the way to the bottom on the resizing station. They will not chamber either empty or loaded? Some chamber but most do not. 3rd loading for them...maybe 4th for some. They drop in easily. The gun will almost close and it seems like it is rim thickness? Thoughts?

[Rick Losey]

Since my tens seem to vary in chamber size. With the British one being the largest - those actually would not fit in the mec jr resizing station

I bought a MEC super sizer in 10 and run all the empties through that first

Problem solved

[David Holes]

If you look at the rim it will be rounder and not flat as it should be. Each shot deforms it a little each time until it goes to far and will not allow gun to close. I have tried readjusting my mec to flatten this out, but still does not work. The only way I know how to solve is by limiting your reloads to 1 or 2 times. Hope this helps, Dave

[Austin J Hawthorne Jr.]

You might try adjusting your decapping pin, so that it just pushes out the primer without putting to much pressure on the base around the primer pocket.

[John Campbell]

The operative gremlin in Mr. Weeman's predicament is the brand "Cheddite." If he were to switch to Federal hulls, his problem may disappear. Or at least take longer to manifest itself.

[Pete Lester]

I have not tried Cheddite hulls in 10ga. What I do know is Federal is all brass, Remington and Winchester have steel in them. The steel hulls are tough on the resizing rings. I recently changed the resizer ring on my Versamec and I see a big difference. Shells that would not allow me to close guns with tighter chambers than my Parker will now close without problem.

How old/how much use has your 10ga resizing ring seen? If it's a lot or I don't know I would get a new one.

The stand alone Super Sizer works well too, but with the new resizing ring I won't be needing it as much.

http://www.ballisticproducts.com/MEC-Resize-Ring-for-600JR-8465-select-gauge/productinfo/1308465/

PS. I have not seen Federal 10ga hulls available anywhere lately. Remington would be my next choice.

[Jerry Harlow]

Resizing lube helps the resizing rings on the MECs. Otherwise it is metal on metal with shavings. Try some One-Shot sprayed in there every so many shells. Cheddites are made with notoriously thin metal. You have to use a MEC Super-sizer for them.

[bob weeman]

My Mec sizer is new and has had maybe 1000 rounds through it. I will try some lube and I think I will get a super sizer. Chedditte was all I could find but I will switch as soon as I can find some Federal or Remingtons. Thank you all for your help. Greatly appreciated!

[charlie cleveland]

i shot some old peters victor sureshot shells i then reloaded them and i have had the same problems mentioned here..they went in gun good before being fired...charlie

[Carvel Whaley]

I have been using Cheditte hulls in the short ten with no issues, I do run them through a MEC super sizer each time before reloading. Some have been reloaded 4 or 5 times. Carvel

[Paul Harm]

Precision Reloading has Rem 10ga for 44.95/100. Not cheap, but I've used them for years.
Go here https://www.precisionreloading.com/ I've never used a lub on my resizing ring, and think it would take quite a bit to wear it out. You can see if the punch is set too low and bowing the shell with a simple straight edge. Good luck.

[Pete Lester]

Precision Reloading has Rem 10ga for 44.95/100. Not cheap, but I've used them for years.
Go here https://www.precisionreloading.com/ I've never used a lub on my resizing ring, and think it would take quite a bit to wear it out. You can see if the punch is set too low and bowing the shell with a simple straight edge. Good luck.

I bought a used 10ga Versamec several years ago. My resizing ring was worn out. The loader was set up for 3.5" shells when I got it, nobody reloads a lot of 3.5" 10ga. I load 300 to 500 short ten shells a year. The steel head hulls, Remington and Winchester, are hard on them. Only a couple of thousands of wear on it can cause problems. Resizing rings are cheap. With the new ring I see a lot of shiny brass on the heads of shells I am loading, before I did not. Shells sized with the new ring will chamber in my Remington and Lefever 10 bores where before they would not close if they had been fired in my Parker.

[Craig Larter]

I load for 10ga Parker and 10ga LC Smith. The Remington rim diameter is larger by about .010" versus the Federal hulls. I have found the Smith's will not close on the Remington shells because the recessed rim in the Smith chamber is cut to a smaller diameter versus my Parker. So I can use Federals or Remingtons in my Parker but only Federal in my Smith's. After many years of loading for 10ga I find the Federal hulls more durable especially at the mouth of the hull.

[Jerry Harlow]

I've never used a lub on my resizing ring, and think it would take quite a bit to wear it out. .

Paul,

I agree that it would take quite a bit to wear out a resizing ring but with hulls that give you problems and even with the hulls using steel, a spray of lube like One-Shot up inside the ring makes them as smooth as butter, and one can tell the difference for quite a few hulls before doing it again. I just tried it again to see the difference on a sizer using a ring, and it is like night and day in the smoothness during resizing, especially on the upstroke when the shell is ejected. If you use it on rifle brass cases in carbide dies, then it makes sense to me when it is steel on steel. Just a helpful tip I thought with problem shells.

My automatic guns shooting the Cheddites (Hevi-Metal shells) dent the metal heads as if they were run over by a car, since they are paper-thin.

[Pete Lester]

Not my words. "MEC Resize Ring for 600JR

The resize ring is a wear item located on the depriming station of the MEC 600 Junior reloaders. After repeated use, this part will wear and break or it may not fully resize hulls down to proper specs. For best resizing performance, this part should be replaced every so often, depending upon your reloading volume. If you are having trouble with resizing your hulls, you may want to use the MEC SuperSizer. This is a terrific alternative to the 600JR’s resize ring."

It's a six dollar part, if you are having trouble with guns not closing on reloaded shells and you don't have a MEC Super Sizer or Size Master it could be an inexpensive solution to the problem. As I said before I was surprised that mine was worn, but again we are talking a couple thousandths that can make a difference.

[John Campbell]

Gentlemen:
Here are the SAAMI shotshell specs. Page 17 for 10-bore. If the chamber or resize ring involved are off, then it may prove enlightening.

http://saami.org/specifications_and_information/publications/download/Z299-2_ANSI-SAAMI_Shotshell.pdf#page=8

Alternatively, a switch to Federal cases will obviate any problems.

[Pete Lester]

Gentlemen:
Here are the SAAMI shotshell specs. Page 17 for 10-bore. If the chamber or resize ring involved are off, then it may prove enlightening.

http://saami.org/specifications_and_information/publications/download/Z299-2_ANSI-SAAMI_Shotshell.pdf#page=8

Alternatively, a switch to Federal cases will obviate any problems.

Federal 10ga hulls are the best, at the present time where have you found them available for purchase?

[John Campbell]

Pete, et al:
Those that I've used I found at Ballistic Products. They currently seem to have them in stock:

http://www.ballisticproducts.com/All-Federal-Hulls/products/633/

[Rick Losey]

Pete, et al:
Those that I've used I found at Ballistic Products. They currently seem to have them in stock:

http://www.ballisticproducts.com/All-Federal-Hulls/products/633/

federal 10's ?? ballistic is almost always out of stock- you have to keep checking and grab them when you can


OR - make friends with a bunch of goose hunters - and get them once fired

[Pete Lester]

Pete, et al:
Those that I've used I found at Ballistic Products. They currently seem to have them in stock:

http://www.ballisticproducts.com/All-Federal-Hulls/products/633/

They must have got some in and then sold out in the last hour.

[William Davis]

My MEC 600 was bending rims on Cheddite hulls. Lot of pressure needed to size. Remington or Federal no problem. Little Imperial size wax cured it. Design of the sizing ring is not all that good either are the Cheddites. Reducing friction fixed it.

Longer term and for me a better solution is size and Prime on my Ponsness Warren 375. Knock the primed hull out with a fitted Delrin rod. Then finish the load on the MEC. Fact is for short 10 the MEC is a poor sizer good crimper PW good sizer poor crimper. Separate MEC sizer would do the same thing.

William

[Carl G. Bachhuber]

MEC sent me one of their first SuperSizers to fix a similar problem. I was using a mix of Winchester, Federal and Remington cases in my Mag10 auto. The rim thickness would grow along with head diameter. I adjusted the collet until I got a case that would chamber. When the Sizemaster presses came out I got one and have not had any more sizing problems.
C.G.B.

[Pete Lester]

I bought my first short ten, Parker NH in 2009 and along with it a used but like new VersaMec 10ga loader in the box. I never had a problem with reloads with Federal, Remington and Winchester hulls.

Then I got my second short 10, a Remington 1894. I would have occasional problems with the gun almost closing but not quite with some reloads. I blamed it on tight chambers.

Then I got my third short 10, a Lefever, even tighter chambers, the gun could be hard to close on many reloaded shells.

Then I got a 10ga collet for my MEC Supersizer. When I adjusted it properly all guns would function as they should with all reloads.

This winter as part of a larger order I bought a new 10ga resizing ring for the Versamec. I noticed on the very first reload there was more resistance, and some new shiny brass on a Remington hull.

All reloads done on the Versamec with the new resizing ring will now chamber perfectly in all three guns.

I shoot and reload around 500+ or - short ten shells a year. I shoot hulls until they wear out, Federals often crack down the side, the rest are gone when a piece in the crimp area is missing.

Moral of the story, if having a problem chambering reloaded shells when using a MEC 600 or Versamec, start with changing the resizing ring, they are less than $6.

[Rick Losey]

Good advice Pete

I had to go to the super sizer because of the English short short ten. That chamber is enough oversized that hulls fired in it are a hair too big to even start in the mec 600

So since I needed the super sizer any way. May as well use it on them all

[Paul Harm]

I'm a little cheaper than Pete. When my 10's start being bad on the end I cut it down to 2 3/4 or even 2 5/8. They still shoot just fine. Only problem is sorting them so I still get a good crimp. I'm probably the luckiest guy in the world when it comes to 10ga hulls. A friend cleans up at a DNR range and gives me any 10ga hulls he picks up. It's around a 100 a year - Rem, Win, and Fed hulls. I buy him a water or pop over at the club. I almost feel guilty. I have the Super Sizer with 12 and 10ga collets but haven't had a problem resizing with my 10ga Jr yet.

[scott kittredge]

[QUOTE=Paul Harm;212917]I'm a little cheaper than Pete.:biglaugh::biglaugh::biglaugh:

[William Davis]

All sorts of cheddite problems crop up. I have a 16 G Remington M 31 that would drop the 2nd shell out of the bottom under the carrier instead of on top once or twice in a box of Herters Cheddite shells. Took it apart half a dozen times worked on the shell stop and carrier every possible way no cure. Then ran my Remington hull reloads through with no problems.

Measured a fresh box of Cheddite, Rims smaller than Remington's and not very consistent.

William

[Paul Harm]

Would frugal have been a better word ? Let's just say I hate throwing away 10ga hulls. I get them down to 2 1/2" if necessary. Look kind of cool being so big around and short. One of my Parker lifters had 2 5/8" chambers. Still use those shells in my other guns.

[bob weeman]

Further analysis has found that some of the rim diameters are larger than others. Those that fit measure 9.025 those that do not are 9.03. Hope the Remingtons I have ordered are 9.025! Thanks to all for your input!

[bob weeman]

Bad decimal point..... .9025 closes.... .9030 will not.....super sizer does not seem to help but still adjusting....