I have several MEC 9000 one in 28 another in 20 gauge. I also have a Poness Warren 800 in 12 gauge and a P-W Duo 375.
I have loaded many thousands of rounds, but just last week and again tonight when loading for the 20 gauge 7/8oz #8, Claybuster Wad 1078-20, on top of 15.5gr. Universal Clays, I started getting wrinkles ~1/2" above the top of the brass base.
I sacrificed one of the wrinkled cases and cut it open. The wad seemed to be in the correct place inside the case, the powder was of the correct weight, and the crimp was absolutely beautiful. These new HS cases have an inside plastic cup that holds the primer and powder. The exterior wrinkle was at the top of this inside plastic cup. I kind of think the wad is hanging up when it is inserted, loaded, and crimped. The reloader has enough force to push the exterior down, thus creating the wrinkle.
Does anyone know how to prevent this from happening??
I had the same issue on 12 ga with my mec sizemaster
Also you may want to adjust your crimp starter down further to close the case down to below the size of a pencil, and work with your final crimp station, adjusting it up just a bit and playing with the cam function to get the crimp you want.
Edited by southdakbearfan, 2 years ago
OK! I'll look closer at the setup.
Someone at the Lee Kay Center suggested I use a Winchester
Anyone have any comments??
Edited by kickinback, 2 years ago
Start with the top of the outside plate level with the inside metal. Load one and see what happens to the center of the crimp.
Lowering the outside plate squeezes in on the crimp perimeter and closes center holes.
Raising the outside plate lessens the squeeze and removes center swirls.
That cam is a potent adjustment
It's possible to put too much cam on a crimp and have the crimp punch crush or wrinkle the hull above the brass.
Try these adjustment
Edited by Commando, 2 years ago
I have had this happen from time to time. First, increasing
Dont know if you are still having the problem you are having but I have had similar problems with 12ga AA-HS hulls. The solution that I found was to switch wads. I know its hard to believe but the claybuster
In 20 ga I have never experience
I don't know if you have tried this place out or not but they carry Down Range wads http://www
Column height is to high. Something needs to be changed. Powder, wad, or shot. Try taking a few BB's out and see what that does. My bet it is the wad or the shot. I have been loading shot shells for over 44 years. One of the three my friend, one of the three.
Try this link for more info on the 9000G. http://www
Edited by MTCBag, 2 years ago
Yup, I have been loading atleast as long as you have, but this is definitely a problem with the WIN HS three piece hulls. I played around with several wads that had different wad colums such that it would give me the space I needed for the crimp. I reduce my shot quantity as well. I also used IMR PB shotgun powder. It is very bulky and with the correct load would be beyond the ridge of the inner powder cup on the WIN HS hulls. This all would work if I used the old card board overpowder wads and the felt wads to adjust the wad column. NOT!! I like the plastic one piece wads. Now, I did not use the Down Range wads. They were not available where I usually shop, but I know a gunsmith in SLC that sells them out of his mobile range trailer. Now all I have to do is find the next trap shoot and meet up with him...........Oh!!! I forgot I threw out all the WIN HS hulls. Life is too short to screw around that much when Remington STS or Gun Club hulls use the one piece hull like the old single piece yellow 20 ga. WIN hulls which I still have about a 5 gallon bucket full.
Thanks to everyone for responding to my post.