I am loading 450#2 with 88gr of RL 15 and 5 grains of dacron as filler...
On come of the necks of the empty shell casings I am gettin an elongated indentation of some of the casings...
Looks like when you resize with to much lub it causes a dent in casing...

Any ideas???


Mike

Mike
I assume this is happening when you are shooting. If so, is it always in the same barrel? Is it only in the neck or does it extend down into the body of the case.
Is the indented area blackened with powder residue?
It could be caused by the neck of the case not expanding fast enough to seal off the chamber area.
You might try increasing the crimp, which would build pressure a slight amount, thus helping the neck to expand a little bit more.
Also what is the length of your cases?

quote:

Originally posted by retreever:
I am loading 450#2 with 88gr of RL 15 and 5 grains of dacron as filler...
On come of the necks of the empty shell casings I am gettin an elongated indentation of some of the casings...
Looks like when you resize with to much lub it causes a dent in casing...

Any ideas???


Mike

Mike, I don't think I've ever seen that condition outside the loading room! I don't have a clue! Sorry

And are they perhaps too low a pressure. Perhaps a wee bit more powder to force the seal NE 450 #2 is describing. This is assuming no signs of pressure.
I have had this with too light a load, especially with big cases and fast powders that require filler.
Frank

Micheal

What velocity are you getting with those loads (if they are chronographed)?

Bertram or Horneber brass?

Also as mentioned are you finding it is occurring with only one barrel or both?

AS for Chrono I will wait till it warms up and the length don't remember but will measure and increase the crimp..

It is only on the case neck will try to get a photo and send post it....
Bertram brass

Mike

the casing is .2400 under max length...I am seating and crimping the woodleighs at the uper end of the cannalure on the bullets...
Should I increase the dacron to 8grs...


Mike

Mike
Does this occur in both bbls?
After you fire a round will a bullet go into the neck easily or is there still a bit of ctimp present. Check for both bbls.

Tony ,

will check it out and I am not sure which barrel..The next time I shoot I will know..

Mike

There was a discussion of this phenomenon over on NitroExpress.com, complete with a photo.

Click here.

M...I have the exact dents but they are in the neck of the casings..
Thanks for the photo,,,


Mike

The gun is an antique, right?

It is obviously haunted by one of its former owners.

Negative, this is a Champlin Famars...made I believe in the late sixties or early seventies..

Mike

Mike
When you resize the cases does the dent dissapear?

George Casewll of Champlin Arms had the FAMAS rifles made in 450 No2 because it is his favorite double rifle cartridge. Mine too.

Yes they do..I am waiting for some warmer weather before I go shooting again it is 10degrees and we had 30 mile an hour winds...

Did you liik at the photo from the other forum they look just like it but on neck..

Mike

Yes i saw the photo. It must be caused by the neck of the case not expanding and sealing off the chamber neck quick enough. I would not worry about it too much unless you see evidence of erosion on the chamber neck.
Nect time you shoot see if it is on the same place on the neck of the brass each time it occures.
On fluted chambered guns like H&K's powder gas travels @ 3/4's down the case as a design of the rifle. I have fired THOUSANDS of rounds in H&K's with no chamber problems.

How heavy of a crimp are you using? I assume you are compressing you filler and using Federal 215 Magnum primers>

retreever:

Based on your description of the problem...I can tell you I had the exact same issue several months ago with a 470 NE.

No one around my area had every seen a problem like this nor did anyone else I spoke with at the time. I sent samples of the brass off to the manufacturer along with my "chronographed results"..those results were in line with published velocities for the 47O NE. The responce I got back from the manufacturer was inconclusive, however, they replaced the brass and I have not had the problem since.

I may be that your brass is a bit "hard" around the neck...after the testing done by the manufacturer this is most likely the problem... given my chronographed results were in-line.

Could be your "load" is not reaching pressure needed...cold temps. could also be affecting the problem....along with hard brass...