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Old 07-20-2012, 06:22 PM   #11
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According to Hodgdons web site you are running .5gr above the starting load. I would load at 50 to 51 gr of 4895 and see how it goes. I would do a ladder test and see about accuracy and case neck sooting.

The sooting around the neck is from a load that is on the lower side of the pressure curve. It is not producing enough pressure in the beginning to expand the brass case neck all the way and seal the chamber. Nothing serious just a little extra time in the cleaner. I would look at varget or IMR 4064. I love 4064 myself.



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Old 07-20-2012, 08:21 PM   #12
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Quote:
Originally Posted by DukesDad View Post
but on further inspection of the cases I am getting a slight amount of primer flattening. Should I scrap the load?
A "slight amount of primer flattening" is normal. Cratered primers are a sign of over pressure.
Here are two cases shot from my US Model of 1917, 30-06.


The cratered primer on the right is, (as I see it,) borderline overpressure. That is a slight cratered primer, I've seen a lot worse.
If your cases are flat on the edges like on the right, but do not show the raised edges of a crater; I would not consider them overpressure.

I'd like to revise the last sentence.
If your cases are flat on the edges like on the right, but do not show the raised edges of a crater, and you find no other overpressure signs; I would not consider them overpressure.

This is a pic of an overpressure case with no cratering. The ejector mark on the face, along with the extremely flattened primer; are the overpressure signs in that instance.
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Last edited by The_Kid; 07-20-2012 at 08:44 PM. Reason: grammar; added info; typo; clarification
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Old 07-20-2012, 08:28 PM   #13
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My first guess is dirty powder. I only load handgun ammo and use Unique Powder because it is pretty universal and I can find several different loads for just about any handgun caliber and bullet weight made. Unique is a very dirty powder though and leaves burn marks on most of my cases. I just figure that's what my tumbler is for.

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