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Signs of excess pressure

scsims
I loaded some new brass in my 243 with 65gr vmax over 41 gr of varget. I had no signs of pressure. I used the same cases wich are now fire formed to load some more and now I'm getting shiny spot on the bottom of the brass. I tryed lowering the charge 1 grain and setting the bullet a little deeper and I'm still getting the same signs. I load 95 gr bt over IMR 4831 with no problem.

Any body have any ideas of what the problem is?
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Comments

10 comments

Date Votes
  • richbug
    What rifle? where exactly is the mark? What does the primer look like?(any primer flow?) how noes the bolt open?(smoothly or does it stick?) a 65 gr bullet on 41 grs of varget should be perfectly safe... about a starting load. I am using a 70grainer with more powder.

    My border collie is smarter than your honor student.
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  • scsims
    The gun is a Remington VLS, The primers look fine It's just a shiny mark that on the bottom where it reads 243 win it also on some of them it looks a little smashed. Just don't understand why this load isn't working properly in my rifle. The bolt opens normal.
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  • Permanently deleted user
    Could that shiny mark just be from the bolt chambering and extracting the shell??? If there is no primer flow, I would say that the load is not hot...but there are many here who know a LOT more than I do [:)]

    Eric
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  • scsims
    My other load with 95 gr Nosler bt over doesn't have this problem.
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  • richbug
    Sounds like a burr or imperfection on the bolt face, and not a pressure sign. the pressure generally goes down when using fireformed brass and neck sizing only. don't shorten up the loads too much as this will raise pressure. I would go with it, but thats me.

    My border collie is smarter than your honor student.
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  • scsims
    If that was the case wouldn't it show up on all cases from different loads?
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  • Bert H.
    scsims...

    I agree with richbug & ECC... unless you are seeing some deformation of the primers, it isn't a pressure related problem. Don't have a clue why you aren't seeing the same shiny spot on all the different loads though[?]

    Bert H.

    Real Men use a SINGLE-SHOT!
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  • jonk
    Shooting mainly military surplus guns, if I worried about every shiny spot, cracked case neck, etc., I would never get any shooting done. If you don't have any problem with extraction or primers, I really wouldn't worry at all but that is me.

    "...hit your enemy in the belly, and kick him when he is down, and boil his prisoners in oil- if you take any- and torture his women and children. Then people will keep clear of you..." -Admiral of the Fleet Lord Fisher, speaking at the Hague Peace Conf
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  • rordog
    If your primer pockets stay tight after 3 or 4 loadings, your load is should be alright. How do your loaded rounds chamber? If you feel a little resistance when you close the bolt, that could be when you get the "shiny" spot.
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  • scsims
    rordog, your wright when I chamber a load that I have fired before it is a little tight shutting the bolt. When I remove it there is another shiny mark. Why does it do this? Is it a problem? I only neck resize for accuracy, since this is the only gun I will be shooting them in. If I do a full resize will it take care of the problem? But I really don't know why you would need to full length resize if I'm useing it in the same gun. Weird!
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