ejector marks

  1. J

    5.56 AR15 (Slight primer cratering regardless of vel./psi)

    I have been getting slight primer cratering (CCI #41 primers), ejector marks/swipes, and an indented ring just inside the rim of the casing using one lower (M&P15) as well as ejector marks/swipes with a second lower (80 percent) with both my uppers (18" B.A. Barreled upper/ 20" WOA SPR barreled...
    • JRBullock1987
    • Thread
    • ar15 ballistic advantage ejector marks ejector swipes m&p15 pressure signs primer cratering reloading woa
    • Replies: 8
    • Forum: Semi-Automatic Rifles
  2. J

    Is my lower causing my brass to look like this?

    I have a 20" woa spr build with an aero precision upper jp fmos bolt. Giessele rail. Oss 7.62 hq qd suppressor. 5d tactical 80% lower and a giessele lpk. I've built my upper twice with 2 different upper receivers. Both aero uppers. And my brass still looks like this with standard milspec...
  3. Max_The_Phoenix

    300 PRC 225 ELD, 220 LRHt Retumbo

    HiGuys I had 2 range trips and did some tests to confirm the results, 100 rounds through the barrel before tests, barrel was cleaned and all the copper and carbon removed, borescoped to make sure there is no copper in there. Brass has been annealed and full length sized and shoulder bump is...
  4. 6.5guys2

    Brand new 22creedmoor pressure problems

    I have a brand new 22 creed proof carbon barrel defiance tenacity action thunderbeast ultra 9cb. I am running alpha brass and was trying to get a load but even while breaking in the barrel I was getting a heavy bolt lift so I just kept backing down the H4350 powder weight from 39gr on a v3 auto...
    • 6.5guys2
    • Thread
    • 22creed 22creedmoor ejector marks pressure reloading
    • Replies: 34
    • Forum: Reloading Depot
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