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  1. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    😀 very likely. I have inconsistent shoulder bump on 2x fired brass. Some of brass bumped 10/1000” and not able to chamber after loading. So it could be over expanded brass.
  2. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    yes i seated it too deep. Yes. I m loading 83.2 grain of H1000, plan to load under 83 for the future load.
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    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    Thank u all for the help! Learnt a lot from you all. Truly appreciated the kind help and advices from all of u! I read all the thread and tied everything as u guys suggested. The issue resloved. 1. I seated it too deep. I measured CBTO wrong. I used a 1 x fired brass, FL sized and bumped...
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    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    Sized a 2x fired brass, yes it chambers and extracts. Yes agree. It must be the seating issue. I seated it much deeper at 2.68. Still can’t chamber and hard to extract on 2x fired brass.
  5. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    First all, thank u so much for helping for this puzzle. 1. My COAL is 3.51 2. Measurement of CBTO is 2.89 if using once fired brass after FL-resizing, or 2.70 if using once fired brass without FL re-sizing. This is the link for thr method I used. I attached the pic of drilled brass...
  6. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    Agree it is not normal to have loose primer on 2X fired brass. It is Norma Mag brass.
  7. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    This is a brand new action, just fired 40 rounds. I have not fully stripped the bolt and clean it yet. This is the next thing i will do. I have been loading 308 and 6.5 with no issues. But this is the first time I load 300 Norma Mag. The funny thing i noticed that I have no issue with once...
  8. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    Possible. I tried different seating stems, including the seating stem designed for A tip bullet. Still not able to resolve the issue. But there are rounds that I bumped at 2.072 and 2.070, i was able to chambee.
  9. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    Novashooter, Thank u for ur well thoughts and detailed message. 1. I anneal brass every time after firing. 2. Not sticking when extracting sized brass, but I didn’t remove the firing pin. 3. See the pic, this is how I measure my CBTOG
  10. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    Pic 1: left rounds unable to chamber vs right unable to chamber Pic 2, 3: sitting depth 2.807(unable to chamber) vs 2.854 (able to chamber) Pic 4, 5: shoulder depth: 2.068 (unable to chamber) vs 2.067 (able to chamber)
  11. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    Thank u for ur help. I just loaded the pic as following.
  12. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    Left: the round can’t be chambered. Right: comparison of Lt: not able to chamber; right able to chamber. Thank u for ur help!
  13. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    300 Norma Magnum Not belted case
  14. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    Chav0_12, Thank you so much for ur advice. will do in the future load.
  15. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    I don’t not trimming the brass since it is once or twice fired brass. I didn’t chamfering / deburring since it is only 1-2 time firing. I m working on 300 Norma Mag with 250 grain A tip Hornady.
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    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    LAHunter, Thank u for ur message! I didn’t remove the firing pin and plunger. I did measure the CBTO with the once fired brass from same rifle. It is jam at 2.895”. All brasses r FL sized and bumped 2-4/1000” shoulder and base to shoulder measured at 2.071-2.072. Somehow the twice fired...
  17. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    all the brasses are FL sized and base to shoulder distance at 2.072. After loaded the bullet CBTO at 2.85 1. Once fired brass base to shoulder remains at 2.072 2. After loading 230 Grain A tip, somehow Twice fired brass base to shoulder up to 2.075. That is why I can’t chamber the rounds...
  18. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    Thank u Wapitibob for ur suggestion. I was able the chamber the brass. But not able to chamber the loaded rounds on the twice fired brass, no issue with the once fired brass. These brasses are all FL with same shoulder bump and loaded at the same length. I can’t figure it out.
  19. S

    Able to chamber the brass but not able to chamber the rounds on twice fired brass

    Able to chamber the brass but no able to chamber the loaded rounds on twice fired brass 1. FL resized the brass and bumped shoulder 2-4/1000 2. Able to chamber the brass after FL sizing and shoulder bump. 3. Measured the CBTG=2.895 and loaded 230 gr a tip at 2.85. I am able to chamber the...
  20. S

    Loaded rounds wont chamber??

    I have similar issue with 300 Norma Mag brass and need advice. 1. FL resized the brass and bumped shoulder 2-4/1000 2. Able to chamber the brass after FL sizing and shoulder bump. 3. Measured the CBTG=2.895 and loaded 230 gr a tip at 2.85. I am able to chamber the rounds with once fired brass...

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