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Help! My Garand Has Started Denting Cartridge Cases!
I've had my Garand for decades and have been reloading for her for decades. Have been using the same load (168gr BT over 48.5gr 4064) for the past many years with no problems whatsoever, good accuracy, no operating problems. Now all of a sudden she has started denting cases near the neck. There are two types of dents, as shown in the photos, one type in the shoulder, one type below the shoulder. One of the cases has both types of dents. These cases came from my latest range session. Again, no feed or ejection problems, very good accuracy, just nine dented cases out of 40 fired.
Can someone shed light on what would cause this and what I can do to fix it? Also, will these dents fire out next time I fire the round? Thanks in advance for any help.
Lubrication indented or Obturation issues
That may be the possibility to much lube but you would see that after sizing as you have to handle the cases a few times prior to putting the projectile in like, wipe case after sizing, TTL, clean primer pockets, seat new primers, fill with powder & seat bullet you would notice that size dent in one of those steps surely. I would look at the rifle.
I now use Hornady spray on "One Shot" fast and easy, less mess very easy to clean from the cases.
I just read an article about these types of dents and their position fits what was pictured in the article it was saying the cases were not sealing correctly and this was a gas dent so have these cases been cleaned as it looks like as a fired one would show powder residue down the shoulder, it also said light charges can also cause obturation issues due to lower pressures in the chamber
They also stated that you can get this from having oil in the chamber but as you had fired 40 odd or were these in a string earlier on or rather hap hazard during your shoot anyway just a few things thrown out there for you to consider.
Have a read of the article anyway here is the link;
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