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<blockquote data-quote="fly2cast" data-source="post: 273104" data-attributes="member: 656">I have a 6mm bolt action and reload my own ammo.&nbsp; I don't do a lot of reloading but I believe I know mostly what I'm doing.&nbsp; For the last several years I have been using a recipe that works for my gun and haven't changed it.&nbsp; I went out to sight in my rifle a couple of weeks ago and my groups were terrible.&nbsp; I thought maybe I had did something wrong during the reloading process.&nbsp; I reloaded a new batch with brand new powder and primers and being very careful to make sure everything was performed correctly and accurately.&nbsp; The groups were again terrible.&nbsp; Like maybe a 3 inch group at 100 yards.&nbsp; I then noticed that some casings were denting and I believe that accuracy and the case denting are related problems.&nbsp; However, I have no idea what might be causing the cases to dent.&nbsp; I've never noticed this in any of the years before.&nbsp; I'm using 39 grains of IMR 4350 and a 100 grain bullet and large rifle primers.[ATTACH]38879[/ATTACH]Any ideas?</blockquote>

[QUOTE="fly2cast, post: 273104, member: 656"] I have a 6mm bolt action and reload my own ammo. I don't do a lot of reloading but I believe I know mostly what I'm doing. For the last several years I have been using a recipe that works for my gun and haven't changed it. I went out to sight in my rifle a couple of weeks ago and my groups were terrible. I thought maybe I had did something wrong during the reloading process. I reloaded a new batch with brand new powder and primers and being very careful to make sure everything was performed correctly and accurately. The groups were again terrible. Like maybe a 3 inch group at 100 yards. I then noticed that some casings were denting and I believe that accuracy and the case denting are related problems. However, I have no idea what might be causing the cases to dent. I've never noticed this in any of the years before. I'm using 39 grains of IMR 4350 and a 100 grain bullet and large rifle primers. [ATTACH=CONFIG]38879._xfImport[/ATTACH] Any ideas? [/QUOTE]

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