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Old June 24, 2012, 06:43 PM   #1
Marco Califo
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Join Date: April 4, 2011
Location: LA
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Barrel heat

I shot around 100 rounds max load 55 gr fmj 28.5 gr 844 powder WSR primers. [this load is published in TM 43-0001-27] The barrel got very hot and stayed hot after each 10 rounds or so. When I worked up this load, I shot as many rounds as today, but did not have a heat issue. Today with the hot barrel, accuracy was off. Once it cooled, and I cleaned the barrel to kill time, it was accurate again until it got hot again.
So can I assume this load is causing the heat?
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Old June 24, 2012, 06:50 PM   #2
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Not enough info for a good answer, BUT yes. Your load caused heat. Wether it is a shotgun, pistol or rifle you are going to get heat. Ambient temp is a big factor and rate of fire is a biggy.The volumn of powder is a huge factor.
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Old June 24, 2012, 07:03 PM   #3
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55 gr fmj 28.5 gr 844 powder
That load seems pretty stout to me since 844 is about the equivalent to H335. I've been loading around 25.5 for 55gr FMJs without heat issues anyway.
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Old June 24, 2012, 07:13 PM   #4
Sure Shot Mc Gee
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Barrel heat.

Powder causing >Yup.
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223 , barrel , heat

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