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Joined: May 2003
Posts: 742
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Campfire Regular
Joined: May 2003
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In theory or proofed, if everything is identical with a load with the exception of the number of times the brass has been fired, will the pressure increase as the brass is fired, or will the pressure decrease?
Thank you for your insight.
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Joined: Mar 2007
Posts: 12,703 Likes: 12
Campfire Outfitter
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Campfire Outfitter
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My WAG would be no clinical significance. Variance less than meaningful one way or another.
“When Tyranny becomes Law, Rebellion becomes Duty”
Colossians 3:17 (New King James Version)
"And whatever you do in word or deed, do all in the name of the Lord Jesus, giving thanks to God the Father through Him."
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Joined: Mar 2018
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Don't think there's enough difference between new and fired brass to tell a difference. If there is a difference it's awfully slim. In that case it would matter if full length resizing vs neck sizing which probably causes less than 1% difference in case capacity
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Joined: Aug 2015
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Campfire Outfitter
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Campfire Outfitter
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Identical load, identical pressure within normal variance.
Let's Go Brandon! FJB
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Joined: Aug 2015
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Campfire Outfitter
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Campfire Outfitter
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On initial fire forming the velocity will be reduced since some of the pressure is being used to expand the brass to fit the chamber. The overall pressure would be the same you're just using some of it to work the brass.
Let's Go Brandon! FJB
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Joined: May 2003
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Thank you all for your responses.
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