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Archived [ARCHIVED THREAD] - How many rounds need to go through an upper before headspacing becomes an issue?
Posted: 9/11/2005 9:39:45 PM EDT
Let's say you have a brand new upper and have installed a non-chrome bolt set, and hypothetically for whatever reason decide to replace it with a chrome set. How many rounds would have had to go through the upper before you would need to worry about checking the headspacing?

Link Posted: 9/11/2005 11:42:25 PM EDT
[#1]
A million
Link Posted: 9/12/2005 4:44:02 AM EDT
[#2]
Actually, David_Hineline is close.  Its actually just over a million.

Link Posted: 9/12/2005 5:31:27 AM EDT
[#3]
One million is BS. It is a function of throat erosion and the enlargement or lengthening of the chamber caused by excess heat. The fatser you shoot the faster it erodes. Shoot slow and it will last longer. Charles the Gunsmith.

Link Posted: 9/12/2005 5:34:21 AM EDT
[#4]
20-30k depending on use, then I'd start checking on a semifrequent basis.
Link Posted: 9/12/2005 6:19:05 AM EDT
[#5]
depends on if you shoot wolf ammo
Link Posted: 9/12/2005 6:27:00 AM EDT
[#6]
Quoted:
20-30k depending on use, then I'd start checking on a semifrequent basis.


So the actual upper receiver minus barrel is really uneffected by that? Its the throat of the barrel only?

Link Posted: 9/12/2005 6:32:48 AM EDT
[#7]
yep.
Link Posted: 9/12/2005 6:39:28 AM EDT
[#8]
Quoted:
A million


+ 1,000,000
Archived [ARCHIVED THREAD] - How many rounds need to go through an upper before headspacing becomes an issue?
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