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Posted: 6/16/2021 11:45:14 AM EDT
[#1]
4000 rounds would be a realistic number. I’d expect your throat erosion and wallet to be limiting factor.
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Posted: 6/16/2021 12:05:15 PM EDT
[#2]
4K seems like a big number for it and the round being overbore. Throat erosion will be the biggest factor being a semi, you know you're going to be doing some mag dumps!
 Those won't help but they'll sure be fun as hell to do!I would keep an eye on it, checking it about every 500 rounds and comparing it to when it was new and then say at 250, 500, 750 and then 1K. Also keep track of your accuracy, see how much it changes over time and if it gets really bad, see about having the chamber set back rather than rebarreling it. I'm thinking at about 2,500 rounds is where you're going to need to do some thinking about what you want to do, cut the chamber or rebarrel it. Maybe @50cal can give us a little bit better info about it and what he saw from when he worked there. |
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Posted: 6/16/2021 12:15:33 PM EDT
[#3]
More than I can afford. I’d guess under 2k but honestly for what I use them for I’d probably not notice until it got real bad.
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Posted: 6/16/2021 3:21:18 PM EDT
[#4]
Aren't the new ones all chrome lined? Does that help life expectancy? I was hoping for more
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Posted: 6/16/2021 3:38:52 PM EDT
[#5]
We had military guns come in that only had the chrome chamber. They had in excess of 10k down the barrel and had very little throat erosion and still gave 2.5MOA with M33 ball ammo.
One Air Force gun came in that had almost 20k rounds of various types and still had a nice bore. Very little heat checking in the throat and the first inch or so of the lands and grooves. Take care of the barrel and it will last a long time. |
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Posted: 6/16/2021 4:09:04 PM EDT
[#6]
Quote HistoryQuoted: We had military guns come in that only had the chrome chamber. They had in excess of 10k down the barrel and had very little throat erosion and still gave 2.5MOA with M33 ball ammo. One Air Force gun came in that had almost 20k rounds of various types and still had a nice bore. Very little heat checking in the throat and the first inch or so of the lands and grooves. Take care of the barrel and it will last a long time. I feel much better about my purchase now. 
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Posted: 6/16/2021 4:16:08 PM EDT
[#7]
Quote HistoryQuoted: We had military guns come in that only had the chrome chamber. They had in excess of 10k down the barrel and had very little throat erosion and still gave 2.5MOA with M33 ball ammo. One Air Force gun came in that had almost 20k rounds of various types and still had a nice bore. Very little heat checking in the throat and the first inch or so of the lands and grooves. Take care of the barrel and it will last a long time. Name checks out! Always good to read from people who know instead of speculation. |
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Posted: 6/17/2021 9:09:55 AM EDT
[#8]
What are Barrett’s barrels made of? I thought of this when i watched a review video on PGM’s Hecate II’s and they advertise their barrels to be FN made Stellite barrels.
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Posted: 6/17/2021 4:27:48 PM EDT
[#9]
Quote HistoryQuoted: I feel much better about my purchase now. Quote HistoryQuoted: Quoted: We had military guns come in that only had the chrome chamber. They had in excess of 10k down the barrel and had very little throat erosion and still gave 2.5MOA with M33 ball ammo. One Air Force gun came in that had almost 20k rounds of various types and still had a nice bore. Very little heat checking in the throat and the first inch or so of the lands and grooves. Take care of the barrel and it will last a long time. I feel much better about my purchase now. You and me both. |
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Posted: 6/17/2021 4:32:17 PM EDT
[#10]
Quote HistoryQuoted: What are Barrett’s barrels made of? I thought of this when i watched a review video on PGM’s Hecate II’s and they advertise their barrels to be FN made Stellite barrels. Seem to remember they are made from 4140. |
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Posted: 6/29/2021 5:10:54 PM EDT
[#11]
Quote HistoryQuoted: You and me both. Quote HistoryQuoted: Quoted: Quoted: We had military guns come in that only had the chrome chamber. They had in excess of 10k down the barrel and had very little throat erosion and still gave 2.5MOA with M33 ball ammo. One Air Force gun came in that had almost 20k rounds of various types and still had a nice bore. Very little heat checking in the throat and the first inch or so of the lands and grooves. Take care of the barrel and it will last a long time. I feel much better about my purchase now. You and me both. Same here.
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Posted: 7/5/2021 2:32:56 AM EDT
[#12]
I need to shoot mike pappas at deadair silencers an email about his 82a1. He’s shot it so much that he’s had to ream out the front barrel guide in the upper and replace it to tighten up the tolerances again.
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Posted: 7/5/2021 11:51:20 PM EDT
[#13]
Would be interested in his response.
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