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A 10.5" at ~11,000 rounds (Page 3 of 3)
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PSA 10.5 here with less than 100 rounds of all-brass through it. The upper fits a bit loose, and I expect all (purposed rounds) to be under 10 yards, but I shot steel at a bit more for safety. Just in to say it holds up great for a "truck-gun" if I ever have to travel (against my will) to the zombie-zone known as Houston. |
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Fascinating. I have a similar rifle (put together as a budget “truck gun” on a pistol lower). Mine does not have more than 500 rounds through it at this point, and is pretty much intended to be run until it fails. So far it’s rock solid. I put a 3-pos FRT in it, but I mostly shoot semi. I figure that will lower the life expectancy significantly, depending on usage. I’m also not keeping any records, just doing a rough cleaning every once in a while. I need to re-zero, though. I got all swappy playing musical optics and just bore sighted it. |
Not fly enough to be halal....
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Originally Posted By TxRabbitBane: Fascinating. .... I put a 3-pos FRT in it, but I mostly shoot semi. I figure that will lower the life expectancy significantly, depending on usage. .... not as much as you might think. Keep in mind this gun/design was always intended for full auto. Mine had a binary in it for a long time and I would do mag dumps and cook it. Cook it hard, so hot that I had to wear gloves and would just dump water on it to cool it down. I beat the shit out of this gun. it keeps running. WRT to "full auto" usage, I found that it accelerated bolt internal spring wear, but that's about it. Maybe barrel life but 11,000 rounds for a 10.5" BBL in any usage is actually quite good (shorter bbls burn out faster). So basically rebuild your bolt springs and rings every 5000 rounds or so, is about the only increased maintenance need I saw. The gun itself takes it just fine. |
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Geez, engineer doing engineering things? Cool to see these kinds of threads. 11k rounds at a conservative .40 cpr = $4400. Probably took you more time on that deep analysis than it did to shoot 11k rounds. :) May be worth trying a different barrel next time, for comparison/ fun? Criterion, Hodge, DD, Geissele. For that amount of time and ammo invested, an extra couple hundred $ on a barrel is insignificant. |
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Originally Posted By lazyengineer: not as much as you might think. Keep in mind this gun/design was always intended for full auto. Mine had a binary in it for a long time and I would do mag dumps and cook it. Cook it hard, so hot that I had to wear gloves and would just dump water on it to cool it down. I beat the shit out of this gun. it keeps running. WRT to "full auto" usage, I found that it accelerated bolt internal spring wear, but that's about it. Maybe barrel life but 11,000 rounds for a 10.5" BBL in any usage is actually quite good (shorter bbls burn out faster). So basically rebuild your bolt springs and rings every 5000 rounds or so, is about the only increased maintenance need I saw. The gun itself takes it just fine. Originally Posted By lazyengineer: Originally Posted By TxRabbitBane: Fascinating. .... I put a 3-pos FRT in it, but I mostly shoot semi. I figure that will lower the life expectancy significantly, depending on usage. .... not as much as you might think. Keep in mind this gun/design was always intended for full auto. Mine had a binary in it for a long time and I would do mag dumps and cook it. Cook it hard, so hot that I had to wear gloves and would just dump water on it to cool it down. I beat the shit out of this gun. it keeps running. WRT to "full auto" usage, I found that it accelerated bolt internal spring wear, but that's about it. Maybe barrel life but 11,000 rounds for a 10.5" BBL in any usage is actually quite good (shorter bbls burn out faster). So basically rebuild your bolt springs and rings every 5000 rounds or so, is about the only increased maintenance need I saw. The gun itself takes it just fine. *shrug* We’ll see. |
Not fly enough to be halal....
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Originally Posted By machinegunseabee: Have you posted a review anywhere here on the 11.5 upper? Originally Posted By machinegunseabee: Originally Posted By 03RN: I have one of those 10.5s in a pistol build. And one of the fsb 11.5s. They all work fine. Here's a 300 yard group with the 11.5 https://www.ar15.com/media/mediaFiles/433221/1000004691_jpg-3759634.JPG Have you posted a review anywhere here on the 11.5 upper? @machinegunseabee No, sorry for not getting back sooner. Its just their nitride upper. |
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A 10.5" at ~11,000 rounds (Page 3 of 3)
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