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Thread: M16 Clinic upper KABOOM (very pic heavy)

  1. #41
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    Rick,

    15,000 rounds and no visual throat errosion?? That my friend is pretty dang hard for me to grasp!!
    "You cannot invade the mainland United States. There would be a rifle behind each blade of grass."
    Japanese Admiral Yamamoto, 1941




    "A wise man's heart directs him toward the right, but a foolish man's heart directs him toward the left."
    Ecclesiastes 10:2:

  2. #42
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    What can I say, this is the info I'm getting from the smith. What I can add though is the gun is still unbelievably accurate, so it does support what he's telling me.

    R.
    "In the end, it is not about the hardware, it's about the "software". Amateurs talk about hardware (equipment), professionals talk about software (training and mental readiness)" Lt. Col. Dave Grossman. On Combat

  3. #43
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    Wow.. I'm glad the shooter is okay. Props for workin through the problem! Good training tool too. I am amazed that the barrel is okay. Thanks for the photos, and the updates..

  4. #44
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    Quote Originally Posted by rickp View Post
    What can I say, this is the info I'm getting from the smith. What I can add though is the gun is still unbelievably accurate, so it does support what he's telling me.

    R.
    I would love to get a bore scope on that tube rick!! That is pretty amazing....even with the nekid eye, at 15k rounds on a clean bore you should see some sort of 'speckling' right where the rifling starts for at least the first inch or two when holding up to a light source.

    My class iii buddy down here has been praising the lw bbls for some time now for their downrange accuracy. I'm really glad the bbl is OK as it will be interesting to see how long you can ride her before the groups open up.

    Just curious, how long did it take for you to put 15k rounds?? It was a ss bbl too correct, not a chrome lined??
    "You cannot invade the mainland United States. There would be a rifle behind each blade of grass."
    Japanese Admiral Yamamoto, 1941




    "A wise man's heart directs him toward the right, but a foolish man's heart directs him toward the left."
    Ecclesiastes 10:2:

  5. #45
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    Hey Artos,
    It took me about 2.5 years to put those rounds through the gun, and yes I do believe its a stainless barrel.

    As a matter of fact I just spoke to Woody, the guy that runs LW and I ordered another barrel thinking the one I had was bad after the kaboom. Now it's going to just sit there after I put on the gas block, get it finished and croyed.

    I guess there's no doubt that LW makes good barrels but I'm crediting the cryo as the reason the barrel has held up so well.

    If this is an indicator of what cryo can really do, I wonder why more people don't do it.

    R.
    Last edited by rickp; 02-05-10 at 20:06.
    "In the end, it is not about the hardware, it's about the "software". Amateurs talk about hardware (equipment), professionals talk about software (training and mental readiness)" Lt. Col. Dave Grossman. On Combat

  6. #46
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    Quote Originally Posted by Templar View Post
    Glad you weren't hurt.

    After having several firearms KB on me, and watching several others.....I've become an eye pro Nazi.

    Let us know how things shake out.
    you're the guy to ask then...

    do you feel sunglasses with polycarbonate lenses, such as Oakley, are GTG or do you insist on the ANSI rated lenses?
    never push a wrench...

  7. #47
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    Quote Originally Posted by ra2bach View Post
    you're the guy to ask then...

    do you feel sunglasses with polycarbonate lenses, such as Oakley, are GTG or do you insist on the ANSI rated lenses?
    I always thought much of the Oakley line was ANSI rated.

    ETA They do-

    Our pure PLUTONITE® lens material filters out 100% of all UV, and this eyewear meets all ANSI Z87.1 standards for impact protection. It meets the same uncompromising ANSI standards for performance, thanks to Oakley’s HIGH DEFINITION OPTICS® (HDO®).
    Last edited by Luke_Y; 02-06-10 at 12:21.

  8. #48
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    Quote Originally Posted by rickp View Post
    Hey guys,
    I hope I can answer some questions that have come up.
    I was not crimping at all. I was using neck tension produced through the use of a bushing die from Redding. The brass had 1 load in it.
    This is the major change I will implement on my reloading in the future putting some sort of crimp. I did this on the recommendation by a fellow shooter that does A LOT of it.
    I was using H335 powder on a progressive press.

    At a minimum it was a big lesson on reloads, and if it wasn't for the amount that I try and shoot I would be buying my ammo.

    R.
    How much neck tension are you running with your bushing?

    This could have been an underloaded round too. What powder measure are you running? Do you notice problems w/static?

  9. #49
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    Jmart,
    I set it up to use 2-3000 of an inch tension using the 246 redding bushing. What I did not do however was to test that same tension with different brass, and that's on me.

    I spoke to Redding about this and they made a good point. Even with a 246 bushing the decaping plunger might be opening the mouth of the case on the way out undoing what the bushing did. They suggested maybe not using any decaping plunger with the bushings.

    Another buddy also suggested to buff the plunger and reduce its overall size so the plunger doesn't open the mouth as much on the way out. I have to re-test the setup with some of these changes
    I'm using 25.5gr of H335 and that's giving me high 2500fps out of my 10.5". It's probably a bit hotter than normal.

    As with most accidents this could have been prevented. It was a huge lesson learned. I need to pay closer attention to QC and less about mass producing these things so I can shoot more.

    R.
    "In the end, it is not about the hardware, it's about the "software". Amateurs talk about hardware (equipment), professionals talk about software (training and mental readiness)" Lt. Col. Dave Grossman. On Combat

  10. #50
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    Just measure the delta between resized cases and loaded cartridges. If it's .003 then you're OK and you don't need to remove the decapper.

    But I think you're on the right track, a taper crimp die or a Lee FCD would be a good addition to your setup.

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