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Old 01-16-2018, 10:50 AM   #11 (permalink)
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So Sosta made a lvl7 bolt into a lvl10 bolt?
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Old 01-18-2018, 03:05 PM   #12 (permalink)
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I have a few extra bolts.
figure I'll just drill press one of them and try it out for myself.
nothing lost, right?
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Old 01-18-2018, 03:06 PM   #13 (permalink)
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I have a lathe if I can get some free time this weekend Iíll give it a go.


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Old 01-18-2018, 03:20 PM   #14 (permalink)
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The big question is... How did the person get the bolt to vent once it hit an obstruction? If you place something in the way of an unmodified Level 7 bolt, it will either chop right through it, or become stuck, and the pressure in the dump chamber will not be able to be released. I suspect there is a cross hole drilled in the bolt stem, but that will not be an easy task, as placement and diameter make all the difference in the world.

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Old 01-20-2018, 06:02 PM   #15 (permalink)
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I suspect there is a cross hole drilled in the bolt stem
and that may be the case, but would defeat the premise of the mod (a simple hole drilled in a lvl7 stem can make it act like a lvl10).

It is also possible that the much shorter stem on the lvl7 bolt clears the end of the powertube tip and vents the air without going full force until the bolt spring has enough power to push it back over the sear.

Again, I'll give it a try and if a few others do as well, then we'll have some answers.
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Old 01-21-2018, 03:03 AM   #16 (permalink)
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The early Automags used springs in the power tube instead of spacers.
The level 10 bolt pilot is hollow and cross drilled before it is brazed into the outer bolt tube.
Just drilling a hole from the rear on an assembled bolt would do nothing but make it slightly lighter.
A very small hole in the right location must be drilled into the bolt pilot at 90 degrees.
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Old 01-23-2018, 06:33 PM   #17 (permalink)
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at the 35sec mark on the video, does it appear that there is a hole drilled through the wall of the bolt into the stem?

This would support what Smiley and Ty are saying, but is not part of the original proposition.
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Old 01-23-2018, 07:21 PM   #18 (permalink)
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I am unable to see what you are talking about, but it could be there... Can you do a screen capture? I would like a better picture of the location of the hole.

Ty
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Old 01-23-2018, 07:51 PM   #19 (permalink)
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I am unable to see what you are talking about, but it could be there... Can you do a screen capture? I would like a better picture of the location of the hole.

Ty
I'm unable to see anything at that timestamp. However, is it me or does there appear to be a hole at the very end of the powertube at the six o'clock position that's visible at the very beginning of the video?
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Old 01-23-2018, 08:29 PM   #20 (permalink)
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No idea. My video playback doesn't show anything more than the coaxial hole in the stem of the bolt. I am terrible at video, though, so I do not know how to advance it frame by frame to inspect the video carefully.

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