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Some Insight into pressure estimation
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I don't know what the spec's are these days for accuracy and machine guns, but the tracers pretty much follow the same path to my eye. I understand that the -60 had a stellite chamber insert to reduce throat wear, perhaps that helped. As long as they functioned I never had a problem with accuracy in them or the -16. A curious aspect of the Nam era mini-gun is a removable plate near the muzzle that when removed causes a substantial increase in dispersion. Goes from a tight focused stream to a bit of a shotgun pattern spray. Least that's the best way I can describe it. I always thought it odd how little dispersion they had with it installed. How'd they pull that off with 6 barrels that were sorta loose, and unthreaded? We used to chew holes through bunkers roofs with them.
 
Posts: 9647 | Location: Yankeetown, FL | Registered: 31 August 2002Reply With Quote
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Hey AC, Just a "Thank You Note" for being able to disagree with someone like a gentleman. It appears we agree on a good bit but perhaps not everything.

I don't have to totally agree with someone to be able to enjoy a discussion that causes people to "think" and let them make their own choices.

Even better, they can try what we have discussed at little expense and see for themselves if CHE and PRE are of value to them. And hopefully they won't be "PT Barnumed" into wasting their hard earned money on "Fools Gold".

Best of luck to you.
 
Posts: 9920 | Location: Carolinas, USA | Registered: 22 April 2001Reply With Quote
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Hot Core,

I really think that all three of us are more in agreement than we may realize. I just hope no one blows themselves up!

ASS_CLOWN
 
Posts: 1673 | Location: MANY DIFFERENT PLACES | Registered: 14 May 2004Reply With Quote
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DigitalDan,

You weren't alone, and I got the answers to why the M60s cook-off. Robgunbuilder had the same problem and here are his comments as to why (it wasn't just the M60 either).

Quote:

I had cook-offs with my M-16, twice with my M-60( as I remember) and most assuredly in a variety of air cooled Browning 1919's. When your barrel and chamber are glowing red hot ( a dull cherry as I remember) after a few hundred rounds in 30 seconds or so, in the early mornings( 1 to 2 am) in Vietnam cook- offs were a common problem.




ASS_CLOWN
 
Posts: 1673 | Location: MANY DIFFERENT PLACES | Registered: 14 May 2004Reply With Quote
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Thanks. Guess I was going off the deep end after all! I knew they got hot, guess snuggling up to "cherry red" could do that. I think perhaps I was seeing cookoffs associated with defective primers in the ammo. Case goes in the chamber, no spark from the primer, then a bang after it hotted up a bit. Our gunners used the same ammo as supplied for the mini-guns, and it was fairly common to hear one of them stutter a little when a round didn't go off in the firing sequence. Best I can come up with on that one.
 
Posts: 9647 | Location: Yankeetown, FL | Registered: 31 August 2002Reply With Quote
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