Fake Gas Block on the 20" 450 B Upper?

[Hoot]

Actually, I was hoping the image would keep this discussion going forward, with you filling in some more of the blanks. Yes, I suspected it was generated by a mathematical modeling program, give how tidy the curve looks. For me, it was thought provoking when I stumbled upon it while reading a thread about using a pigtail gas tube. For me, there are too many variables in this equation to fill in without some givens for a few of them. Perhaps the big picture is beyond explaining without all of the interested parties being versed in fluid dynamics, which I for one am not. I am however captivated by internal ballistics and still capable of absorbing a well worded, metaphor rich explanation, given my broad, but not necessarily deep grasp of the physical sciences.

Whoa, I sound like some government double-speak spinmaster... C'mon Tim, don't make me beg...

Hoot

[wildcatter]

Ok, it's a little late for me to be thinking, but here are somethings I helped generate. It addresses all we've been talking about. For some reason I can't get these to upload, maybe someone else can. I've got computer gremlins going on over here. But the Hoot-Man is at near begging, so here goes. Just a word of caution, these two url's are going to confuse the issue, but they will further explain the complexities..t

http://www.dtic.mil/ndia/2010armament/WednesdayCumberlandPhilipDater.pdf

http://www.armalite.com/images/Tech%20Notes%5CTech%20Note%2048,%20Barrel%20Design,%20Heat,%20and%20Reliability,%20030824%E2%80%A6.pdf

These next two dance all around our issue, but will be inspiring, none-the-less..t

http://www.defensereview.com/the-big-m4-myth-fouling-caused-by-the-direct-impingement-gas-system-makes-the-m4-unreliable/

http://www.defensereview.com/video-failzero-ar-15-upgrade-kit-bolt-carrier-group-and-hammer-upgrade-kit-sand-demo/

And last but not least, Jim Sullivan and I talked about this 15 years ago. It was my suggestion, at the time I had a "Four" column 22mag, magazine, that was 40 rds, it was very short, in fact, pistol length. I hope the below mag will work for us. Just a little Factoid here, Jim was part of a Blue-Ribbon Engineering Team, that tried their best to disprove and excoriate my work on the 45 Professional. This work was part of a Wayne State University Study. They all ended up buying a Pro instead..t

http://www.defensereview.com/dr-exclusive-surefire-60-shot-and-100-shot-ar-ar-15m16-5-56mm-nato-box-magazines-for-infantry-combat-and-tactical-engagements-meet-the-surefire-mag5-60-and-mag5-100-high-capacity-magazines-hcms/

Ok, you wanted Hard Core, you got it. It wonders over a plethora of topics, but they are all related..t

[Hoot]

http://www.dtic.mil/ndia/2010armament/WednesdayCumberlandPhilipDater.pdf
http://www.armalite.com/images/Tech%20Notes%5CTech%20Note%2048,%20Barrel%20Design,%20Heat,%20and%20Reliability,%20030824%E2%80%A6.pdf
(slow to load this morning, but lots of meat and potatoes when it does) Hoot
http://www.defensereview.com/the-big-m4-myth-fouling-caused-by-the-direct-impingement-gas-system-makes-the-m4-unreliable/
http://www.defensereview.com/video-failzero-ar-15-upgrade-kit-bolt-carrier-group-and-hammer-upgrade-kit-sand-demo/
http://www.defensereview.com/dr-exclusive-surefire-60-shot-and-100-shot-ar-ar-15m16-5-56mm-nato-box-magazines-for-infantry-combat-and-tactical-engagements-meet-the-surefire-mag5-60-and-mag5-100-high-capacity-magazines-hcms/

I did not have time to do anything but relink these for T. before getting ready for work...

Thanks T,

Hoot

[artalon]

does any one know what size the barrel is under the gas block, does it stay .740 or does it go to .750 ?

[wildcatter]

does any one know what size the barrel is under the gas block, does it stay .740 or does it go to .750 ?

It Po-Ta-Beez, .750

..t

[MOUNTIN DU]

don't stop now! i'm fixin' to start drillin' again
i thought i had all this figured out when i studied adjustable gas blocks on the piston guns

[Siringo]

What about the adjustable block from JP Rifles. www.jprifles.com

[artalon]

What about the adjustable block from JP Rifles. http://www.jprifles.com

Thanks Siringo, thats what I was looking for, I didnt look real hard tho, I had an idea of how I wanted the gas block to work and wanted to build one my self so I could say "I did this"
I got one coming in case mine dont work as planed

[wildcatter]

What about the adjustable block from JP Rifles. http://www.jprifles.com

Thanks Siringo, thats what I was looking for, I didnt look real hard tho, I had an idea of how I wanted the gas block to work and wanted to build one my self so I could say "I did this"
I got one coming in case mine dont work as planed

Not to be overly nosy, but what is your mission for that gas limiter? Do you plan on having too much gas or do you have too much gas now ? or?

..t

[artalon]

nope, I want to shut it off while I work up a subsonic round, then I work on a sub that works the action