Gasses

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DOGGER2UK

Gasses

#1 Post by DOGGER2UK »

What is the temperature of the propellant gasses at the muzzle? Specifically Reloader 17 or Vit N140 fired in barrels 660mm and 715 mm long.
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Sim G
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Re: Gasses

#2 Post by Sim G »

Why? I struggle to find the possible need for such information...
In 1978 I was told by my grand dad that the secret to rifle accuracy is, a quality bullet, fired down a quality barrel..... How has that changed?

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Dombo63
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Re: Gasses

#3 Post by Dombo63 »

Googled it for you:
"temperature rifle gas at muzzle"

http://www.navweaps.com/index_tech/tech-090.htm
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Re: Gasses

#4 Post by pe4king »

Dombo63 wrote:Googled it for you:
"temperature rifle gas at muzzle"

http://www.navweaps.com/index_tech/tech-090.htm
It doesn't answer the question though does it, it only explains the process.
Anyway my deduction would be it is "kin hot", and reminds me of an old engineer saying " don't put your finger where you wouldn't put your willy" or words to that effect.
I'm sure the answer is out there somewhere.
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Re: Gasses

#5 Post by Dombo63 »

Here you go, trawling down from that same Google search:

http://www.sciencedirect.com/science/ar ... 8076900201

between 1645K and 2500Kfor a 7.62 round.
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Re: Gasses

#6 Post by meles meles »

Sim G wrote:Why? I struggle to find the possible need for such information...

Maybe he's doing a computational fluid dynamics study into the expansion and cooling of the emergent gases in order to make a better moderator, or contemplating what material best withstands high temperature gas erosion.

Well, that's why we needed to know anyway...
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Sim G
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Re: Gasses

#7 Post by Sim G »

But for only two specific powders, from two specific barrel lengths....? Sounds like a point of diminishing returns....
In 1978 I was told by my grand dad that the secret to rifle accuracy is, a quality bullet, fired down a quality barrel..... How has that changed?

Guns dont kill people. Dads with pretty Daughters do...!
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Re: Gasses

#8 Post by meles meles »

Diminishing returns is what you wants from a moderator, ooman...
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Re: Gasses

#9 Post by Sim G »

meles meles wrote:Diminishing returns is what you wants from a moderator, ooman...

signfunnypost

That raised a smile, Shaving Brush.
In 1978 I was told by my grand dad that the secret to rifle accuracy is, a quality bullet, fired down a quality barrel..... How has that changed?

Guns dont kill people. Dads with pretty Daughters do...!
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DOGGER2UK

Re: Gasses

#10 Post by DOGGER2UK »

The Badger is close…I need to find a high temperature grease to help form a gas seal, with an O ring, in a moderator. However the moderator and muzzle brake are of stainless steel and I have been advised that “copper slip” type high temp lubricants may react with the stainless.
Thanks for the other useful replies ..especially pe4king’s… At least you’ll get a DSO for that Kev!
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