Oxygen effect

[gixer1]

Just curious…one of those “I wonder” moments while sitting reloading…

What effect would compression of the air inside a case have on the round? I assume sometimes the bullet or primer seating gets a better seal than other times and I wonder if the air is compressed in some and holding pressure vs others?

And I wonder if you were to load rounds in an inert atmosphere would it have any significant difference to the performance?

Regards,
Gixer

 

[sauer]

Gary..... are you one of em who sits and ask / thinks ....how do blind folk know when their ar5e is clean when they are wiping ?

Paul

 

[gixer1]

Gary..... are you one of em who sits and ask / thinks ....how do blind folk know when their ar5e is clean when they are wiping ?

Paul

They taste their fingers obviously!

 

[JockStalk]

…..when it’s dark…..is the grass still green?

 

[gixer1]

Technically, if one had a better deal and was more pressurised it would effectively be a “turbo charged” round!

 

[tackb]

as i understand it i don't think it would make much difference , the propellant burns without needing an outside oxygen source and pressure runs around 60000psi or 400 bar ish so a few psi of pressure either way won't make a difference , enough pressure to make a difference would burst the case outside the gun or pop the bullet out.

whilst wondering about things i thought every day somewhere in the world somebody does the biggest poo that day , i wonder if it's ever been me?

 

[Malxwal]

…..when it’s dark…..is the grass still green?

Deep man, deep....

 

[gixer1]

I would think the brass could handle a decent pressure before it would deform though…and the action of seating the bullet must increase pressure inside the case…

 

[Bavarianbrit]

I would think the brass could handle a decent pressure before it would deform though…and the action of seating the bullet must increase pressure inside the case…

Perhaps a tiny 0.010 thou hole in the side of the case would cure this

 

[sauer]

How come we have fingertips
But tip toes ?

 

[JockStalk]

Without necessarily pressurising, you could displace any air with nitrous oxide. Though you’d have to be careful not to breathe too much during reloading, or indeed shooting.

It is readily available in those wee cartridges for making whipped cream in catering.

PS I am not in any way advocating trying this

 

[Smellydog]

Isn't this just hot air ...

 

[Smellydog]

Without necessarily pressurising, you could displace any air with nitrous oxide. Though you’d have to be careful not to breathe too much during reloading, or indeed shooting.

It is readily available in those weeks cartridges for making whipped cream in catering.

I wonder if whipped cream makes good case lube!

 

[JockStalk]

I wonder if whipped cream makes good case lube!

Not as good as you’d think

 

[JockStalk]

Just curious…one of those “I wonder” moments while sitting reloading…

What effect would compression of the air inside a case have on the round? I assume sometimes the bullet or primer seating gets a better seal than other times and I wonder if the air is compressed in some and holding pressure vs others?

And I wonder if you were to load rounds in an inert atmosphere would it have any significant difference to the performance?

Regards,
Gixer

Apologies Gary, not taking this thread with the seriousness it was intended.

Back on topic.

Id think very little effect as most of the oxygen for combustion already present in the powder?

Inert atmosphere - probably not going to work so well for the loader, but if that was overcome, maybe a bit of shelf life benefit if dryer air and no oxygen present? But don’t think it would affect combustion noticeably as most of the oxygen present in the powder.

 

[Foxyboy43]

Just curious…one of those “I wonder” moments while sitting reloading…

What effect would compression of the air inside a case have on the round? I assume sometimes the bullet or primer seating gets a better seal than other times and I wonder if the air is compressed in some and holding pressure vs others?

And I wonder if you were to load rounds in an inert atmosphere would it have any significant difference to the performance?

Regards,
Gixer

So that’s why I (only occasionally mind you) miss!
Brilliant!

 

[Mike L]

And I wonder if you were to load rounds in an inert atmosphere would it have any significant difference to the performance?

Regards,
Gixer

Apart from you Keeling over and dying ……… no.

 

[shoppe]

Boys, boys, boys.
Your missing the big question for deep thinking.
What came first?
The chicken or the egg?
Shoppe

 

[Dazb1967]

Boys, boys, boys.
Your missing the big question for deep thinking.
What came first?
The chicken or the egg?
Shoppe

That's an easy one, It was obviously the egg

 

[cjm1066]

This is fascinating, I empty 1/2 the powder out of a cartridge, result more oxygen and greater velocity.

This has been proven with slow rifle powders, you get detonation, the preassure is so great that the action fails.