Myth? - shorter barrel = use faster powder?

^^^ Very nice ted talk indeed. You are a man of patience and virtue. Unlike me - haha

That is good reading ^ thank you

^ testify

Wow @Pommy you have mostly restored my faith in this forum with that answer.
I even saved it to a .txt document so I can refer to it in the future :thumbsup:

And Pommy you wrote your great reply 7 hours ago and there are no signs of the 'assumption' that a few members made that 'it will be ripped apart anyway" (so what is the use of posting...)

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Originally Posted by 199p

Disagree i think its more of a cant be fucked because you give a long in depth answer and someone will just rip it apart anyway.

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But to keep this post on friendly terms ....I appreciated your self-deprecating funny comment @Tentman :D

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Originally Posted by Tentman

^^^ Very nice ted talk indeed. You are a man of patience and virtue. Unlike me - haha

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Originally Posted by Hermitage

But a 'muzzle blast' according to Wikipedia is an explosive shockwave created at the muzzle of a firearm by gasses created by the burnt powder.

"In addition to the blast itself, some of the gases' energy is also released as light energy, known as a muzzle flash".

So all the powder must be burnt inside the muzzle. The muzzle blast/fireball is light from the gasses.... not burning powder.

https://en.wikipedia.org/wiki/Muzzle_blast

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The hot gases may include CO and H2 which will ignite on contact with atmospheric oxygen, you might need a VERY long barrel for gases to exit below their ignition temperature.

But speaking of fast shotgun powders, I have some cans of Hi-Skor 700-X. Does anyone know data on such for plinking loads in a .308/.303?

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Originally Posted by Tentman

If you take the trouble to download and install GRT (Gordons Reloading Tool, its free) you will truly learn something. It will take you an evening. I'm a two finger typist and i don't have an evening to spare. Besides this half the forum who don't think science can give any answers will jump on and try to contradict any specific answer given.

Try a parable, you know the one about teach a man to fish versus give him a fish . . . .

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@Tentman Is that the one where you give him fish and he eats for a day, Teach a man to fish and you get rid of him for the weekends.........Or as my wife would say..Teach a man to fish and he will want to buy a bigger boat...

Does GRT work on android? I tried dowloading it to my phone but it can't seem to get it to run.
If not, is there a goid android equivalent?

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Originally Posted by poodle

Does GRT work on android? I tried dowloading it to my phone but it can't seem to get it to run.
If not, is there a goid android equivalent?

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I use it on my desktop.
I'd be surprised if it worked on a phone. Quickload definitely doesn't and came on a CD.

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Originally Posted by poodle

Does GRT work on android? I tried dowloading it to my phone but it can't seem to get it to run.
If not, is there a goid android equivalent?

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I've got the free 'strelok' on the fone. Basic but goes good.

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Originally Posted by kidmac42

I've got the free 'strelok' on the fone. Basic but goes good.

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GRT isn't a drop chart type app its an application that calculates muzzle velocity based on case design powder charge seating depth projectile etc.

It's for reloading

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Originally Posted by Moa Hunter

How fast is the powder used for 22 rimfire ? Have read somewhere that max velocity is reached very quickly. Pistols would be the same ? So perhaps extrapolating that info would give you your answer Hermitage ?

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A consideration with (weak) rimfire casings might be to have peak pressure over and done with before the case-supporting bolt face moves too far back.