Author Topic: Wow!  (Read 9682 times)

REDLINE

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Re: Wow!
« Reply #15 on: April 07, 2013, 06:20:29 PM »
As long as someone is willing to pay the price then I guess it's worth it.
Gun Control?  Oh yes, the theory that becoming a victim is somehow morally superior to defending yourself & your family.  Makes perfect sense.

gandog56

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Re: Wow!
« Reply #16 on: April 09, 2013, 05:06:48 AM »
Removing the gap entirely (for testing purposes, with no detectable gas leakage) showed no difference or appreciable loss of velocity, and well within the MOE of any chrono.  I've done this with most of my revolvers, and the results are always the same.

I mean I just find that hard to believe. I am NOT calling you a liar, but there almost HAS to be some kind of velocity loss. I mean there can't be a flash there if no gases are escaping.
Some people think I'm paranoid because I have so many guns. With all my guns, what do I have to be paranoid about?

sqlbullet

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Re: Wow!
« Reply #17 on: April 09, 2013, 07:23:47 AM »
This was also documented in a Handloader article in the last few years.  They built up a 1917 S&W to have the same length from the head of the case to the muzzle of the barrel as a 1911.

Depending on the load they two guns traded velocity back and forth.

They then played with the cylinder gap, and with a big enough gap, the revolver started to lose, but it was a far out of spec gap.

End result is that it doesn't take much gas to feel or see at these temps or pressures.  And even though we perceive a bunch of gas leaking there, relative to how much gas there is, what we see isn't that much.

And, 90% of the velocity comes in the first 1" of travel.

Between those two factors, a revolver with a proper cylinder gap is at no disadvantage.

DM1906

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Re: Wow!
« Reply #18 on: April 09, 2013, 10:34:22 AM »
Removing the gap entirely (for testing purposes, with no detectable gas leakage) showed no difference or appreciable loss of velocity, and well within the MOE of any chrono.  I've done this with most of my revolvers, and the results are always the same.

I mean I just find that hard to believe. I am NOT calling you a liar, but there almost HAS to be some kind of velocity loss. I mean there can't be a flash there if no gases are escaping.

I know it sounds counterintuitive, but the fact is, the variables were of the least affect, and not detectable within any margin of error.  Temperature and humidity have a much greater (detectable) affect than the gas leakage on a properly gapped cylinder.
Life's tough. It's tougher if you're stupid. -- The Duke

gandog56

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Re: Wow!
« Reply #19 on: April 09, 2013, 02:43:42 PM »
Removing the gap entirely (for testing purposes, with no detectable gas leakage) showed no difference or appreciable loss of velocity, and well within the MOE of any chrono.  I've done this with most of my revolvers, and the results are always the same.

I mean I just find that hard to believe. I am NOT calling you a liar, but there almost HAS to be some kind of velocity loss. I mean there can't be a flash there if no gases are escaping.

I know it sounds counterintuitive, but the fact is, the variables were of the least affect, and not detectable within any margin of error.  Temperature and humidity have a much greater (detectable) affect than the gas leakage on a properly gapped cylinder.

I need to quit beating this dead horse, but how can a 6" revolver NOT have less velocity than a 6" semi? I mean you SEE the flash. You KNOW gas is escaping.
Some people think I'm paranoid because I have so many guns. With all my guns, what do I have to be paranoid about?

sqlbullet

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Re: Wow!
« Reply #20 on: April 09, 2013, 02:55:56 PM »
.1% of the gas escaping will have less impact than a .5% variation in charge ( that is .05 grains in a 10 grain charge) or even a .0001" variation in groove depth.

No one is saying it makes no difference in the theoretical sense.  We are saying that the difference it makes is so tiny as to be completely obscured by other factors.

DM1906

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Re: Wow!
« Reply #21 on: April 09, 2013, 04:13:51 PM »
Personally experienced scientific laboratory fact trumps rumor, every time.
Life's tough. It's tougher if you're stupid. -- The Duke

gandog56

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Re: Wow!
« Reply #22 on: April 09, 2013, 04:18:32 PM »
.1% of the gas escaping will have less impact than a .5% variation in charge ( that is .05 grains in a 10 grain charge) or even a .0001" variation in groove depth.

No one is saying it makes no difference in the theoretical sense.  We are saying that the difference it makes is so tiny as to be completely obscured by other factors.

Well, I think I stated elsewhere that velocity really doesn't matter to me anywhere near accuracy of the load. And my Dan Wesson Razorback LOVES my reloads!
Some people think I'm paranoid because I have so many guns. With all my guns, what do I have to be paranoid about?

gandog56

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Re: Wow!
« Reply #23 on: April 25, 2013, 08:32:54 PM »
Aw well, since both my 10mm's are 1911's, I' stick wit what I got.
Some people think I'm paranoid because I have so many guns. With all my guns, what do I have to be paranoid about?