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1895ss Super Member
Joined: Jul 21, 2005 Posts: 2612 Location: Not Here...!!
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Posted: Wed Dec 13, 2006 8:19 pm Post subject: Re: Computing velocity |
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What are you trying to say Vince? Come on spit it out.........!
_________________ A cruel truth is much more desirable than a really nice lie.
'Tis far better to walk alone than to follow a crowd or an a**hole going the wrong way. |
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Vince Site Admin
Joined: May 25, 2005 Posts: 15704 Location: Brisbane AUSTRALIA
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Posted: Wed Dec 13, 2006 8:21 pm Post subject: Re: Computing velocity |
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_________________ Cheers, Vince
Illegitimi non carborundum
(Never let the bastards grind you down)
Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God.
"Nulla Si Fa Senza Volonta."
(Without Commitment, Nothing Gets Done) |
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1895ss Super Member
Joined: Jul 21, 2005 Posts: 2612 Location: Not Here...!!
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Posted: Wed Dec 13, 2006 8:23 pm Post subject: Re: Computing velocity |
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_________________ A cruel truth is much more desirable than a really nice lie.
'Tis far better to walk alone than to follow a crowd or an a**hole going the wrong way. |
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Grant Super Member
Joined: Aug 28, 2006 Posts: 325 Location: Grande Prairie, Alberta
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Grant Super Member
Joined: Aug 28, 2006 Posts: 325 Location: Grande Prairie, Alberta
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Grant Super Member
Joined: Aug 28, 2006 Posts: 325 Location: Grande Prairie, Alberta
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1895ss Super Member
Joined: Jul 21, 2005 Posts: 2612 Location: Not Here...!!
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Posted: Thu Dec 14, 2006 4:26 pm Post subject: Re: Computing velocity |
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Yep you sure do and they change around from time to time and depending on what you're buying.
By the way, Russell Sports in Calgary sells the F1 for $104.99
_________________ A cruel truth is much more desirable than a really nice lie.
'Tis far better to walk alone than to follow a crowd or an a**hole going the wrong way. |
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PaulS Super Member
Joined: Feb 18, 2006 Posts: 4330 Location: South-Eastern Washington - the State
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Posted: Wed Dec 27, 2006 1:20 am Post subject: Re: Computing velocity |
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Every time I hear that this software or that new software can accurately predict the speed of a bullet I think of the tests that my brother and I have made with our revolvers. Most loads will shoot 125 to 150 fps faster in my gun than they do in his. That is about a ten percent difference in the velocity. That to me would not be an accurate estimation if someone told me my ammo would shoot the bullet at 1500 fps and it was 10% slower or faster. We used our revolvers for the tests because they are the same caliber, we were able to use the same loads (mine) in both guns, the barrel lengths are the same, they are the same make and model with a serial number that is very close (within three numbers). For all practical purposes they are identical guns but there is quite a difference in the speed at which a bullet from the same load will exit the barrel. I have never found any software that can even come close to predicting the velocity of ammo. My chronograpgs do a real good job of recording it though. That chronograph will take the wind out of your sails real fast. I have fired loads for others in their rifles over the chronograph that they thought were over 2700 fps and showed 2500fps - I am sure that they walked away thinking I should have my chrono calibrated. Funny thing is both of my chronos give the same or nearly the same (within 1%) velocity for the same ammo.
_________________ Paul
__________________
Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads |
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gelandangan Super Member
Joined: May 07, 2006 Posts: 6396 Location: Sydney Australia
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Posted: Thu Dec 28, 2006 4:25 pm Post subject: Re: Computing velocity |
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Hi guys,
Hope you all had a Merry Christmas.
Just came back from goat hunting at Cobar..Got a few of them critters and ...
err better start another thread there..
Oh yeah, back to topic.
There is a program called QuickLoad from www.neconos.com/details3.htm
It does the estimation of pressure and velocity based on weight of projectiles, powder, case capacity etc.
Been thinking to get one if it works okay. Must be great for testing new powder etc.
Gelan
_________________ A straight line is the shortest distance between two points.
A smile is the shortest distance between two people.
Do - Not try!
gelandangan.weebly.com/ |
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Morax Super Member
Joined: Dec 18, 2006 Posts: 618 Location: Pittsburgh Pa
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gelandangan Super Member
Joined: May 07, 2006 Posts: 6396 Location: Sydney Australia
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Posted: Fri Dec 29, 2006 12:40 am Post subject: Re: Computing velocity |
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ya demo only shows a few calibers.
But the yap sheets does says that the bought version have a file for over 200 powders !!!
that is sure attractive !!
Gelan
_________________ A straight line is the shortest distance between two points.
A smile is the shortest distance between two people.
Do - Not try!
gelandangan.weebly.com/ |
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PaulS Super Member
Joined: Feb 18, 2006 Posts: 4330 Location: South-Eastern Washington - the State
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Posted: Fri Dec 29, 2006 5:26 am Post subject: Re: Computing velocity |
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You can estimate just as closely what the velocity of a given load will be by subtracting 100 or 200 fps from whats in your reloading manual. No software - no matter how good it is can provide an accurate figure for velocity of any load fired in any two guns. There is a lot more to that equation than weght and pressure. If you could add in the finish and exact size (to within .00001") of your barrel for each inch the bullet travels it and the amount of resistance that particular bullet has to being forced into the grooves (or over the lands) of your weapon then it might have enough information to come close to what your bullets velocity might be. You can probably get a chronograph for less than any commercial software and then you would know exactly what the speed was.
_________________ Paul
__________________
Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads |
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Northern Canuck Member
Joined: Sep 18, 2006 Posts: 72 Location: Alberta, Canada
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Posted: Wed Sep 24, 2008 4:37 pm Post subject: Re: Computing velocity |
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Grant
I just had to buy a different chrony when I moved to Alberta. I had a basic model which worked fine out on my fathers farm when it was just me shooting. If there was a problem I just quit shooting walked up and reset it. Now I have to test my loads at a range that has lots of people and one has to wait until a cease fire has been called to do any resets. Hence I bought a chrony with the cable remote readout and buttons. Just a consideration you may want to look at if you are stuck to a fairly busy range like I am.
Northern Canuck
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