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Post Info TOPIC: Do you ever miss birds because you have a long shot string?


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Do you ever miss birds because you have a long shot string?
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Chatting with a fellow hunter made me drudge up an old article which changed my thought process.  And this test was done with a target moving at 40 MPH which is not the normal speed of a crow for me.

Why Shot String Does Not Matter

By Randy Wakeman

Often when attempting to extol the virtues of a gauge or shell, the notion that shotstring is somehow of tangible importance is often touted. Perhaps it is cited because most folks cannot easily measure shotstring. Performance claims that cannot be verified are some of the easiest to make.

A complete database of shotgun patterns will likely never be generated. It has been estimated that it would take 18 billion patterning tests, equating to 8 million man hours of work: and this estimate did not include a shot-stringing study. The December, 1927, American Rifleman gave summaries from L. C. Weldin (ballistics engineer, Hercules Powder) that showed pattern percentages from 19-95 percent with the same load and choke based on 4,000 patterns.

In the October, 1946 American Rifleman a difference of 20% between minimum and maximum pattern percentages was tabulated. Oberfell & Thompson (1957) pulled that in to about 10% variation, assuming same brand of shell and same gun. That remains as close a generalization as can be stated to the present day.

Despite the automatic vagaries of any statement about shot string, Major Gerald Burrard explained it well, and discounted it after his tests. Though a several foot long shot string exists, as the shot cloud is moving ten times (or faster) than any game the shot cloud can only string a matter of inches: a 5 inch shift of pattern center at 40 yards was documented with a 40 mph moving target at right angles. Oberfell and Thompson (The Mysteries of Shotgun Patterns) found the same, finding that it was no more important than the accuracy of the hold of the shotgun itself, and with the 10% variation from shell to shell became even less worthy of concern. This is for direct crossing shots. It is naturally of no concern for outgoing or incoming targets.

Bob Brister (Shotgunning, Art & Science) gave some treatment to the matter, being able to shoot at his wife driving the family car towing a long paper target. However, his tests were outdoors, ignoring actual shotshell patterning deviations. Finally, and most recently, E. D. Lowry revisited the subject in detail, and set the matter to rest for good, concluding that Major Burrard was right all along.

ShotString remains more fable than of tangible value, joining back-boring and gauge selection within reasonable limits as being at all meaningful. Yes, a shotstring has at least the potential to move your shot cloud's center by up to 4 or 5 inches or so at 40 yards. To get excited about that, limited only to faster crossing shots, would require us to somehow ignore that gravity often nets us over 3 inches of drop at 40 yards, and the pattern from your next shell can easily show a 5% loss of efficiency.

Maybe we would like to forget that shotshell shot is the infamously ballistically hideous roundball, with just a 10 mph cross-wind moving our killing pattern far more than any imagined shotstring ever possibly could? Nothing yet approaches the tangible value of load selection by personal patterning; that is shot with no strings attached.



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Randy Wakeman, a ballistic expert ROTFLMAO!!!!!!!!!  He is still preaching that Damascus and Twist barrel guns should never be fired with nitro powder shells over on Shotgun World.  Never mind testing and lots of use to the contrary and the fact single base nitro powders were common when the guns were built. 

Quite humourous that he dismisses the findings of Bob Brister because his tests were conducted outdoors (don't know about anybody else but all my wingshooting is conducted outdoors too).  I take anything he has to say with a grain of salt. 


 



-- Edited by nhcrowshooter on Friday 18th of November 2011 08:49:44 PM

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nhcrowshooter wrote:

Randy Wakeman, a ballistic expert ROTFLMAO!!!!!!!!!  He is still preaching that Damascus and Twist barrel guns should never be fired with nitro powder shells over on Shotgun World.  Never mind testing and lots of use to the contrary and the fact single base nitro powders were common when the guns were built. 

Quite humourous that he dismisses the findings of Bob Brister because his tests were conducted outdoors (don't know about anybody else but all my wingshooting is conducted outdoors too).  I take anything he has to say with a grain of salt. 

 

How about the math where is that wrong?

 

John


 



-- Edited by nhcrowshooter on Friday 18th of November 2011 08:49:44 PM


 



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If a shot string is longer there would be some advantage to that in that one could over lead a bird a still hit it. If a shot string is short there would be some advantage to that too with more pellets hitting the target at the same instant apply a more overwhelming shock. That could be what is the most imortant factor but nobody has or can test that beyond observations in the field.

FWIW the shot string starts in the loaded shell. There is ample evidence demonstrating the best performance comes from square payloads with lead shot due to less bore scrub and pellet crush. A bigger bore allows for larger square payload so with shotguns size matters and it always has.

A smaller bore shotgun will never be as good or effective as larger bore, so one can extol the virtues of a larger bore shotgun over a smaller bore based on tested factual performance over the last 100+ years. It may or may not have to with shot string but it has evertything to do with physics.



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To a crow hunter, the most meaningful words in Wakeman's epistle: " ShotString remains more fable than tangible value..." A partial list of things more important to dwell upon number about 2,389.biggrin

 

skip



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nhcrowshooter wrote:

If a shot string is longer there would be some advantage to that in that one could over lead a bird a still hit it. If a shot string is short there would be some advantage to that too with more pellets hitting the target at the same instant apply a more overwhelming shock. That could be what is the most imortant factor but nobody has or can test that beyond observations in the field.

FWIW the shot string starts in the loaded shell. There is ample evidence demonstrating the best performance comes from square payloads with lead shot due to less bore scrub and pellet crush. A bigger bore allows for larger square payload so with shotguns size matters and it always has.

A smaller bore shotgun will never be as good or effective as larger bore, so one can extol the virtues of a larger bore shotgun over a smaller bore based on tested factual performance over the last 100+ years. It may or may not have to with shot string but it has evertything to do with physics.


 So you can not say the math is wrong?

 

It is simple the shot is going x fast and the bird is going x.  Most thing I have read about it show the bird never moves more then 4 inches even if the shot string is 10 feet long.

 

John



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A longer shot string would only help if a bird is over lead. That is not the cause of most misses, I would say more often they are not lead enough. However the shooting error I am most guilty of and I am sure many others are as well is lifting one's head to get a better look at the target.

I am not sure about the math because what Wakeman presents seems to be skimpy in it's detail.

However I know a bigger bore on a shotgun is advantagous for long range shooting.

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Hey NH,

 

I am curious, what is your average shot distance? Do you hunt a lot of tall timber or well educated birds? What is your max shot distance on a typical setup? I now this is off topic, not trying to start anything with the questions. I am genuinely curious.



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8 I would say on average we try to take our shots in a 25 to 40 yd range whenever possible. NH is the 2nd most forested state in the Union, lots of pine trees, Oaks and Maples. We look for openings and low spots for blind set ups but the trees are what they are, often the trees around us are 90 foot or better. Our birds are often educated because there is a lack of farming in this part of the state, limiting available locations. This year was made worse when the corn came in 3 to 4 weeks later than usual. At best we have a half dozen locations to hunt, when the corn was left standing we ended up pounding the same area pretty hard. We'll take any shot with the 10ga's out to 65 yards if the shot looks reasonably doable, slow glider for instance, especially if they look like they are not going to get any closer. In spite of tall trees everywhere, a small number of locations to hunt we do pretty good. This year 10gacrowshooter and I have taken over 1300 between us since Aug 6th. A record season for us but I think very respectable for this part of the US.

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I suspected you were hunting educated and/or "tall" birds. That is a great body count for only 6 locations. Very impressive.



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  You need to read "Shotguns the Art and Science" by Bob Brister if you dig that kind of stuff.  I read it last year and found it interesting.  But I dont lose any sleep over my shot string,  (I use good shells not promos). 



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Go out to a body of water (preferrably a non-moving body of water like a pond or lake).  Aim your shotgun (don't care what bore) to hit the water around 30-40 yards.  NOW...as you pull the trigger move your gun left to right or right to left as fast as you can and all you bb's are going to hit in one area.  You're not going to see a spray of bb's going across the water surface.

Shot string talk is a joke.

Hammer



-- Edited by Polish Hammer on Friday 2nd of December 2011 02:21:08 PM

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Polish Hammer wrote:

Go out to a body of water (preferrably a non-moving body of water like a pond or lake).  Aim your shotgun (don't care what bore) to hit the water around 30-40 yards.  NOW...as you pull the trigger move your gun left to right or right to left as fast as you can and all you bb's are going to hit in one area.  You're not going to see a spray of bb's going across the water surface.

Shot string talk is a joke.

Hammer



-- Edited by Polish Hammer on Friday 2nd of December 2011 02:21:08 PM


 I was seaduck hunting a month ago off of a small island off the coast of Maine. The Eiders fly pretty close to the water, if you miss, you know immediately where you hit and can adjust accordingly.  These seaducks are fast, so you must swing very fast and give plenty of lead. It was interesting to see the pattern  hit the water. With steel especially, the pattern is much smaller that one would think, even at 40-50 yds. And that was using a Light-Modified choke.

 

Kev



-- Edited by Mainehunt on Friday 2nd of December 2011 04:45:32 PM

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Polish Hammer, it would be ridiculous to think one could swing a gun and stretch a shot sting out like waving a stream of water from a garden hose. Hopefully nobody was thinking that is what long and short shot string means sand why a short shot string is better. Look at a 1 ounce load in a 20 gauge vs. a 16ga vs a 12ga vs. 10ga. The shot column is going to be shorter in the larger gauge. This equates to less pellet crushing, less bore scrub and a better pattern with each larger gauge.

In a shotgun short shot strings equals shorter shot column and that means better patterns and more pellets on target plain and simple.

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nhcrowshooter wrote:

Polish Hammer, it would be ridiculous to think one could swing a gun and stretch a shot sting out like waving a stream of water from a garden hose. Hopefully nobody was thinking that is what long and short shot string means sand why a short shot string is better. Look at a 1 ounce load in a 20 gauge vs. a 16ga vs a 12ga vs. 10ga. The shot column is going to be shorter in the larger gauge. This equates to less pellet crushing, less bore scrub and a better pattern with each larger gauge.

In a shotgun short shot strings equals shorter shot column and that means better patterns and more pellets on target plain and simple.


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nhcs:  Do you think you..... or anyone does...miss birds due to shotstring issues?

Just curious!smile

Skip



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No, unless the load is a blooper. Misses for all us are the result of fundmental wingshooting errors; wrong lead, lifting one's head, stopping one's swing, bad mount, flinch, error in range estimation. A short shot column in the shell is however advantagous to shotshell performance..

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Skip wrote:

nhcs:  Do you think you..... or anyone does...miss birds due to shotstring issues?

Just curious!smile

Skip


 Honestly most of my misses are due to poor lead. I have a habit of falling into the "I really want to see the impact" deal. So I lead the close birds too much. I think that at 1100fps+ the shot string is gonna be too short to compensate at the closer range. MAYBE further out it will help but I usually have a higher hit rate around 20-30yds.



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How does one determine if he/she is shooting a load that delivers a long shot string?

Ted

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I agree with Skip....there are 2389 things more important than shot stringing when shooting  a shotgun.

I also agree with NHcrowshooter...fundamental human errors are the reasons we miss flying targets. Please see his comments.

Actually, the only way to eliminate shot stringing, almost entirely, is to have a shotgun so large in diameter, or gauge, that all the pellets lay on two dimensions within the shell. That is, the pellets would form a length, and width, while lying in a circular pattern within the shell, but there would not be a column of shot, which prevents the non-existing third dimension. This would eliminate stacking of the shot pellets on top of one another. There would still be some stringing of the pellets, as not all shot enjoy the same ballistic coefficient, due to manufacturing imperfections.

I'll bet that would be a funny looking shotgun shell, with all pellets in one layer! About an inch high, and two inches in diameter!

Kencrow



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According to this article a short string is important for better kills but a longer shot string is more forgiving of an error of too much forward lead.

http://www.wildfowlmag.com/tips_strategies_shot_string_and_waterfowl_hunting_ballistics_010711.html



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I would imagine that as a shot charge travels further from its point of origin, the shot string should thus get longer. Didn't yet read your link NH but I will as time permits.

Ted

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oh boy...here we go again...

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Use a Wad Wizard Choke, problem solved.

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NH, I read the articular, and ok, I'll bite. biggrin

 

I am not sure I buy into the shot string theory of this fellow. At the end of the article, he refers to a 10 yard shot string. Just how far does that lead shot have to fly before the aft shot is ten yards behind? That doesn't even come close to sounding right.

 

Also, he says Blister was a mentor of his. I thought Brister's work pointed to shot string having little effect on a moving target? I seem to remember he used a tow behind pattern board to disprove the theory that shot string would elongate the pattern.

 

I think if the pattern is off the mark and you are blaming the shot string, you need to spend more time working on your shooting form and less time coming up with excuses.  According to a professional shooter I know, most miss birds occur by overloading and most clays are missed by under-leading them. He says most people miss in feet, not inches. Shot string will not make up feet. The best of the best may miss by inches, the rest of us miss by feet.



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