Choke constriction info.

[Double Lab]

Originally Posted by Robin Lewis

Is this correct or should it be eliminated?
http://www.parkerguns.org/pages/faq/ChokeSize.htm

Robin, those figures have been the standard for years and should not be eliminated. Just my $.02.

Edgar, that is some really neat stuff.

[todd allen]

Originally Posted by Robin Lewis

Is this correct or should it be eliminated?
http://www.parkerguns.org/pages/faq/ChokeSize.htm

That chart is on the money. That said, I think every gun should be pattern tested with whatever load you will be using.

[edgarspencer]

Bob, it took me a moment or two to understand your table of figures, but now I see what you were saying.you have a difference between the bore of .751, and the muzzle of .722, giving you .029" constriction. It depends on whose chart you read, but it's certainly closing in on full.
My only question is your table doesn't seem linear, and looks like it bells in the last inch or so.
All of my Parker choke reamers are very straight. (but tapered, duh)

[Quack me up!]

That's what I'm concerned with, that much constriction in the last inch or so. Doesn't seem right to me?

Originally Posted by edgarspencer

Bob, it took me a moment or two to understand your table of figures, but now I see what you were saying.you have a difference between the bore of .751, and the muzzle of .722, giving you .029" constriction. It depends on whose chart you read, but it's certainly closing in on full.
My only question is your table doesn't seem linear, and looks like it bells in the last inch or so.
All of my Parker choke reamers are very straight. (but tapered, duh)

[Pa SxS]

I wish I could understand all that machinist mumbo jumbo but I don't. I always considered .030 as the start of the full choke range but the patterning board results are what really count.

[Dean Romig]

Edgar, with a straight line (tapered) cutter how did they arrive at the 'ogee' at the beginning and at the end of the length of the choke taper? Was the ogee the result of the final hone and polish?

I recall reading that Parkers produced in Illion did not have the ogee that the Parker Bros. craftsmen finished the chokes with... I wonder why not and if the transition from the cylinder tube directly to the choke cone would affect the pattern by the possibility of more shot pellets being deformed?

I have a 12 bore with .041" and .042" of constriction that is certainly tighter than the .029" constriction suggested as full choke... so, what degree of choke should I call it?





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[OH Osthaus]

Originally Posted by Dean Romig

I have a 12 bore with .041" and .042" of constriction that is certainly tighter than the .029" constriction suggested as full choke... so, what degree of choke should I call it?
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that is where my Elsie Longrange is - I think Super Foxes are typically around that or even just a bit more

i just call it extra full

[edgarspencer]

Originally Posted by Dean Romig

Edgar, with a straight line (tapered) cutter how did they arrive at the 'ogee' at the beginning and at the end of the length of the choke taper? Was the ogee the result of the final hone and polish?

A straight tapered reamer is not going to yield anything but a straight taper. Any machining operation that yielded a curved surface at either end of the taper was either done by a hand lapping operation, or another tool. Of all the reamers in Hayes' tool box, there are no such reamers.

Originally Posted by Dean Romig

I recall reading that Parkers produced in Illion did not have the ogee that the Parker Bros. craftsmen finished the chokes with... I wonder why not and if the transition from the cylinder tube directly to the choke cone would affect the pattern by the possibility of more shot pellets being deformed?

I Can't comment on this, because I have never read what you're refering to, nor do I own, or care to own , any Ilion Remington made Parkers

Originally Posted by Dean Romig

I have a 12 bore with .041" and .042" of constriction that is certainly tighter than the .029" constriction suggested as full choke... so, what degree of choke should I call it?

Cheerio tight. Not a British choke term, but a Yankee one, describing a gun so tight, you can shoot through a Cheerio and not break it.

[TOOL MAN]

[QUOTE=Dean Romig;210030]
I have a 12 bore with .041" and .042" of constriction that is certainly tighter than the .029" constriction suggested as full choke... so, what degree of choke should I call it?

Deanno, according to my Shotgunner's Urban Dictionary that's listed as: MFT.

Just text your local Millenial for a more accurate definition.....

[Dean Romig]

Incidentally, this is the gun that Larry Frey used to win the New Year's Day Shoot with. It reaches out there.





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