The "chart" does not mention that the bore diameters listed are nominal dimensions and, for example, about half of the Parker production was not bored to those dimensions. Some comment should be made about early Parkers, Super Foxes, German guns and many other examples that do not conform to the .729 standard.

Bill, I don't know if I'm reading you right, but it doesn't matter [ within reason ] if the bore is .725 to .750, it's the amount of constriction that dictates choke. I have a chart hanging on the wall over at the club from some screw in choke manufacture that is a bit easier to remember.
SK - .005
IC - .010
SKll or LM - .015
Mod - .020
IMod - .025
Full - .030
Everything is linear and in MHO as is should be.

[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.....:whistle::bigbye:

:shock: Does the T represent Tight??:shock:





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I think we all know what the "F" is

And my 20ga. Sterly is .035. MFT.:eek:

I have a 12ga parker 26" vr bbl choked out at 021/023.
is this common?

Wow... I wonder what that gun was ordered for?




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