What to do? GHE 20 ga

[Big Friend Ten (BFT)]

Thanks Dave!

In the article and graph Austin refers to competition guns. Is there any research on Parker chokes for ordinary (dare I say "ordinary" referring to any Parker"?) Parkers? If would be interesting to measure and plot a sample set or at least 50 Parkers from each decade. This could be done by by distant members using a common reference data sheet such as measure and record each choke at every 1/8" from muzzle to point of no choke/bore diameter.

PS: The 34" 12 gauge DH Damascus in which I measured a parallel section of 1/2" was built on a #3 frame. I would consider it a special purpose, maybe a competition gun.

[Double Play]

Mark,
My reply was not to in any way condone the altering of a Parker choke as that is something I personally would never do. Like you I also have what I believe to be unaltered chokes that have no parallel section. I think there was a typical boring that was done for the intended pattern but when the gun when for patterning testing they would then be adjusted as needed to meet the customers requirements. I obviously have no proof of this but that is how I have interpreted what I've read on this subject over the years.