Fellow Double Gun Fans: In reference to the above study, performed by Ken Eyster at Heritage Gunsmiths in Ohio, I think one can get the idea that changing the radius of the forcing cone may improve patterning (by 10 shot); however, one has to keep in mind this was a very, very small study, utilizing only one gun and one barrel. I am not a statitician, but I wonder if the 10 shot improvement would even lie outside of experimental error parameters. I personally knew Ken Eyster quite well (he is now deceased) and know his son Jim Eyster who has now taken over at Heritage Gunsmiths. Ken did good work most of the time and his son Jim seems quite competent as well. I personally had them back bore several of my competition guns and most of them turned out pretty good. A couple didn't. My point with all this is.....which I knew when I presented the initial question....I don't think we will ever really know if lengthening forcing cones harms or helps our guns until further, large scale, double blinded, without bias testing takes place.
