Fred, thanks. Maybe Mark Ouellette can help with your forum issues.

I sent you a PM with my email. This issue of pattern effectiveness is interesting to me and I would like to learn more. Parker provided us with much information if I can just learn to interpret it. I have much to learn about Parkers and the arcania of shot gunning.

Fred,

Two things come to mind concerning your problem "timing out" when trying to upload files.
1. File size may be too large and will not load. Check the maximum size for file type on the advanced menu.
2. Slow connection from Internet service provider.

If those are not the problem try a cold boot. Turn your computer off and restart to release any cyber gremlins that may be camping out on your hard drive.

Mark

Thanks Mark and Merry Christmas.

Fred, it's a little late in this thread to start touting Greener's "killing circle" statistics and charts. Best to start a new thread. This thread is about a CHE 20 gauge in an A&F trunk case. To me, "killing circle" means that if I'm shooting a 7/8 ounce load in a loose bored gun, I'd better confine my shots to about 25 or 30 yards, the lesser range and #6 or larger shot on cock pheasants and other big prairie birds. If I'm shooting 1 1/8 ounces in a tight bored gun, regardless of gauge, I'm good to maybe 35 or 40 yards, if the shot size is #6 or larger. All other "killing circle" equations are either to one or the other end of the two limits I mentioned. Greener made more of it because he had books and guns to sell. I don't have either to sell and am only interested in clean kills on game birds.

Bill, you are correct in your "killing circle" assumptions. Basically, every 1/8oz. of shot gives you an extra 5yds. of "killing circle", all things being equal. I think this came from the Oberfel and Thompson book "The mystery of shotgun patterns". I'll have to find my copy and reread it but the book has a wealth of knowledge on pattern performance.

So does anybody know the definition of killing circle as used by Parker in the tables in The Small Bore Shot Gun?

I realize that some people may their own views on what killing circle should be but I would like to know what Parker said it was or used it in their 25 yard tables. Obviously it has to do with pattern density, so precisely how was that established?

I'm asking for help here, or at least the identification of the source where I can find the answer if somebody knows.