There is a world of difference in ranges, circle sizes, sometimes a square target rather than round, amount of shot, size of shot as well as different brands of shot with differences in number of shot per ounce. These differences show up by the day as well as by the era. The most confusion takes place when one or more of the variables are left out completely. There are some examples of stock book pages in The Parker Story. A previous thread discussed different pattern information included in various stock book pages and hang tags.
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