pete i looked up the pellet count on tatums list of no 7 1/2 shot and i came up with the sabout the same count you have for a ounce of 7 1/2 s. but i must state i made a errer in the name of shells used they are winchester universal loads ones with the steel heads..the load i stated is correct 3 dr eq 1 1/8 ounce of 7 1/2..this was the shell that was used for patterning..i cut open 2 of these shells one had a pellet count of 342 the other 345.. the reason i used a 28 inch circle is because i have a few thousand of these cardboard circles given to me by a friend.. maybe i should weigh the contents of one of these shells..im gonna go weigh one rite now..ya no pete now i m gonna have too reshoot this old smith in the 30 inch circle... charlie
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