How Many Groups to Measure Accuracy?

[Brithunter]

Hi All,

Now I jave an article somewhere which shows how using a "Master target" will provide the true group size of your rifle. You put two target of the same type exactly over one another and then shoot a group on the tope one, then you change the top target and do this at least twice more that session/day.

Now you save the master target and repeat using it with one group over period of weeks until you have shot 10 goups on it using a new target each time over the top. Numbering the top targets as you go. Once you have shot you ten targets the "Master Target" will show the true grouping of you rilfe ammunition combination over an extended period and it seems that what we might call flyers normally come into this larger true group so you do not discount flyers. Of course you have to use the same type of ammunition over this trail to make it mean anything.