This is an excellent discussion!

There is a very nice statistical approach to estimating actual accuracy based on group size and number of shots. See the

For hunting purposes, another approach can be found here:

There is a very nice statistical approach to estimating actual accuracy based on group size and number of shots. See the

*Long Family Discussion*For hunting purposes, another approach can be found here:

*. This essentially allows one to average the first shot over several shooting sessions (difierent days, weeks, lighting, etc.) to infer true accuracy and zero. The technique also tracks the same hit information for the second an third shots to capture the difference between a cold, possibly clean, bore and a fouled warm bore.***The Hunting Zero**
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