Some scopes struggle to achieve focus on both fronts at the same time simply due to your eyes. For you it may not focus while for someone else it may focus perfectly
The way I fix such a problem is to screw the front ring off and readjust the parallax setting manually until you achieve focus. It's easy and only takes a few minutes.
Trystan
Good bullets properly placed always work, but not everyone knows what good bullets are, or can reliably place them in the field
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