What Dom said.
I can always hit a plate at 100 yards standing, freehand, but it will be a lousy group. At 150 yards I don't always hit it.
With my shooting sticks I can always hit a plate at 300 yards. I've never shot at a plate from a proper bench rest; if I'm on a proper bench I'm always testing something and need more precise targets.
Every rifle I shoot has a scope on it. Iron sights would, with my aged eyes that no longer focus properly, make 75 yards a tough plate shot.
I shoot somewhat less than 500 rounds of center fire amunition a year, so I'm a long way from an expert, but am I average?
Way too many variables to answer the question definitively.
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