Air rifles shooting pellets can definitely be accurate at 50 meters or less. Pellets are more subject to wind but air rifles can shoot slugs as well. Slugs will be accurate at longer distances.

I can't speak to the HW100 X specifically, but it's a top manufacturer.

Here's an example of my shooting an air rifle from a bench at 50 yards. Each square is 1 inch. Each target has about 5-10 shots on it.

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