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Feet Per Second
Also referred to as ft/s and some written as FPS, it is a unit of measure for velocity.
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Fixed Sights
Non-adjustable sights.
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Flyer
A shot considerably outside a normal group on a target, not representative of the rifles or pellets potential accuracy.
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Follow-through
The continued mental and physical application of marksmanship fundamentals after each shot has been fired. This is important in air rifles duw to the increased barrel time.
Related Words Barrel Time
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Foot Pounds
(ft/lbs) Unit of measure for energy, being the amount of energy required to raise one pound in weight one foot above the ground against the normal pull of gravity. Used for pellet kinetic energy.
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Fouling
Deposits of material or lead in the bore, chamber or works of a rifle after discharge. Excessive fouling influences accuracy.
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Frame
The metal part of the rifle that contains the action.
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Free-floating Barrel
A barrel that is completely free of contact with the stock. This is critical to accuracy because of barrel harmonics. As the pellet is travelling down the barrel, the barrel is vibrating like a tuning fork. Any contact with the barrel will dampen or modify these vibrations with (usually) a negative impact on shot-group size or point of impact.
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