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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
"Slide Rules, Other"
Perrygraaf / Speer Ballistics Calculator
Perrygraaf
USA
Cardboard
1956
23 cm
Gunnery
Notes:
This is a slide chart for determining retained velocity and bullet drop at specified ranges given muzzle velocity and the ballistic coefficient of the bullet.
Image 1
Image 2
Image 3
Image 4
