The Firing Line Forums - View Single Post - Calculating scope subtentions at different powers

tpcollins · November 19, 2012, 08:36 AM

Simple question - I have a Swarovski 3-9x36m scope with the 4A reticle. Per their specs, the subtention from the crosshair down to the edge of the vertical post at 100 yards is 25.2" at 3x and 8.3" at 9x. Is there a special formula to calculate these distances for 4x thru 8x as well? I would assume a linear taper would be too simple . . . thanks.

November 19, 2012, 08:36 AM	#1
tpcollins Senior Member Join Date: February 18, 2009 Location: SE Michigan Posts: 558	Calculating scope subtentions at different powers Simple question - I have a Swarovski 3-9x36m scope with the 4A reticle. Per their specs, the subtention from the crosshair down to the edge of the vertical post at 100 yards is 25.2" at 3x and 8.3" at 9x. Is there a special formula to calculate these distances for 4x thru 8x as well? I would assume a linear taper would be too simple . . . thanks. __________________ What direction did that last shot at Kennedy come from?