I just mounted my new Nikon P-22 BDC scope (2-7x 35mm) on top of my 22 GLENFIELD MOD. 60 (Marlin) I went to the Nikon Hunting site to get the bullet drop figured out. http://www.nikonhunting.com/spoton/ I figure a 50 yard zero and the standard .22 LR is 40 grain and 1,200 FPS. So made a chart for me to print out and tape to the butt stock. http://www.glovesandclover.com/22marlin/Nikonp-22BDC.pdf What do ya think?