BDC Scope Calculator — BDC Reticle Calculator

About this BDC scope calculator

This BDC reticle calculator shows the distance each bullet drop compensator (BDC) mark on your riflescope actually matches for your cartridge, bullet weight, muzzle velocity and ballistic coefficient. Choose your scope's reticle, enter your load and magnification, and the calculator works out a personalized holdover yardage for each mark.

Manufacturer BDC charts assume a specific reference load and zero. Your rifle and ammunition can differ, so always confirm every hold at a safe range before hunting. See the reticle data sources for the manufacturer documents used.