The BSA Sweet 17 Rifle Scope was designed specifically for the 17
Hornady Magnum Rimfire (HMR) cartridge and uses trajectory compensation
technology similar to that found in military and tactical scopes. The
elevation drum increments are precisely calculated to compensate for the
drop of 17 HMR ammunition, but will work great for any flat shooting
cartridge. This scope is water, fog, and shockproof. Covered by the BSA
Limited Lifetime Warranty.