Why do snipers still use optical rangefinders that require tedious calculations even though there are laser rangefinders?

In the evolution of sniper rifles, the method of range estimation has always been a crucial factor – without precise distance, a shooter cannot accurately adjust the bullet's impact point, thus achieving a first-shot hit on the target.

Image: The M21 sniper rifle incorporated an intricate mechanical structure to enable soldiers to estimate range without calculations, ultimately proving to be a dead end.

Throughout this process, various nations have taken numerous detours in developing sniper rifles. Precise optical range estimation involves complex calculations, requiring shooters to possess higher educational levels and relevant skill training. In recent years, with advancements in optoelectronic technology, miniaturized laser rangefinders have become widely prevalent, leading many to believe that snipers only need a laser rangefinder.

Image: The mil-dot reticle, which necessitates extensive and precise calculations, remains the mainstream choice for professional snipers.

Relying solely on laser rangefinders to replace optical range estimation through scopes/observation devices is a very hasty and dangerous practice. Firstly, in atmospheric conditions such as rain, fog, or smoke, laser beam attenuation is significant, causing the maximum detection range of laser rangefinders to drop to one-third or even lower.

Secondly, in complex environments, the laser beam may not actually illuminate the target. For instance, when attempting to range a target 900 meters away, the laser beam might instead hit grass or leaves at 600 meters.

Image: Laser rangefinders should only be used as an auxiliary tool.

Especially considering factors such as countermeasures against laser-guided weapons – like laser-guided bombs and laser-guided artillery shells – modern military forces of powerful nations have begun widely equipping anti-optoelectronic surveillance devices. Recklessly using a laser rangefinder could easily expose the sniper's position.

Therefore, with current technology levels, snipers will greatly benefit from using laser rangefinders when conditions permit; however, the fundamental skill of optical range estimation remains indispensable and must be firmly mastered.