Many thermal scopes now carry an "L" or "R" in the model name — shorthand for a built-in laser rangefinder, often paired with an onboard ballistic calculator. Used well, they take the guesswork out of distance and holdover. Used blindly, they give false confidence. Here's what they actually do and...

Zeroing a thermal scope follows the same logic as zeroing any rifle scope — fire, see where it lands, move the reticle to match — with one twist: you need a target that shows up in thermal, and most modern thermals have a one-shot "freeze" feature that makes the job...

Crank the zoom on a thermal scope and the image gets bigger — but blockier and softer too. That's not a fault; it's how digital zoom works. Understanding it will make you a better shot, because the cleanest, most useful image on any thermal is almost always at or near...

384 or 640? It's the question that decides most thermal scope purchases — and the marketing answer ("640 is better") is misleading. The truth is more useful: at the same lens, a 384 and a 640 reach about the same distance. What changes is the field of view. This guide...