Sightlok Blog
DNT TheOne 7-35×56 Review — Would Make an Excellent Telescope
Should you buy a DNT TheOne 7-35×56? Probably not. At 35X the exit pupil is 1.6mm, narrower than the human pupil in daylight, and mirage degrades the image before the glass does. 7X is too much magnification for NRL22 and for close PRS targets, and the scope weighs nearly three pounds mounted.
What is the Best Scope for Hunting? (And Why Almost Everyone Chooses Wrong)
What is the best scope for hunting? For nearly every big game hunter in North America, a 1-6X or 1-8X LPVO. Independent data sets put the average big game shot at roughly 130 to 145 yards, and hunters take about 45% of big game inside 100 yards. Our pick is the Sig Sauer EASY6-BDX 1-6X.
7 Reasons To Avoid the Vortex Impact 4000 (And Better Options to Consider)
Should you buy a Vortex Impact 4000? Probably not. The Impact 4000 has excessive beam divergence, a Bluetooth remote that drains batteries or makes you wait to re-pair, a battery and display that can fail in the cold, a compass calibration many owners can’t complete, a night display you can’t dim and weaker ballistic software.
What is the best WMLRF?
Tango Fire 4000 or Vortex Impact 4000? We judged both on beam divergence, real-world range, wired or Bluetooth remote, ballistic software, cold-weather reliability, support and cost, and list the pros and cons of each. Then there’s the third option most buyers never consider.
Tango Fire 4000 vs Sightlok RF-1
Tango Fire 4000 or a Sightlok RF-1 with a handheld rangefinder? We judged both on eight criteria. The Sightlok RF-1 and Sig KILO2200 setup wins six, ties one on environmental sensors, and costs $1,010 less. The Tango Fire 4000 wins one: its wired remote.
Sig Sauer Remotely Disabling BDX Rangefinders & Scopes – Our Argument with Nick Vitalbo, Applied Ballistics CEO
Sig Sauer’s BDX app remotely disables BDX rangefinders and scopes until you update their firmware. Here’s our argument with Applied Ballistics CEO Nick Vitalbo about the forced-update policy, and his answers.
Sig WMLRF KILO WARP Rangefinder – Potentially Huge Implications
Sig Sauer’s KILO WARP weapon-mounted laser rangefinder (WMLRF) uses the KILO10K’s engine and laser and runs AB Elite. Paired with the new BRAVO6T-BDX scopes, the KILO WARP could have huge implications. Here are 4 reasons to wait before you buy, including forced firmware updates and the lower-cost Sightlok RF-1.
Major Problems Discovered with Tango Fire4000 WMLRF
Should you buy a Tango Fire4000? Probably not. It has no built-in environmental sensors, a $130 Sig KILO2200 handheld outranges it, its excessive beam divergence can cause false readings near brush, two firmware bugs can lead to a wrong firing solution, Tango Innovations is moving its ballistic software to a cloud-based app, and owners report poor customer support.
Review of Sig KILO5K – Problems, Pros, and Cons
Our Sig KILO5K review: forced BDX firmware updates that can brick your rangefinder, a ballistic calculator that stops at 800 yards, real-world range of up to 2,500 yards, and why we still use and recommend the KILO5K.
Honest Sig KILO8K-ABS Review – List of Known Problems
Our honest Sig KILO8K-ABS review: forced BDX firmware updates that can brick it, real-world range of up to 4,000 yards, total dependency on your phone, ballistic profiles you can lose, and why we still use and recommend the KILO8K-ABS.


