Forensic topography, in your browser
See a bullet’s fingerprint.
Every fired bullet carries a microscopic signature — striations left by the rifling inside the gun barrel. Drop an .x3p scan below to explore one interactively, or drop several from a single bullet to see them stitched around a virtual barrel.
Twelve lands from the NIST NBTRD Hamby 252 study — Barrel 1, Bullets 1 & 2 (6 lands each). Two are pre-selected as a likely match; swap any A/B pair from the scans panel to explore the rest.
Single land
Inspect one 3D surface scan. Orbit, zoom, and pick a crosscut line.
Full bullet
Stitch multiple scans into a cylinder to see the whole bullet in context.
Signature
Extract the 1D height profile that forensic algorithms compare.
Drop .x3p files here
A single land for inspection, or several to stitch into a full bullet. Files stay in your browser — nothing is uploaded.