Beyond the Bore-Scope — BEMIS Laser Bore Inspection Machine
Do you think your borescope is a state-of-the-art bore inspection device? Well think again. There is now something way more advanced than any optical borescope. A new laser-equipped scanning device can map the entire interior surface of a barrel bore. With this new technology you can now examine every land and every groove, millimeter by millimeter, from the chamber to the tip of the muzzle. The most minute flaw in a barrel can now be revealed.
The new device is called the BEMIS-SC™ (for Barrel Inspection Machine Small Caliber). Operated by Chesapeake Testing and Laser Techniques Company (LTC), BEMIS-SC performs non-destructive laser-based mapping of gun bores. The BEMIS-SC currently works with .22 caliber to .50 caliber (5.56 – 12.7 mm) barrels. The BEMIS captures thousands of highly accurate data points over the full length of a barrel. The inspection can be completed in mere minutes, with scan results displayed in graphical, tabular, and 3D visual formats. Here is a barrel cross-section, as scanned by the BEMIS-SC:
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Until the 1980s, gun tube inspection had to be conducted by hand using a manual “star” gauge, a process that would take hours and provide minimal data. Electronic gauges were eventually developed along with the video bore scope, but these systems were still limited to very few, low-resolution data points. That has all changed with the BEMIS™, a huge leap forward in technology that is capable of rapidly capturing thousands of precise data points.
BEMIS-SC (Small Caliber) Barrel Inspection Machines
Chesapeake Testing commenced BEMIS-SC barrel inspection services in September 2014. Testing is performed in Chesapeake’s commercial barrel inspection laboratory, located in Belcamp, MD, minutes from the U.S. Army Aberdeen Proving Ground. While testing is currently limited to .22 to .50 caliber barrels, Chesapeake Testing will accommodate both smaller and larger calibers in the future.
“We have always focused on building our company around very unique technologies. BEMIS™ has changed the industry in regards to the inspection of weapon systems. We are excited to be an exclusive partner with LTC in this industry and look forward to contributing to the future of this technology,” says Jim Foulk, founder and president of Chesapeake Testing.
Once the barreled action was complete and the AI chassis was successfully milled, Frank applied a tan Cerakote finish to the barreled action. This would give a proper tactical look to the rifle, while providing superior corrosion resistance for the metal parts. To learn more about Cerakote finishing, check out the 
By the end of his load testing session, Frank was getting good groups with Hornady 120gr GMX factory 6.5 Creedmoor ammo, and really superb groups with handloads. The 120gr GMX ammo “was going 3100 fps with no ill effects”. The best handloads were approaching 1/4 MOA for three shots, and Frank’s load with Berger 130 VLDs shot even smaller than that: “In my opinion the load development we did was worth its weight in gold. Where else can you build in a rifle in two days, then go out and develop a baseline load using everything from 120gr ammo to 140gr ammo with a few in between? My favorite load and clearly the rifle’s too, was the [Berger] 130gr VLD. This gave us great velocity, awesome groups [with some one-holers] and really nice results at distance.”
