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July 1st, 2007

Werner Mehl's Amazing Videos

Germany’s Werner Mehl is the talented engineer who created the PVM-21 infrared chronograph, in many respects the most sophisticated ballistic speed-measuring system currently available to the general public. Werner runs a company, Kurzzeitmesstechnik, which specializes in high-tech ballistic measuring systems and ultra-high-speed photography. Werner has engineered camera and lighting systems that can literally track a bullet in flight, millimeter by millimeter, with eye-popping resolution. Werner employs digital cameras that record up to 1 million frames per second, with effective shutter speeds as fast as 1.5 nano-seconds. The videos produced by Werner’s systems are amazing. Below are two short samples. The first shows a 7mm bullet penetrating cardboard. Note you can clearly see the engraving of the rifling on the bullet. CLICK HERE to watch VIDEO. (Right click and “save as” to download video.)

The second sample shows a lead 22LR bullet hitting a steel silhouette and disintegrating. Below is a low-frame-count version (for quicker page-load). But CLICK HERE to watch the full 1.9 megabyte version with a higher frame rate. It is much more impressive, as it reveals the complete bullet disintegration in great detail.

Kurzzeit 22LR bullet video silhouette

To view more videos and learn more about the impressive PVM-21 chronograph, visit More of Werner’s high-speed gun videos can be accessed via this LINK. In the USA, Werner’s PVM-21 chonograph, which works even in complete darkness, is sold by The PVM-21 offers a unique combination of compact size and superior performance. It even comes with a TV-style remote control and a complete software package allowing you to track PVM-21 chrono data with a personal computer.

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July 1st, 2007

NEW Redding Case Neck Gauge

Every precision reloader should have a quality tool for measuring case-neck wall thickness. This is essential for those who turn necks–to check the results of your turning. Even if you prefer no-turn necks, a case neck gauge lets you check your neck dimensions and sort cases by neck wall thickness and uniformity. Consistent neck tension is critical for accuracy–but without uniform neck-wall thickness neck tension is hard to control. The new Redding Case Neck Gauge, released in late April, has many notable features. First, it has an integral base. This can be screwed to a bench-top, placed in a vise, or simply held in place with a clamp.

redding caseneck gauge

The pilots are stainless steel with a smart design. First, on the inboard end, the pilot is slightly under-cut so it doesn’t give a false reading based on slight imperfections in the case mouth. On the other end, there is a step-down (i.e. reduced radius). This provides extra clearance around the neck-shoulder junction, where a doughnut may exist.

Redding case neck gauge pilot stopWith this “smart shape”, the pilot ensures you are getting accurate read-outs of the critical area of the neck-wall. The pilot also rides on a shaft with pins on each end that fit in the case flashhole. This keeps the case centured on the pilot. The Redding Case Neck Gauge (item 26400) ships with two pilot stops, #06121, for .22 caliber and #06130, for .30 caliber. If you use this with a 6mm you’ll need to order pilot #06122 for BR style small flashholes, or pilot #06124 for large flashholes (e.g. with 243 Win brass). The new Redding Case Neck Gauge is available from, Midsouth Shooters Supply, and other vendors for about $65.00, including .001″ dial indicator.

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