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Tag Archives: Oehler 35p

Barrel Length and Velocity

I recently had an opportunity to fire the same 223 Remington ammo over a chronograph out of 3 very different barrel lengths, and recorded the muzzle velocity differences I observed.  The chronograph was an Oehler 35p, which is one of the most accurate in the industry.  The ammo fired was Federal’s 55gr FMJ ammo, and all of it was out of the same box. Here are my measured results: Barrel Length (inches) Average Muzzle Velocity (fps) 20″ 3019 fps 16″ 2837 fps 7.5″ 2135 fps Here is an inferred trendline based on the measured velocities for other 223 Remington barrel ...

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Oehler 35P Chronograph Manual

Oehler Research definitely makes the best chronographs in the industry … hands down, no argument.  I had a chance to talk with Ken Oehler at the 2013 SHOT Show, and have to say it was one of the most enjoyable conversations I’ve ever had with someone regarding ballistics.  Ken knows his stuff, and is an expert among experts in shooting sports.  I’ve used an Oehler 35P, which is the pro-sumer grade model they offer (i.e. model targeted at professionals or high-end consumers) and can say they are a joy to use … and VERY accurate.  You get very few errors and ...

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Chronograph Accuracy Tips – 15 Practical Tips to Increase Accuracy & Reliability

“No mere gadget, the chronograph is one of the most powerful tools imaginable in load development and problem diagnosis. A bullet’s velocity is one of the major contributors to its behavior, and if you don’t know what its velocity is, you may never understand that behavior. But knowing why the bullet behaves as it does, you can take intelligent corrective action that wasn’t available to you before.” – Dan Hackett, Precision Shooting Magazine A chronograph can be a powerful tool … but if you get more than a few “ERROR” readings in a row, you may be tempted to put ...

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