Monitor Barrel Heat with Pocket Infrared Thermometer
Monitor Barrel Heat with Pocket Infrared Gauges
You never want to run the barrel of a precision rifle too hot. Excessive barrel heat kills accuracy, increases copper fouling, and can cause rapid barrel throat wear. Over the years people have devised various means to cool their barrels — from electric fans to dunking in tubs of ice water.
But how do you know if your barrel is too hot? Consider a “non-contact” thermometer that reads your barrel’s “infrared signature”. The RadioShack or Kintrex pocket-sized, non-contact IR thermometers are ideal for shooters at the range or in the prairie dog fields. Both are handy and inexpensive — costing roughly twenty-five bucks ($25.00) for each device.
Pen-Sized Thermometers
Just 3.2″ long, and weighing a mere 1.3 ounces, the waterproof RadioShack and Kintrex thermometers are small enough to carry in your pocket, and will easily stow in any range bag/box. The Kintrex unit measures from -67 to 428 °F (-55 to 220 °C), while the cheaper RadioShack model measures from -27 to 230º F (-33º to 110º C). Kintrex is a respected manufacturer that also makes larger hand-held IR thermometers for industrial and shop applications. A little infrared thermometer like this is a gadget that every serious shooter should have. Given the cost of replacing barrels these days, can you afford NOT to have a temp gauge for your match or varmint barrel?
TECH TIP — How to Get More Consistent Readings
When using IR Thermometers on shiny steel barrels, sometimes the polished surface throws off the beam, causing inconsistent readings. You can solve this problem by simply putting a piece of masking tape on the area where you take your reading. Some other folks use a grease pencil to create a non-reflective spot to read. Forum Member Jon B. says: “I used an Exergen infrared in the HVAC industry. Without the grease crayon they sold, you couldn’t get an accurate reading with shiny metals.”
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Tags: Infrared, IR, Kintrex, Pocket Thermometor
What is too hot?
“What is too hot?” Is a great question. I have been using temp tape on prairie dog rifles and try to stop shooting and let them cool when they reach 140 deg just beyond the throat area. But, I still lost 204 Ruger barrel at about 3000 rounds.
An article on this site about the temp tapes says to stop shooting when 122deg. is met.