You never want your barrel to get too hot. Accuracy suffers when barrels over-heat, and excessive heat is not good for barrel life. So how do you monitor your barrel’s temperature? You can check if the barrel is “warm to the touch” — but that method is not particularly precise. There is a better way — using temperature-sensitive strips. McMaster.com (a large industrial supply house) offers stick-on temp strips with values from 86° F to 140° F. A pack of ten (10) of these strips (item 59535K13) costs $10.71. So figure it’ll cost you about a buck per barrel for strips. That’s cheap insurance for your precious barrels.

Forum member Nomad47 says: “I have temperature strips (bought at McMaster-Carr) on all my barrels. I try not to shoot when the barrel gets to 122 degrees or higher[.]” Here are photos of the McMaster-Carr temp strips on Nomad47’s customized Savage.

Bad things can happen if your barrel gets too hot. First, with some barrels, the point of impact (POI) will shift or “walk” as the barrel heats up excessively. Second, even if the POI doesn’t change, the groups can open up dramatically when the barrel gets too hot. Third, if the barrel is very hot, the chamber will transfer heat to your loaded cartridge, which can lead to pressure issues. Finally, there’s considerable evidence that hot barrels wear out faster. This is a very real concern, particularly for varmint shooters who may shoot hundreds of rounds in a day. For this reason, many varminters switch among various guns, never letting a particular barrel get too hot.

Neconos.com offers Bar-L Benchrest strips that visually display heat readings from 86 to 140 degrees. Think of these strips as compact, unbreakable thermometers. With adhesive backing, they can also be used to monitor barrel heating. Put a strip on the side of the barrel and the barrel’s temp will be indicated by a stripe that changes from black to green. There is also a “general purpose” strip that reads to 196 degrees (bottom row). The Benchrest strip (86F to 140F) is in the middle. Bar-L temp strips cost $9.00, or $25.00 for a 3-pack.

Here’s the procedure for deleting unnecessary temp files.

First click on the “Start” button. Next select “Run” from the Menu.

When the “Run” window appears, type in “%temp%” (without quote marks), and click “OK”.

A folder window called “Temp” will appear. All the files and folders in that window can be highlighted and sent to the Recycle Bin. WARNING: If you find some important data files (such as family photos or your IRS tax returns), you may want to move these to another place on the hard drive BEFORE you empty the Recycle bin. But in reality, it’s normally safe to delete any file that displays when you peform the Run > %temp% command. If a file in that temp folder is being used by an active program, Windows won’t let you delete it.

On this editor’s three-year old computer, running Windows XP, there were nearly 18 Gigabytes of temp files that I was able to delete. That freed up a lot of space on my hard-drive, and my computer runs faster now.

If you don’t understand our explanation of the Temp File deletion process using the %temp% command, READ THIS TECH SUPPORT PAGE from About.com.

Note, there are also unused files in the “Temp” sub-folder in your Windows folder on your C:/ Drive. But you need to be a bit more careful deleting those files — so we won’t explain that process here. Just be aware that there may be many more Gigabytes of useless files stored in your computer.