Aftermarket Drop-In Parts

“Drop-in part” doesn’t always mean “drop in to your gunsmith’s shop with your parts” and can be used for custom work without machining and only minimal fitting.

by RK Campbell
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Barrel Chamber Bevel And Case Head Position

An often overlooked area of the rifle involves the chamber mouth of the barrel in connection with case head projection.

by Norman E. Johnson
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Computers In The Shop

Office technology can greatly automate necessary tasks for the gunsmith.

by Wendell Dwight Deaner
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Rifle Shooting May Predict Your Lifespan

Simple Sitting Test Predicts How Long You’ll Live
Flexibility, balance and muscle strength are key indicators of longevity.
by Becky Lang
Discover Magazine November 2013

http://discovermagazine.com/2013/nov/05-sit-down

Brazilian physician Claudio Gil Araujo noticed long ago patients having trouble with motions such as bending down to pick up something off the floor or easily rising from a seated position indicated a loss of muscle, balance, and flexibility, all which indicate an increased chance of mortality.

Araujo eventually developed a simple test requiring no equipment called the Sitting-Rising Test. In a study published in the European Journal of Cardiology, Araujo had more than 2,000 patients ages 51 to 80 at at Clinimex Exercise Medicine Clinic in Rio de Janeiro take the SRT. The study concluded that people scoring less then eight points on the SRT were twice as likely to die within the next six years compared with those scoring higher and scoring scored three points or less indicated a 500% increased chance of dying within the same period compared with those scoring more than eight points. Each point increase in SRT score was associated with a 21 percent decrease in mortality from all causes.

To perform the SRT, sit down on the ground. Using no support is a perfect score of five. Using your hands or forearms on the ground or your body to help is a one point deduction for each contact. Appearing to lose balance is a half point. Then stand up, with the same scoring and deductions. Add them together for total score.

These illustrations from Discover Magazine shows how to perform the SRT.


If you imagine a rifle in that woman’s hands, you’ll notice she basically assumed a cross leg sitting position. Being able to get smoothly into and out of a sitting position with a rifle in your hands and using minimal to no support to do so yields a high SRT score. As with your marksmanship, shooting seated from a bench is also harmful to your health.

Medical professionals have spoken. An ability to get into and out of rifle shooting positions indicates a maintenance of sufficient muscle, flexibility, and balance for long, healthy life. Dry practice and live fire regularly from field shooting positions. It’s for your health!

Recycling AR-15 Barrels

Because you wouldn’t trade in your car just because you had a flat tire.

by Joe Carlos
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Precision Barrel Fitting, Part Eight

Part Eight is the last to appear in this series, but are you certain you’ve finished the job?
by Chick Blood
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Public Approval Of Hunting Highest Since 1995

The National Shooting Sports Foundation reports that a recent survey shows 79 percent of the American public approve of hunting. This marks the highest level of support for hunting since 1995, according to data compiled by Responsive Management, an independent research firm.
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