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Old May 10, 2013, 12:42 AM   #17
JohnKSa
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Join Date: February 12, 2001
Location: DFW Area
Posts: 24,930
NRA publishes a book that provides information on how to build a safe range/backstop.

The manual states that the slope of a dirt berm backstop should be as steep as possible, but not less than 45 degrees (1:1 slope). The manual also advises removing all rocks and other materials that could cause a ricochet.

It states that while natural hills can often be used as the basis for a dirt berm backstop, shaping the impact side is generally required to achieve the proper minimum slope.

The link is to an article that quotes the NRA Range Manual.

http://nssf.org/ranges/RangeResource...y%20Management

Your backstop is high enough, but the angle isn't steep enough.
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