Were you in violation of the range rules?
At my range no one under 18 can shoot with out parent or guardian in presence and any one under age 12 must wear both ear plugs and ear muffs. All people on the range must wear both eye and ear protection!If you watch some ruger rim fire videos ( plenty on u tube ) you will see many children as low as 4 safely competing!
Local ranges have rules determined by both the owners and the insurance company covering the property. I would check the range rules and you might have to go to another facility.
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