.22 Caliber Rifle for Competition, Hunting & Improved Accuracy. Let's face it, Ruger 10/22 rifles are extremely accurate right out of the box. But if you could bring your groups down from 1" to 1/2" at 50 yards would you be happy to know that you own one of the most accurate rifles in the country. That's the claim of Clark Custom Guns. This video shows the procedures, tools and parts used to make your Ruger 10/22 even better.