Engine power is a product of its overall displacement, but two similarly-sized engines with different bore and stroke characteristics don't perform the same.

Big bore AR 15s are interesting concepts and the .458 SOCOM is one of the more fascinating designs. It's a dedicated man ...

** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** Among the more controversial types ...

Ammo manufacturers jumped all over the 350 Legend, and we got a wide array of high-quality factory cartridges.

Bore and stroke do far more than define engine size. They help shape airflow, piston speed, torque delivery, and rev ...

Everybody knows that the right way to build an engine is to use precision measuring tools to establish the proper internal engine clearances. The problem used to be that these tools were expensive ...

** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** Henry Repeating Arms has kept its ...

Horizontal directional drilling (HDD) is challenging and difficult work fraught with unknown obstacles. While it's not possible to eliminate every obstacle, bore planning software tools developed by ...

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