Letter: S

Firearm which fires, extracts, ejects and reloads once for each pull and release of the trigger. Also called Self-loading or Auto-loading.

A self-loading, magazine-fed firearm in which each pull of the trigger results in a complete firing cycle from firing through loading. It is necessary that the trigger be released and pulled for each firing cycle. See

The term for a stock which has been rough shaped and partially or completely inletted.

A firearm stock that has been machine inletted and requires additional hand fitting to achieve proper fit. Also called Rough Inletted.

A bullet with a partial jacket exposing a lead nose.

A projectile having a jacket exposing a lead nose with a cavity.

A centerfire cartridge having a case head only slightly larger in diameter than the case body and an extractor groove just forward of the head.

A projectile with a distinct shoulder and short truncated cone at the forward end.

A method of determining the sensitivity of primed cases held in a specified die and subjected to a range of specified firing-pin blows imparted by a freely falling ball. Commonly called Drop Test.

The acronym for the Sporting Arms and Ammunition Manufacturers’ Institute.