There is one summary for H.R.3140. Bill summaries are authored by CRS.

Shown Here:
Introduced in House (02/03/1998)

Amends the Federal criminal code to treat the following as an antique firearm for purposes of the Federal firearms laws: any firearm in which black powder and a projectile are loaded through the muzzle, and such powder is ignited by a percussion-activated ignition system to expel the projectile, and which does not use fully assembled or fixed, rimfire, or conventional centerfire ammunition.