US3396661A - Progressive burning firearm propellant ...
US3396661A US56764866A US3396661A US 3396661 A US3396661 A US 3396661A US 56764866 A US56764866 A US 56764866A US 3396661 A US3396661 A US 3396661A Authority US United States Prior art keywords propellant projectile pressure burning discs Prior art date 1966-07-25 Legal status (The legal status is an assumption and is not a legal conclusion.