Accession Number:

AD0499379

Title:

Interior Ballistic Studies. Initial Rapid Fire Tests of Picrite Type Cool Powder in a 3 in./50 Caliber Gun Mark 22 Mod 4.

Descriptive Note:

Partial rept. no. 23 and Final rept.,

Corporate Author:

NAVAL PROVING GROUND DAHLGREN VA

Personal Author(s):

• Bachhuber, J. A.

Report Date:

1950-08-09

Pagination or Media Count:

22.0

Abstract:

This report covers initial rapid-fire tests 1000 rounds of picrite type cool propellant in a standard Mark 22 Mod 4 3 in.50 caliber gun barrel. The barrel was fired with schedules of seven 25 round bursts with 20 second intervals between bursts. Projectile velocities, range dispersion, bore gauging and inspection data, and other ballistic information were obtained. The objective of this test was to determine the wear-rate of a standard 3 in.50 caliber gun when fired with the above schedules using a picrite type cool powder.

Descriptors:

• *GUN PROPELLANTS
• INTERIOR BALLISTICS
• GUNS
• GUN BARRELS
• EROSION
• EROSIVE BURNING
• NITROGUANIDINE
• LIFE EXPECTANCY(SERVICE LIFE)
• WEAR RESISTANCE
• AUTOMATIC WEAPONS
• CYCLIC RATE
• NAVAL GUNS

Subject Categories:

• Ammunition and Explosives
• Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE