2000-01-04 19:09:39+01 by Dan Lyke 0 comments
From danlyke@flutterby.com Tue Jan 4 10:09:36 2000 Received: by toohey.flutterby.com; Tue, 4 Jan 2000 10:09:36 -0800 Received: by francon.flutterby.com; Tue, 4 Jan 2000 08:55:03 -0800 Date: Tue, 4 Jan 2000 08:55:03 -0800 (PST) From: Dan Lyke <danlyke@flutterby.com> To: dbl-quickies@flutterby.com Message-ID: <pine.LNX.4.10.10001040854040.2794-100000@francon.flutterby.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII The Effects of Black Powder On Aluminum Disk Drive Platters Two identical disk drive platters, 170 mm radius x 1.5 mm thick aluminum, were shot at with a variety of black powder and modern arms at 3-10 m. The black powder arms used spherical lead bullets; the modern arms used either copper jacketed or lead bullets.