Peter Kemp peter_n_kempathotmaildotcom@ wrote in message . ..
On or about 27 Dec 2003 19:04:58 -0800,
(Tony Williams) allegedly uttered:


They were interested in an AP for anti-tank purposes and a
tungsten-cored 20mm APCR was developed by Janecek (of Littlejohn
squeezebore fame). Penetration was spectacular (figures range from
45-65mm) but it seems there were ballistic problems and it was never
adopted. The USAAF had a plain steel AP shot, but AFAIK the RAF never
used one.

Tony, fascinating as always, but I have to ask - APCR? Armour Piercing
mumble mumble?

http://www.quarry.nildram.co.uk/Glossary.html
APCR armour piercing, composite, rigid: shot consisting of a
penetrating core (usually of tungsten alloy) enclosed within a
light-alloy body, which travels as a unit to the target

Also you might want to take a look at this:

http://www.quarry.nildram.co.uk/WW2guneffect.htm
WORLD WAR 2 FIGHTER ARMAMENT EFFECTIVENESS

-HJC