<html> <body> Hi, Ric, At 11:37 AM 3/13/2007, you wrote: <blockquote type=cite class=cite cite="">Hi Horace And here I was thinking that the 150 stood for milimeters... hehe.</blockquote> Well...if we're talking about field or tank-mounted guns, that would be right.  In this case, we are talking about the measurement of the mass of the bullet in grains. Best. Horace <blockquote type=cite class=cite cite="">RicB    Hi,         > Nah... its a very large gun. I think they use them in Texas.        RicB    Not a gun...a cartridge, more accurately, the bullet used in the    cartridge.    The most popular is the 7mm PR7SM2, described on the Remington website    thusly:    "The Core-Lokt bullet design is the original controlled-expansion    bullet    and one of the most effective ever developed. Its progressively tapered    copper jacket is locked to a solid lead core, promoting perfectly    controlled expansion and high weight retention for absolutely dependable    on-game results."    Best.    Horace </blockquote></body> </html>