Yet another Newb with a new Luger, and some post shoot questions.

[DonVoigt]

Originally Posted by Sky Zero

doesn't higher weight mean more gun powder, thus hotter? maybe I've been getting definitions of grains totally wrong

No,
the amount of power = what someone decides to put into the cartridge.

You can buy 124 gr cartridges(124gr is the weight of the bullet) loaded to 1000 fps or "hotter" ones loaded to 1250 fps.

The amount of powder is also weighed in grains, but WAY fewer grains than the bullet weight, perhaps 3.0 gr to 10gr, depending on the powder.