increase weapon stats range for default settings?

but at the high end it stops mattering, best to keep them centered on the edge of balanced

some way to increase variety in weapon stat randomization would be nice though

No files, tests, or entry points are named. Start by locating the weapon stat randomization and default-settings handling, then clarify what wider range and balance target are intended; done should produce more varied default weapon stats without undermining balance.

Written by the indexing model from the issue text.