Thanks everybody for your comments.
I believe the sample I have for the origin of wounds is large enough in statistical terms (3,686 individuals) to be useful. It is quite near what Corvisier (L'armée française de la fin du XVIIe siècle) mentions from records at the Invalides: 68.8% small arms, 17.1% steel, 13.4% artillery. But, as always, only the wounded.
I'll pursue Wu's leads on Austerlitz and Eylau, as well as the Russian paper.
Jorge