I was curious about this myself, but one wobbles for real with a scoped weapon unless on a tripod and certainly its hard to keep steady when standing
Heres a link to mods discussing the sniper rifle, they may help (or not ) if you examine them in the GECK
http://loyalkng.com/2009/01/12/fallout-3-sniper-mods-snipe-them-before-you-even-see-them-or-try-to/
>SpeedCanHurt
>Posted 2/19/2009 4:22:31 PM
>Using the GECK, you can open up WeapSniperRifle and change the scope field of view - the lower the value, the further it zooms in. As for removing scope wobble, it >decreases as your small guns skill increases.<