Damn, should have posted in the Missouri hometown forum but anyway...
Check out Mikes Guns on old hwy94 just up the road from the white castle.
Also check out mid city gun and coin in bridgeton, lots of C&R stuff there. The new Gateway outfitters in cave springs (nee Dunn's) is nice too and Nassau off of the hwy 70 south service road (by the auto auction) is worth dropping in on.
C&S is well worth the time, class three goodies all over the place. If you are into reloading then Grafs on 5th street in St. Charles is a must see, it is the only real reloading shop in the area.
Bass Pro right off of 5th street is good for more than shooting supllies, they ahve loads of neat things there for all your outdoor needs.
If you have any questions drop into the Mo hometown forum and ask away. We are a friendly bunch and don't mind offering a helping hand at any time.
GaryM, formerly of St. Charles.