Go to:

http://boards.ancestry.com/topics.Military.united-20-states.civwar.ms/55.1.1.1/mb.ashx

I believe the map cited is at:

http://usgwarchives.org/maps/mississippi/statemap/msr1888s.jpg

This depicts Mississippi Springs to the south of the road from Raymond thru McRaven.

My scaling shows Mississippi Springs to be in the location I previously noted, some 4-5 miles, or so, East of Raymond