Go to Rimfirecentral.com and search for a link about shooting tables. There is a guy that made some that looked very sturdy and were very nice. He should be able to help you out, but the pictures are nice enough to help a capeable workman<---not me.
hope this helps.
chris


here you go
http://www.rimfirecentral.com/forums/showthread.php?t=63800&page=1&pp=15&hi ghlight=shooting+table+daughter

Another
http://www.rimfirecentral.com/forums...homemade+bench