The five-way tie for the lead matched the Buy.Com Tour record for most players sharing a lead after the completion of a round. This marked the fourth instance where five players shared the lead with the most recent coming at the 1994 New Mexico Charity Classic.
Gene Sauers, the overnight leader, shot a 2-over-par 74 and shares sixth place with Craig Bowden (68), Andrew Morse (67) and Lucas Glover (69). The group stands at 5-under-par 137, one shot off the lead.
Moore struggled to a 1-over-par 37 on his first nine, the back nine at Kemper Lakes Golf Club. He caught fire on his second nine, vaulting him into contention.
He collected four birdies and an eagle over his first five holes and hit a 9-iron to 12 feet at the eighth to set up birdie. He had a chance at the outright lead but missed a 10-foot birdie try at the ninth and settled for a 7-under-par 29 on Kemper Lakes' front nine.
'A nine like that hasn't happened to me in a long time,' said Moore, currently third on the tour's money list. 'The last five tournaments or so I've been hanging around the cut line and it's really tough coming from six or seven shots down.'
Moore is a two-time winner on tour this season and if he can hang on throughout the weekend, he will earn the battlefield promotion to the PGA Tour for winning three titles in one season.
Barcelo also opened on the back nine Friday and took advantage of the par-5s. He birdied all four par-5s at Kemper Lakes and made par at the 14 remaining holes for a bogey-free round of 68.
'My round wasn't really exciting, it was just solid,' said Barcelo, who leads the tour in par-five birdie percentage. 'I wasn't hitting it two feet or anything, just lots of fairways and greens and I made a couple putts on the par-fives.'
Walker mixed six birdies and two bogeys for a 4-under 68 Friday.
Wilson overcame a double-bogey and two bogeys over his first 12 holes with four birdies to post a 3-under-par 69.
Stockton had the lead to himself until reaching the par-3 17th hole. He hit a 5-iron off the tee and missed the green, but chipped to eight feet. Stockton missed the par-saving putt to fall back into the group at 6-under-par.
'I didn't miss a shot at that hole and I made four,' said Stockton, who shot a second-round 70. 'You have got to play smart on this golf course or it'll jump out and bite you.'
The 36-hole fell at even-par 144 with 60 players advancing to the weekend.
Full-field scores form LaSalle Bank Open