The 34-year-old was made club captain at Ibrox ahead of the Irn-Bru Third Division visit of Elgin City and celebrated the achievement by scoring his 100th and 101st career goals in the 5-1 mauling of the Highlanders.
The Gers skipper said: "I'm delighted to get my 100th career goal. I was regretting telling people I was on 99 because I put pressure on myself.
"The first one was the type of goal the gaffer used to score and the second goal was all about great play from Andy Little to pull it back and I managed to put it away.
"I don't see myself as a prolific goal-scorer and I'm not setting any targets. Playing well and winning is all that matters."
But McCulloch admits the victory over the men from Borough Briggs is one that will live long in his memory.
He told the Rangers web site: "It was a day I will remember for a while. The gaffer told me on Saturday that he was going to make me the official captain and I haven't been able to stop smiling.
"It's one of the proudest moments in my life to be made captain. I have played with some great Rangers captains like Barry Ferguson and Davie Weir. Richard Gough was at the game on Sunday. I've got their numbers so I can give them a call if need be.
"To lead the team out in front of nearly 50,000 at Ibrox is something you dream about as a kid. It's a dream to play for the club but to become captain? That's something for the grandkids."