The midfielder was playing his first game since returning from international duty with England's U19s, and put in a commanding performance as Martin Hunter's men played out a thrilling 3-3 draw.
It was Chambers' injury-time strike that rounded off the game but, with Saints having led with 20 minutes to go, the 17-year-old was somewhat disappointed the team didn't plunder all three points.
"I'm delighted to get the goal," Calum told Saints Player
, "but we should have held onto the lead.
"Obviously we didn't, so we had to take our chances when we got them and I thought I'd have a shot at the end.
"Luckily it went in – I looked back about three times to see if it did! It's another goal for me, which is good.
"I thought we deserved that draw, if not a win."
Chambers, along with Saints teammate Jack Stephens, recently spent time in Tallinn after receiving his first-ever call into the England Under-19 squad for their 2013 UEFA European Under-19 Championship qualifiers against Estonia, the Faroe Islands and Ukraine.
And, having helped the Young Lions top their group and scoring in the 6-0 win over the Faroes, the youngster was pleased with how his time away from the south coast went.
"It was a brilliant experience for me – I really enjoyed it," said Chambers. "I got myself a goal, which is good, and all the lads were great.
"Hopefully I can go back soon in the future."