Rub on Connie is she started with a main battery of 24# then derated to 18. Let's take a look at her relative to HMS Sybille, the best in-game Hebe, and HMS Amelia, her closest match in broadside:



Ship HMS Amelia USS Constellation 1799 USS Constellation 1797 HMS Amelia USS Constitution 1797
Length (m) 46.94 49.99 49.99 46.94 53.04
Beam (m) 12.2 12.5 12.5 12.2 13.16
Tonnage ~1091 1278 1278 ~1091 1576
Burden 4 ? ? 4 5
Boxes 9 9 or maybe 10 9 or maybe 10 9 9
Veer 6 5 to 7 5 to 7 6 5
Man Deck E ? ? E L
Main Battery 28x18# 28x18# 28x24# 28x18# 30x24#
Sec. Battery 6x24#crde 10x24#crde 10x12# 14x32#crde 16x18#
Ter. Battery 10x9# NA NA 6x9# 14x12#
Total BSW (kg) 167 169 180 228 267
Main Gun-line 4-4-3-2-2-2-2-1-X ? ? 4-4-3-3-2-2-2-1-X 5-4-4-3-3-2-2-2-1-X
Based on this, I would stat Constellation as a slightly beefier HMS Amelia, maybe the difference between them an extra box like the Light vs Heavy Mahonesas.