Code:
Name Diameter Shot Weight Gun Weight Notes
Stirge 1.2-1.4 in 3-6 oz. 30-150 lbs. Swivel-gun
Naga 1.5-1.8 in 7-14 oz. 45-200 lbs. Swivel-gun
Manticore 1.9-2.4 in 1-2 lbs. 60-330 lbs. Swivel-gun
Bantam 1.2-1.4 in 3-6 oz. 200-300 lbs.
Dragonet 2.4-2.9 in 2-3 lbs. 150-350 lbs. Swivel-gun
Serpentine 1.5-1.8 in 7-14 oz. 300-400 lbs.
Harpy 2.6-3.1 in 3-4 lbs. 330-660 lbs. Light gun
Falconet 2.0-2.5 in 1-2 lbs. 500-700 lbs.
Peryton 3.3-3.6 in 5-6 lbs. 500-900 lbs. Light gun
Falcon 2.6-3.1 in 3-4 lbs. 670-1,200 lbs.
Medusa 8-8.5 in 20-30 lbs. 500-1,500 lbs. Thayan bombard(L)
Saker 3.3-3.6 in 5-6 lbs. 910-2,000 lbs.
Wyvern 4.5 in 12 lbs. 1,350 lbs. Light gun
Drake 4.1 in 9 lbs. 1,500 lbs. Light gun
Wyrmling 5.1 in 18 lbs. 2,000 lbs. Light gun
Eagle 4.1 in 9 lbs. 2,500 lbs.
Dragon 5.65 in 24 lbs. 2,700 lbs. Light gun
Griffon 4.5 in 12 lbs. 3,600 lbs.
Roc 5.1 in 18 lbs. 4,500 lbs.
Basilisk 12-12.5 in 60-90 lbs. 1-8 tons Thayan bombard(H)
Prices for a 'typical' example of each gun, from most to least expensive:
Basilisk --- $700,000
Dragon --- $425,000
Wyrmling --- $275,00
Medusa --- $225,000
Wyvern --- $220,000
Drake --- $150,000
Roc --- $130,000
Peryton --- $110,000
Griffon --- $100,000
Eagle --- $75,000
Dragonet --- $70,000
Harpy --- $60,000
Saker --- $35,000
Falcon --- $20,000
Falconet --- $13,500
Serpentine --- $7,500
Bantam --- $5,000
Manticore --- $3,500
Naga --- $2,000
Stirge --- $1,500
Note that none of these are exactly common and some of the larger cannon exist only as the work of a few master craftsmen or even only in prototype.
The magical versions of the Thayvian bombards are not available for purchase by anyone not in the service of the Red Wizards. There exist alchemical emulations of their bombards (these are at the higher ends of the weight range given), but the prices might be much higher and the effectiveness might be less.