score:2
Wildes seems mistaken about the cannon's destination: it never went to Kamchatka. Stephan in The Kuril Islands cites Lensen in reporting that after their raids, Khvostov and Davydov headed to Okhotsk. Lensen also says that upon arrival Commandant Bukharin imprisoned the two and helped himself to the booty they brought from Sakhalin and Iturup.
The cannon appears to have arrived in Okhotsk, where it was possibly stolen for a third time.