I don’t know a lot about that part of Ontario, but I think Whitby is a suburban community near Toronto? Without other information, I assume that this is a suburban residential area. If those three rounds hit my house while I was sleeping, I would consider that “blasting away”.
The fact he lied showed he thought there was legal jeopardy to his actions. If he was aware that his actions could get him in trouble, he should have clammed up and spoke to legal counsel.
If in a blind rage you murder the pedo that molested your kid, you’re probably going to jail no matter what. If you keep quiet, don’t obstruct the investigation and speak to police only with legal counsel, that time you spend in jail may be less.