from a high powered rifle.
Fabulous, even legendary journalistic nonsense-expression, isn't it?
To the media, rifles are always "high powered", aren't they?
Anyone ever seen a press report of a "Low powered rifle"? After all, no one here uses pipsqueak little pop-guns like .22s, do they?
Pavlov rules, OK?
(Let's face it, they'd be reported as "bullet holes from a high-powered rifle" even if they'd been made by an air gun or a catapult!)