An Active Hunter In Hokkaido Has Been Thrown Into A Different World
Edit: link removed by mod RB as per forum rules.
So it is an isekai. However, read this, instead of a usual truck this guy gets killed by a bear. In Japan! And he gets his shotgun and a connection to a sporting goods store in Japan!
Despite all that, this is an entertaining read. Supposedly both LN and WN are complete (LN at 3 volumes) so that would be a short read.
Saw the manga for this, seems like it would be something reasonably interesting to read if it's only 3 volumes.
Manga licensed by Seven Seas.