Gamo Magum .177 (Mirrorbore).

Likes: RWS Hollowpoints.
Dislikes: Prometheus or other plastic-sabot pellets. (Don't know why). All over the place.
So-So: Wadcutters, unless the barrel screw is loose.

As a thought, sometimes it's as important to know which ones *don't* work so well with a particular model.

I wonder if there's a pellet and airgun wiki?

David.