Not bad as I recall. Don't remember being too impressed or unimpressed. Didn't try too many loads (NO SABOT LOADS) though. I think the rifle would do quite well with the open sights and a sabot round. If you could figure out how to get the scope base on their nice and solid, it would surely do better than my results.

The mount base was included with the rifle I bought - but I don't know that it will be with the Cabela's models. My guess is yes since there really is no other source.