I find the 1077 exceptable for pest control, we have fruit trees that the rats love to pillage, and so I got my 1077 for that purpose.
When I got it the thing shoot only flyers (even with supermatch), on a hunch I loosened all the screws, the slowly tightened them back up, then it would shoot straight.
I attached a 4x32 scope, it would shoot 1 ragged hole at 25 feet until about the 20th shot with a powerlet and supermatch (with an ocassional flyer - stiff trigger )
note: you have to wait a minute between shots, or you get inconsistant shots.
5 years later and a few thousand pellets through the barrel it can still shoot consistant, I have done many a head shot on rats at around 25 - 30 feet with crossman 10.5gr, and also taken many with my now favorite pellet, the 8.8gr beman crow magnum hp, still very accurate, and still a quick take down with a side shot.
I shoot only rats, and we have so many birds and squrrels around here (my wife loves them) so pest control is the pellet gun, poison is not an option.
I'd shoot the pegions, they are a pest, but my wife says no.

even the crow is safe.
Anyway, it's not something I'd use for much bigger than a rat, and for that it works well.
George