Never shot a .25 to be honest. Last time I went seriously ratting was on a mates farm back in the '70's, think a Diana 27 .22 c. early '50's was the tool then.
Forgive my ignorance - at 7 yards wouldn't open sights be just as easy, rather than a scope? Not being funny, just curious.
My only recent experience of rats is finishing off damaged ones my feral ex farm cat used to bring back, when I lived in Malvern. Saw more rats there than I ever do out in the village.
ATB
Bru
Webley Mk3 x2, Falcon & Junior rifles, HW35x2, AirSporter x2, Gold Star, Meteors x2, Diana 25. SMK B19, Webley Senior, Premier, Hurricane x 2, Tempest, Dan Wesson 8", Crosman 3576, Legends PO8.