err, no
all non FAC rifles, can only put out a max 12ft lb, a springer can and will have the same power,
you can sit shooting rats with a springer all day, a cartridge type rifle, if using the small bulbs, will give you maybe 15 consistant shots before dropping off, the larger canisters on the king rat catcher boasts 200 shots, tempreture can affect this though
just looked at the link, wouldent touch it with a barge pole, trouble is, once you're shot a few woodies or rats in a barn, you'll want to try further shots, or bigger quarry, a mate of mine bought one of these, even after I tol