to 30 yards when the advertised range/velocity figures are derived to a BC ; as is the plausibility of 1.02" grouping Gamo advertise at the 30 yd range. Putting that BC into context it is about the same or not quite as good as a .22 ball shot.
My video does indicate that flight to 30 yards may be OK for a 1.02" group - then, as Robert would say, they get "stupid".
So yes I agree, plausible, and as is always the case, it is up to the consumer to assess the product's actual performance value. .......... Best regards, Harry.