Sentence:  The accuracy of the Jet cartridge <WSD>is</WSD> fine ; I tested it in my scoped S + W and it was good enough to allow me to hit a chuck with every shot at 100 yards if I did my part by holding the handgun steadily . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)