Just got the Nosler Wby 257 unprimed brass in and it's awfully pretty. Weighed 10 samples and are 210 grs + or - .1 of a grain with a length of 2.535. Weatherby factory brass weights exactly the same with a little more variation in weight + or - .2 of a grain, but those were factory loaded, fired, cleaned and trimmed which no doubt accounted for the little higher wt variation. Not too shabby on both of them.