The packages of 65lb cardstock I buy also have 176gsm as the weight. That matches the information found in the Cover stock column on the chart I use.
I have checked out the various inputs on that chart with calipers and what is on the labels of the other cardstock I buy. So far it has been a match between what is on the chart and what is on the cardstock labels for all of the other weights of cardstock I have purchased.
