I have shipped a lot of boxes that have extra fibered tape when mailing lead or reloadable brass. Never a negative comment because I usually stop at 50-55 pounds. I use the same post office so there is less chance for misunderstanding. The only comments I get are ones commenting that the box is prepared to arrive intact no matter what. And when a 75 year old man puts the 50 pound box on the scale, there is not a lot of whining by the clerk. I feel sorry for those that have less than cooperative mail clerks. Maybe I am just lucky.