For anyone that needs a good scale for weighing barrels, guns, anything, here is a site that auctions them very cheap. I got one for $.99, shipping was close to $10.00. The weight compared to the U.S. Post Office is exactly the same. You can buy them in different weight classes. The one I have is for 50 pounds. Comes with battery use and AC adapter.

Also, I have no affiliation to this.

http://stores.ebay.com/Just-Pounds-and-O...634Q2ec0Q2em322

David