One other comment on the OP. I tend to trade around a lot and always stock up on ammo for oddball guns, which I end up not using. Used to buy and sell a lot of items as a hobby, and used 3 local auctions a lot. Every 10 years of so, I would include a pile of ammo with the orher items I placed in an auction. The auctioneer would divide it into several auction lots based on type. I was always shocked at the ridiculous prices I got; higher than I thought it would cost new even after paying commission. If you are having an estate audtion anyway, put it in and let the auctioneer takecare of it. We have had five different estate and moving auctions in the last 20 years, and each time my wife and I would estimate what our outside top guess would be if we sold it, and always got at least twice that much or more. There are so many small items you don't consider that bring a lot of money that would likely go to Goodwill or boxlots if you were doing the selling. One of the auctions took two auctioneers in two rings for two days to sell it all, and had 1200+ items. It ended up bringing 1/3 of the price the home brought at a subsequent sale.

Talk to your local auctioneer if there is a significant amount.