I have 78 pieces of 8mm Mauser if anyone wants it, I live in Austin, or I'll ship it if you pay for shipping.
To make shipping worth while, you should hold the brass until you get enough to fill a small flat rate box. USPS will let you ship the 4 x 6 x 1 box for about $4.50. That should hold about 100 typical rifle cases.
If you reload, trading for brass you need ( or may need in the future) is a very viable option. Post more specifics about what you have and what you need and you will likely find someone willing to trade.
I have 1000 round Lake City loads in military ammo cans for 425.00. Normaly I sell 1000 for 300.00 BUT, Ive had to pay so many hazmat shipping fees ordering primers from where ever I possibly can.