I work for a nursery and have just finished collecting 500 lbs Quercus rubra acorns. We needed less than half of these for our own sowing. Are you interested in purchasing 250-300 lbs of these?
We buy a good portion of seed that we sell from nurserymen such as yourself. I am not sure if you float your seed before you sow it but we require that oak seed must be floated before it is sold to us. If you float your seed in water the good acorns will normally sink and bad seed will float. Sticks and leaves will also often float and are easily removed this way. Surface dry the seed after floating. Oak seed should not be allowed to dry out to much. Please let me know how many pounds you have after floating and drying.