Is there any difference?

Is there any difference between these 2 for tumbler media ?

http://www.harborfreight.com/25-lbs-fine-grade-walnut-shell-blast-media-92155.html

http://www.petsmart.com/product/index.jsp?productId=2752164

the only difference that there may be is the media from Harbor freight may be treated with a polishing agent. But it probably isnt. I would use the pets mart and get Lyman or Cabelas or Midway polishing agent and add it.

with either of these media you need to find out the size of the kernels. most reloading media is 1/8" or smaller. pet media on the other hand usually comes in two sizes, 1/4" and 1/8". if you go with the pet media you need to get the 1/8" or smaller or it will get jammed in the bottle neck cases real good. HTH.
Rick

I use the Zilla pet walnut bedding and it works pretty good.