My brother in laws ex father in law died a couple years ago and the family was selling off all his firearm related stuff. He had an assortment of powder and I got a new plastic style bottle of RS which was great, but the top it off, one of the OLD style paper/tin can bottles of unopened RS! I popped the seal and there was zero clumping and it had its normal fresh smell. I want to compare it to a new bottle i got last week and see how bad the stuff is, if it is!