Bastards value and consistency outwiegh EVERY other BB out there. I would never try and save $2 on a bag of BBs with the chance that is will damage a $1000 gun. That is not smart. Consistency and shelf life, as well as I have NEVER had a jam, even on a drum mag. I was given a competing "premium" bag for free, and decided to use them to burn off a few drums at a target....bad move. Looks like I stripped the gears in my mag not following my own advice.