Re: ARE YOU A BAG SQUEEZER?
Perfect bag filler (for feel) is a grain called millet. Flows just right.
It's heavy. Not humping a 2lb rear bag at a match. Plus, if it gets wet, it can rot, plus rodents might be interested. I use this for load development, tiny group shooting and F class.
For super lightweight and "good" feel, fake snow from the craft store is excellent. My 3"x6"x9" tactical pillow rear bag weighs 5oz, and doesn't absorb water, so doesn't gain weight when wet.