I use cedar shavings. They are light, support well, and are aromatic!Pawpaw wrote:Instead of a taller rest, I just use one of the 20-round mags that came with my AR.
If you want to use sand bags but don't want the weight, you can fill them with walnut media. It's available at pet stores.
One example here.
http://www.lowes.com/pd_4732-55854-I_0_ ... d=50006484