Anybody worried about keeping "hunting gear" stored compressed in your training pack year round? It was my impression you need to leave things uncompressed and not squished into weird places until you need to pack it for a trip. I'd hate to trim with expensive gear all year long to find out it's not up to a Backcountry hunt come game time.
I've always used sand or kitty litter as a weight in my pack because it's cheap and if I had to dump it I'm not losing anything expensive or hurting the environment.
As hunting season gets close I start training with my full kit. The only exception is my sleeping bag. I leave it hanging in the closet, I fill its stuff sack with a blanket so I have the same volume and close to the same weight.