Back in the early 70' s I did a lot of backpacking, that was when I had a strong back and good knees. 60-70 lb loads were common for an enjoyable week of camping.
I still like to camp, but not with any sort of backpack. Nowadays the load is carried in a canoe, on a motorcycle or in the back of the truck.
These new additions to cast boolits will be great.
Might tell some stories of adventures and misadventures of backpacking.