I am usually in the 35 lb range for 5 days. I can be as low as about 16 not including food / water / clothing / kill kit. That includes tent / pack / sleep / rifle / optics etc. I think getting below low 30 all in requires considerable effort in most cases.

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Backpacks for backpack hunting https://seekoutside.com/hunting-backpacks/
Hot Tent Systemshttps://seekoutside.com/hot-tent-combos/