Not near the top end stuff some of you are using but I wanted something similar and landed on an Eberlestock F1 Mainframe F1, Superspike duffel, scoped rifle scabbard, and padded accessory bag. Like you said it isn't lightweight but I've carried some heavy loads and it does well. It is like a .30-06; does everything well enough but I'm sure there are a lot of things out there that'll do specific things better.

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