I generally zero off my bipod with solid rear support. I have two socks filled with rice or sand etc. Alternate to the bipod I have a simple caldwell rest for the front of the rifle and I still use the socks for rear support. I generally tend to use caldwell rest when i’m doing load development shooting off a bench or something. Regardless of what exact system you use, the key is being absolutely solid. If you are not steady and wavering off your point of aim during the zero then you need to adjust and get it right and solid. Minimise shooter error as much as possible.
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