Rebar in rocky soil with SDS hammer drill

Using SDS tool to drill into rocky soil, then hammer/tamp rebar in with a specialty bit. Rebar tamper ( https://amzn.to/2TrTAiK ), Bosh 5/8" 39" bit ( https://amzn.to/2TW602o ), Dewalt "MAX" SDS, which is SDS Plus fittings ( https://amzn.to/3xixaPs ), and my ear pro while I'm at it ( https://amzn.to/2SoHirf ).