Most brands offer some sort of artificial lighting or IR lamps and sensors for their Chronos. Might want to look into that area to help with the indoor lighting situation. Even if the vendor only offers a plug in transformer (PACT) for the alternative lighting, that can be substituted with a battery and some sort of regulator. IR sensors and lighting allow shooting at any time of day regardless of the sun position or even if there is no sun as in the shade.
5.56mm, reach out and touch something.
.458 SOCOM,reach out and knock something down.
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