@demchocholips have you heard of the Mantis X?
https://mantisx.com/pages/press-media
It is a device you attach to the picatinny rail in a pistol or rifle, it monitors all your movements in near realtime and offers analysis of what could be improved and what is wrong (e.g. breaking wrist up, etc).
I got one last December is it truly works towards improving grouping and precision. It is a great way to keep training when you are unable ot visit the range.
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