Thread: 1 shot groups (cold bore challenge)

Originally Posted by gimp

I have data from dozens of groups and several different rifles and there's no trend for the first cold shot to have a velocity that is outside of the normal spread or that is higher or lower. That said this is from fouled cold bores mainly rather than scrubbed back to bare metal.

Ok I would seem then that the lower first shot lower velocity has to do with the clean bore and not the cold bore.