This is real long range shooting

[gcode]

At the end of 2020 the U.S. Army ERCA (Extended Range Cannon Artillery) finally achieved a decade old goal of using a longer barrel cannon firing an extended range Excalibur GPS guided shell to accurately hit a target 70 kilometers distant. Over a decade ago it was realized that this required three new technologies. The primary need was a version of a reliable GPS guided artillery shell, like Excalibur, that could handle the more difficult task of keeping the shell on course over such a long range. The first version of Excalibur only worked at ranged between 20 and 25 kilometers. Second, there had to be a longer barrel 155mm artillery system that could fire the longer-range Excalibur shell. Finally, there had to be a new propellent that could provide the power to push the ERCA Excalibur out to 70 kilometers.

For the math challenged, that's 43 miles
https://www.strategypage.com/htmw/htart/articles/20210124.aspx">//https://www.strategypage.com/htmw/htart/articles/20210124.aspx

[Matthew Hajicek]

Impressive.  From what I understand, one of the most difficult challenges is making electronics that can survive the g forces of acceleration on firing.

[gcode]

I wonder what the time in flight is for a shot like that

[Incogneeto]

I wonder what the time in flight is for a shot like that

I wonder what it sounds like coming in??

[Incogneeto]

Maybe by the time you hear it , It's too late.

[Rstewart]

I may be currently building parts for that system....

[Matthew Hajicek]

I believe they're hypersonic.  You'd probably hear an interesting sound after the impact, if you aren't at ground zero.