Jorge, I’ve read several articles that said the HIMARS that we’re sending them had a range of 75km.
Jorge is busy Googleing.
You are right that the standard rocket fired by the m270 and the HIMARS has at least 70 clicks of reach.
There is lots of work that has been done to significantly extend that reach and who know the exact rockets we and the Britts have supplied with the launch systems.
I expect a lot of the rockets are older stock but the 70 click reach is much greater than the 155mm tubes have even firing Excaliber rounds (which the Ukes probably did not get).