Attention all...
The missile WAS NOT launched from Nilore,Islamabad. Only the Ghauri series is launched from somewhere in Northern Punjab.
The "news" has been mistakenly released most probably, because all the activity took place far south. So stop calculating distances from Islamabad. Shaheen series of missiles are ALWAYS test fired into the Arabian Sea from Baluchistan.
And there is NO WAY Shaheen-1A ,having only ONE stage, can reach above 1000 km (considering other parameters like launch weight,lenght,diameter too). Also, one simply CANNOT just fit in MIRVs into such a small missile. Then it would be MRVs (multiple re-entry vehicles), not MIRVs.
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LASTLY, the so-called "Stealth"...lol...The missile's ReV MAY have reduced RCS, but not the whole missile. Any long range radar can detect something THIS BIG. So please, fellow countrymen, stop fantasizing.
I do agree that the missile may have increased range (upto 1000 km), it may be faster, may have advanced counter measures to counter ABMs, better fuel, more compact and lesser launch preparation time.