Astra has a range of 80 km and the new missile will surely have 120 km+ range, note the 'long range' while Astra is a medium range AAM. IAF is eying for Meteor or R-77M.
I think one thing needs to clarify about AAM missiles' maximum range is that there are 3 kinds of maximum ranges
1. the maximum dynamic flight range which includes the glide range
2. the maximum flight range by motor
3. the classic max engage range (with all favorable conditions, height, speed, etc``)
the first one tends to have the longest range but the stats is usless in real combat situation and it is just a fair judgment on missile's areodynamics.
the second one which is mostly quoted by manufactures as the attribute. at the moment none of any warharden AAM missile has over 100km ranges (including ramjet) down to this category.
and the 3nd range that matters the most in real combat situation. called none escaptable zoon or classic engagement range!
for example; in the best senario of F-22 carrying AIM-120 at optimum high altitude and speed of 1.8M, when the opponent heading directly with speed of 1.2M the maximum engage range of AIM-120 is just over 50KM! which means when the target steps in 49KM then its death zoon! (thats one of the reasons that manueverbility is still the key factor to 5gen stealth craft, because no matter what advanced weapon u carry, if u couldnt manuever to the favorable missle launch position and speed faster than ur opponent does, you are likely to lose)
but of couse in that senario F-22 can fire missile beyond 49 KM but the killing ratio will drop dramaticly! few high Gs can easily escape the hit!
so what IAF considering is not to buy the missile has the 'highest' range, but the one has the longest 'classic engagement range' plus superior capability to deal with jams```in this case, russians are really out the picture`! and in the future ramjet engine is going to play the key roles in future MAAM`as it seems everyone is developing it``