I have been looking for something similar to your requirements for a long time. Bottom line is, I gave up trying. Initially I settled for a Swarovski X5i 3.5-18x50 which although excellent, was SFP and eventually I decided to change this.
The only real option I found was the Leupold Mark 5HD 3.6-18x44 with a TMR reticle. Off the top of my head, weight is around 750g. But for north of £3k here in the UK, it was a non-starter.
As mentioned, a Schmidt &Bender Ultra Short similar to that of
@ejg may fit the bill. But personally I sacrificed a bit of weight to achieve the outcome for a bit less money.
On both my rifles, I have put IOR scopes and they are excellent. On one, I have the IOR Ghost 1-10x26 although this probably wouldn’t give you enough desired mag. I say desired because I can comfortably hit a 4 inch gong at 570 yards on x6 power so you may not need as much as you think. The Ghost weighs in at 820g and although it’s not your traditional hunting scope, it does the job extremely well.
The other rifle has the IOR Breaker 2-16x42. This is heavier than the Ghost (990g) but maybe more suited to what you are after. FFP useable MRAD reticle, MRAD exposed elevation (locking) and windage turrets. No concerns, at least for me with 90% light transmission. Very good quality optics and dependable tracking - definitely worth a look.
Both are around the £1800 mark here and well worth the money.
K.H