The war head isn’t as big of a deal- honestly the warhead it has is both A) copy paste for now for the dev and B) even at the same size, it won’t make much of a difference as most of the diameter was likely used for the rocket fuel given the pre burn weight and post burn weight currently in the game.
Again, the issue is the lack of total thrust because of the burn time being so low and the force being so weak. Given how much lighter the missile gets, it should be burning for significantly longer than it is now, or instead with significantly more force… And probably both realistically but, hopefully it’s patched even before the dev server is done so it can be tested before hitting live properly.
EDIT: Still not updated on the server unfortunately, figured it would be a quick numbers change but, nothing so far. On the test flight map, if you fire the missile around 400-500SPD right after you lift off the ground, the MiG-15 circling behind Mt. Suribachi is only barely hit at a firing range of 5km side aspect, and you can see before the missile hits it’s already getting slow
EDIT 2: On the same test flight, I flew to roughly 5.5km or so forward and away from the airfield, and fired an AAM-4 at a rough range of 28km when the higher altitude MiG-15 turned around. The missile did successfully hit said MiG though if it would have maneuvered it likely wouldn’t have. So maybe some figured were changed overnight after all, which is easily plausible.
EDIT 3: Doing a custom match, I found that the missile will still rapidly accelerate up to a speed around Mach 2.51 if doing Mach .89 (1070km/h SPD) on a cold map around 1.6km altitude. The issue is, without a long burn sustainer, it dumps all of it’s speed within 4-5km after reaching it’s loft. The upshot is that it does loft where I don’t think it did last night, but regardless the missile will drop from that Mach 2.51 down to only Mach 1 in around 4.6km of travel. Mind you this is with a proper loft to get the thinner air up higher. Missiles were fired against AI targets near ground doing anywhere from 650km/h to 450km/h at a range of 25km or so.
As a comparison, I took the F-14A for the AIM-54A missiles and fired two off on Alternative Spain, which I believe is considered ‘normal temp’, at a range closer to 28-30km at a pair of bombers moving with around a 20 degree offset from left to right, but probably more. The pheonix missiles reached a similar speed, however, even with as wide of a missile as they are and being off burn, they did not bleed nearly as much speed as quickly as the AAM-4 does currently, which leads me to think the drag coefficents were also copy pasted from something else onto the missile but, I’m unsure of that.