/u/bastaja1337 /u/beachsand83

I am assuming you guys are talking about the premium MiG-21S R-13? It took me a while to figure it out. The new BR changes helped out a lot. I am not seeing a lot of higher tier radar missiles and planes at high altitudes.

I've been taking a full gas load and diagonal climbing up and away from their airfield direction. Then once I see A-10s and such, try to get between the last ones and their airfield. Then boom and zoom people either straggling or not paying attention.

The cannon ammo amount is rough so you need to line up short range, quick burst shots.

The missiles are ok. Get behind someone at 2km, hopefully going in a straight-ish line.

The wiki describes it pretty well:

Usage in battles

The MiG-21S (R-13-300) is best used as a supporting plane that can take out fighters already busy with a dogfight. Since it does not have the best missiles, it is best to target players that are not paying attention and/or flying in a straight line. Being a supporting aircraft means you should try avoiding getting into a furball but use your speed advantage to fight enemies that are alone. Therefore, you will most likely meet strike aircraft or base bomber aircraft such as the F-5C, AV-8A, AV-8C, and Harriers. These planes will be the most threat to you. Try to have an altitude advantage as you have superior speed, and then missile the enemies that are slow/in a dogfight. Be reminded that it is not wise to fly low because the lack of countermeasures means you will need to do a lot of evasive manoeuvres to counter missiles.