just get a 20 degree base for your rifle it will work fine,if you like that 280 ai I would save that rifle to hunt with and just get a different rifle and what ever cartridge you decide on. but I would put a target Nightforce scope on it with a picatinny 20 degree base and rings,many use including myself a Nightforce 12-42x56 target scope with a target dot. good luck,Pete53
1200 minutes of angle eh?
