So I am a day or 2 away from purchasing a rifle with scope combo. I read on the website today What exactly is "Airgun rated". The rifle I want is .308 but I am considering .243 or .223 because of availability. Its the howa / Axiom 1500 that includes the Nikko Stirling scope, but is Airgun rated good enough for a .308 or even a .243 or .223? Seems to me that the kick of a .308 would be many times more than an airgun but maybe I'm just misunderstanding what it means. Any advice on this would be helpful. Thanks!