223 wssm with 80 gr bullets data?

[c-cargo]

Maybe this is an old question I searched old threads but cannot find it
anyway does anyone have any data for the new sierra ,hornady,
80's in 223 wssm I am considering getting an ar-15 from accy-systems
apparently it is offered in 223 wssm
let me have it if you think it's a bad idea from the getgo 223 wssm seems to have plenty of neg and pos info out there....but it STILL interests (intrigues) ME...Big Time
blame it on "half mile 22's article in natn'l rifle"
any thoughts or DATA would be appreciated
I am new to POSTS
just discovered the forum looks like a very USED data base with alot of GOOD info
Fire away
Thanks