My first time shooting past 300yd, at our club’s annual “Shoot what you Brung" Prone Day. I was shooting a Rem700P 308WIN 24in barrel, with SWA 175 SMK and Bushnell 6-24x5- FFP scope, on 20x (glass gets hazy past 20x). The stock is OEM with an adjustable cheek riser added. Sunny, low 90s, very...