A friend came over to shoot in my brother's cornfield (across the road from my place). I have a 100 yard range but the cornfield offers up to 800 yards in theory (no good backstop) but does have excellent 300 yard backstop. I just never go down there because I don't shoot that far when hunting, and besides....I'm too lazy...
I tried to let him use my Bullseye Target Camera but we couldn't get the software installed because it wasn't on his phone at all and it wasn't on my 5 year old phone since I've not used it in about 6-8 years. But neither of us knew our Google passwords and we guessed too many times prior to admitting 'forgot password' and got locked out for an hour.
So we just shot and walked...
He took one shot and we walked - nothing on paper (3 ft tall 4 ft wide). He'd aimed six inches above the central bullseye.
I was pretty sure my 308 Win was sighted in at 100 yards (been a few years since I shot it, as I prefer leverguns), so at 300 yards I might be at least a foot low, so aimed about a foot high (lots of mirage through the scope by the way). My shot was 14" below aiming point (so about 2" below where I wanted to hit), and 4" to the right (there was a really brisk wind)...
He wanted to keep shooting and sighting in, as he's preparing for a Montana hunt, but when he asked me if I wanted to keep shooting, I'm like "No way - I was only 4" off to the right and 2" low - I'm either that darned good, or just lucky and my next ten shots will be all over the place. If I'm actually that good (I doubt that), I don't NEED to shoot any more shots, and if I'm really lousy and that was just a lucky shot, I don't WANT to shoot any more shots...
The gun was a stock Savage 'Hog Hunter' with a 4-16x Bushnell cheapie scope, and Remington 150 grain regular 'FMJ' ammunition.
I did have some gun-envy though - my friend has a Ruger GunSite Scout rifle in 308 with a Leupold 2-7x scope (perhaps not the scope for 300 yardss though). I'm betting by the end of the day he'll be on-paper, and on-bullseye consistently.