FK – The plane of the sights intersect the plane of the round a little farther out, or something like that.
I learned this lesson many years ago on an old flat-roofed dog house. I was shooting my first deer rifle, a .243 Winchester Mod. 70 at a cow pie and instead of seeing dried fecal matter fly into the air it was roofing shingles 3 feet or so from my face.
A few years later I rode around with an older cousin in his Chevy Luv pickup during deer season for a day. This was in the day when ‘road hunting’ was not so frowned upon. We didn’t see anything but a day or so later he threw his .700 magnum across the cab of the truck and put a hole through the roof and out the passenger window or just above it. If I had been sitting there I might not be sitting here.
And please don’t lean a loaded weapon up against a truck or any smooth surface. At least catch it on something so it won’t fall over. I did see him flip the safety on.
It’s always best to try to think before one engages one’s mouth, keyboard or trigger, and probably a few other things