That was me. There's a lot that goes into dependably making those shots. It starts an accurate gun and an accurate load. My gun is bedded and pillared. 200SW and 110gr 777 isn't the most powerful load out there, but it is best balance of flat shooting and accuracy in my gun so that's what I use.

I'm actually not a big fan of the BDC reticles and such. You give up a lot of precision when you start holding over or depending on reticle marks that are not specifically set for you gun. And if the deer is 270 yds, exactly where between marks do you hold? That's why I shoot a tactical-style scope so I can always go the exact number of clicks for the range and hold DEAD ON to where I want the bullet to go. That's as precise as it gets.

You should only need roughly 2X for every 100 yds. I have a 3.5-10X on my gun and the deer was plenty big at 338 yds on 10X.

You need to practice until everything is second nature. I have a drop chart taped to my gun but in all the shooting I did that day, 4 deer in 20 minutes, I never once thought to look at it. The drops and wind were second nature after all the practice.

The position is also important, I only shoot over 100 yds if I'm on a bipod and only over 150 yds if I'm prone on the bipod.

The shooter has to have the skills and trigger control to reliably take those shots too. I shot competitively in college and so by putting reasonably light pulls on my triggers I have no problem making good shots when I need to.

As for time-of-flight, a deer can ALWAYS move faster than you can predict. The last deer I made a bad shot on, which has been about 7 years, was a buck at only 40 yds. The sight picture looked good when the gun went off, but somehow he managed to spin 90 degrees and take the bullet in the back leg before the round got there, leading to a long tracking job. I'm much pickier about longer shots, the deer can't be nervous or ready to move. But the possibility is there at any range, they are not static targets.