I think I am going to Re-Zero all of my Long Range Arms for 300 Yards. Take your favorite Killing Guns, get out your favorite Ballistic Calculator and really look at your Trajectories. Between your 0 yard and your normal 100 or 200 yard zero range, look at the highest point in the arc to that range. Now change your zero range and push it out to 300 yards. Really not much effective difference there is it? Now take a look at the trajectory between your zero to 400 yards at both 100 or 200 compared to a 300 yard zero. Here’s what I’m seeing. I hold on the Kill Zone regardless of range. No more of this “Hold on the top of it’s back” BS. At most, even with a gun that drops a lot, such as a .308 or .30-06, I might hold at the top of the kill zone – but I’m still aiming for Kill Zone and hitting in Kill Zone. This works out especially well with the Magnums and their flatter trajectories. The old stand by of 100 yard zeroes is still needed for some guns, but for your Hunting guns, it doesn’t make any sense. And that wild ass guess of “Two Inches High at 100″ is starting to kinda do the same thing, but without actually knowing what your gun is doing. So next time I go out to zero, I’ll start at 100 to know where I am at, then push it out and actually zero at 300.