The Firing Line Forums - View Single Post - What's the thought on the Bushnell DOA 600? How does it work?

Wild Bill Bucks · November 4, 2011, 12:55 PM

Drop compensation has to do with the velocity of the round you shoot, as well as the bullet weight. Once you know the approximate speed and weight of your bullet, you can apply the chart that came with the scope.
I bought a Nikon scope with the drop compensating circles in the lens, and with a few range visits figured out what my yardage for each circle was.
I was a little ahead of the game because I do my own loading, and knew what my ballistics were before I started. Factory ammo will not be as consistent as hand loaded rounds, but you should be able to get your stats from the box, or the factory web-site.
You will notice that the chart shows a particular caliber and a particular bullet weight and velocity for that caliber, so if you shoot a different bullet, you will have to play with them a little to figure it out.
Once you do, the Nikon I have works great, although I have only used it on targets out to 350 yards.
Lot more to it than stated but I think you get the jist.

November 4, 2011, 12:55 PM	#2
Wild Bill Bucks Senior Member Join Date: December 28, 2005 Location: Southeastern Oklahoma, Next door to Sasquatch Posts: 1,266	Drop compensation has to do with the velocity of the round you shoot, as well as the bullet weight. Once you know the approximate speed and weight of your bullet, you can apply the chart that came with the scope. I bought a Nikon scope with the drop compensating circles in the lens, and with a few range visits figured out what my yardage for each circle was. I was a little ahead of the game because I do my own loading, and knew what my ballistics were before I started. Factory ammo will not be as consistent as hand loaded rounds, but you should be able to get your stats from the box, or the factory web-site. You will notice that the chart shows a particular caliber and a particular bullet weight and velocity for that caliber, so if you shoot a different bullet, you will have to play with them a little to figure it out. Once you do, the Nikon I have works great, although I have only used it on targets out to 350 yards. Lot more to it than stated but I think you get the jist.