Gentlemen,
Because I've got a few free minute over lunch today I wanted to get some discussion going on sighting in the 450. Specifically related to what I've read from Chuck Hawks on MPBR (Maximum Point Blank Range). Take a look:
http://www.chuckhawks.com/ultra-long-range.htm
http://www.chuckhawks.com/rifle_trajectory_table.htm
Here's the quick reference: "The Maximum Point Blank Range (MPBR)... ...[is] the distance at which the bullet falls 3 inches below the line of sight. Thus between the muzzle and the distance given as the MPBR, the bullet never strays more than 3 inches above or below the line of sight."
So just looking at the factory information for the 250 grain hornady ammo (2200 ft/sec, BC=.210):
http://www.hornady.com/store/450-Bushma ... evolution/
And then going:
http://www.hornady.com/ballistics-resou ... calculator
And playing with the zero in range, if you sight in at 172 yards you'll be 2.9 inches high at 100, and 2.9 inches low at 200.
This would obviously change for handloads, and maybe someone who has done some handloads and has some good stats on velocity and trajectory for them could add what their MPBR is.
To me MPBR is a pretty interesting concept. Thoughts?!
Bill