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Sighting-in for optimum performance (PBR)

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BUTCHER45:
     These are excellent articles that will show you how to get optimum performance from your hunting rifle or handgun by sighting-in to your bullet's fullest potential according to it's PointBlankRange.


     For Rifles:  http://www.chuckhawks.com/sight-in_rifle.htm

     For Handguns:  http://www.chuckhawks.com/bench_rest_handgun.htm


     Rifle Trajectory Table:  http://www.chuckhawks.com/rifle_trajectory_table.htm
     
     Handgun Trajectory Table (condensed version):  http://www.chuckhawks.com/handgun_trajectory_table.htm


                                                                                                                     BUTCHER45
     

Glanceblamm:
Make sure to test your caliber at two or more increments past the inital sightin yardage (as said by the chuckhawks or other data ) because your published velocity may not be up to snuff and this testing is really the only way to tell if you do not own a chronograph.
It had been my experience that the published velocitys can be overly optomistic in some cases and the testing is really the only way to tell. This is harder work as you may have to use a measuring tape & pins but will  tell you like it is with the added benifit of not having to buy a chronograph at all.

manofthe45:
Anyone who hasn't practiced at a given range has no business shooting at that range.  Even if the bullet manufactures are dead on and you have the test barrel length to the tee.  Nobody should ever fire on a game animal past where they know themselves to be proficient.

ol mike:
The chuck hawk site has some good info. but there are a few free online ballistic software sites you can go to.
You don't have to download anything just use their site.

Go to www.biggameinfo.com  and click on external ballistic program ,then just plug in your info .

With a little research to find your bullets actual -bc-  -then plug in your elevation , velocity etc..

Although the bottom line is you still need to shoot ' your ' gun at these ranges.Don't shoot in extreme hot or cold temperatures b/c you'll get higher velocity in hot weather and lower in cold.

Since this info is on a big game site -i disagree w/ using it on predator/varmints b/c your target is MUCH smaller.Look at the mid-range trajectory -you'll see that you can easily overshoot and animal at 150yds..

Personnaly for a predator calling rifle i don't like the mid range rise to be more than 1.5" so a 22-250 hitting dead on at 200yds is perfect to me..

Get out and shoot out to 300-400yds --a lot of fun and easier than you think to make good hits...

Don Fischer:
Being a lousy predator caller but having a bit of understanding of ballistics, I'd say that the 1.5" MRT is probably a good idea. First off your calling. If your decent at it, your shot shouldn't be all that far should it? What do you have, about a 4" or so kill zone? Using a MPBR  with a 3" kill zone would make the MRT 1.5".

In my 243 with 75gr V-Max bullets my MPBR is 243yds (bullet 1.5" low). MPBZ is 215 yds (bullet +/- 0"). at 150 yds the bullet is +1.4".  Seems to me that for called predators that's plenty good. By the way, bullet impact at 200 yds is +.4". I've shot at these ranges but with a 5" target  and it works well. The bad thing about the 5" target is that if what you have is a head shot at about 150 yds and you hold on the center, you'll shoot over the top. A three inch target will get it done. Gonna go re-sight my 243!

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