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gleason.chapman 10-25-2008 10:32 AM

RE: another bullistics question
 

ORIGINAL: Campbery

Hi guys, I was out shooting my triumph this week and our range doesn't go further than 100yds. Got 1" groups with 100gr 777 and .45 Hornady sabots (SST). I was wondering what my ft.pounds andtrajectory would be at 150 and 200yds? Thanks very much.
Go to this link:

http://www.sav10ml.com/pages/load_data/traj_basic_dat.html

drop in your bullet weight, BC, Zero and MV, which is
250g
BC=.21
zer0=100 yards
MV=1835

and you get:






So if you sight in at 25 for windage and zero, at 100 your dead on at 200 your 14 low, 300 your 50 inches low. Chap


gleason.chapman 10-25-2008 10:39 AM

RE: another bullistics question
 
According to my records I have the 250g SW with a BC of .184 not .21, if you go with a 150 yard zero you get this:







So your about 3.5" high at 100 yards and your shooting thru a 6" pipe from 0 to 175. Most MLer bullets drop off the wall at 200, you can get a Barnes 300g Spire Point 45/70 to 200 with a 3.5" high zero at 100 yards. Chap

Underclocked 10-25-2008 12:11 PM

RE: another bullistics question
 
And now go shoot it at 150 and 200 yards to see how close the math is to reality. :)

hossdaniels 10-25-2008 12:28 PM

RE: another bullistics question
 
300g bullets are much better than 250g for long range shooting, better bc, less wind drift near the same drop. More energy downrange too.

Also hornadys bc's are inflated a little, if you are a couple inches high at 100, prolly bout 10" low at 200. PRACTICE, PRACTICE, PRACTICE. And dont underestimate the wind.


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