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Trouble with Bulletflight Iphone comeups

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Old 10-12-2010, 08:10 AM
Bronze Member
Join Date: Feb 2010
Location: Southeast Missouri
Posts: 64
Trouble with Bulletflight Iphone comeups

Yesterday I was working on my dope for my .338, and I wasn't able to get Bulletflight to give me the right numbers. @ 800. Could someone look over my info and tell me what I might be missing.

.338 LM 300 grain SMK @ 2830fps Zeroed @ 300 yards
85 deg
Baro 29.92
Elev 400ft
Wind 2mph from 11 oclock
Cosine 0

I was zeroed @ 300 yards and bullet flight called for 14 MOA up @ 792 yards and I was way over the plate I ended up with only needing 11.25 MOA . I had the same problem back in June in South Dakota shooting @ 947 I could not go from 600 yards up to 947 yards. If I used what Bulletflight called for I would be several minutes high. I have tried to fudge the numbers in every possible way but nothing adds up. I and 100 % positive that my muzzle velocity is right, I entered bullet bc with bullet database. I have played with the b.c. to try and get it right and nothing seems to get me close. I really need to get this figured out before I head back to South Dakota next month for muley season.
Work harder millions on welfare depend on you!!!!!!
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Old 10-12-2010, 12:41 PM
Platinum Member
Join Date: Aug 2005
Location: Murray, Ky.
Posts: 1,282
Re: Trouble with Bulletflight Iphone comeups

My g5 drag model called for 12 min at 790 and the g1 model called for 14.

I've had better luck with the g5 model.

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Old 10-12-2010, 08:05 PM
Junior Member
Join Date: Mar 2004
Location: parkland, SK
Posts: 22
Re: Trouble with Bulletflight Iphone comeups

the bc in the bullet flight data base isn't always right. I believe that they use published bc's. compare with others and check. I have had better luck using a g7 bc. I have had good results using the bc's in brian litz's book.
For what it is worth, Eh!
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Old 10-12-2010, 08:27 PM
mo mo is offline
Silver Member
Join Date: Mar 2006
Location: mississippi
Posts: 432
Re: Trouble with Bulletflight Iphone comeups

I had to adjust my velocity in my program. My rifle shoots around 2875 to 2900 I finally settled on 3150 fps in the ballistic program. I shot rifle at 500 600 700 800 yds and everything was dead on.
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Old 10-12-2010, 10:29 PM
Gold Member
Join Date: Jan 2003
Location: North Louisiana
Posts: 664
Re: Trouble with Bulletflight Iphone comeups

Totally amazing!!
"You don't have no idea how little I care!"

Monte Walsh
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