Range Report Bullet Flight program issue.

[Easy_E]

I did a search here and didn't see any posts to help with this . White shooting this weekend I was comparing data between Sierras ballistic calculator and Bullet flight. Both were within one click on drop measurement but the Bullet flight programs clicks were off ? I'm not sure if the click data I input is correct ? I have a couple screen shots to show what I have.

As you can see its calling for 62 clicks for 4.3 mils ? My scope is a Leupold M5 1/10 MIL Turrets so I went with the mils drop and dialed. It just bothers me that something isn't right ?

 

[Lowlight]

Ah, edit it and fix the numbers. That is why the boxes are white, you can change it.

 

[Easy_E]

Ah, edit it and fix the numbers. That is why the boxes are white, you can change it.

I'm new to Mil scopes so please bear with me. 4.3 mils should be 43 clicks so I must have the wrong value for the clicks ?

I was messing around with v-mil value when I took the screen shot.

 

[Lowlight]

Change them both to .1

 

[Easy_E]

Change them both to .1

Thank you sir !! I was thinking about the down range measurement not at the scope.

 

[DropinLead]

Related to this...

I select .1 for MIL as shown above
I select a bullet like Hoirnady 168 BTHP and set it up with correct coefficient .452 or what not
I select 600 100- 700 range card with no wind and 100 yd increments
The clicks shown are correct for 200 yards but as I march up to 700 yds a gap widens
A difference appears between the stated Bullet Drop in inches and the math of the number clicks multiplied by 1cm converted to inches Farther the range the more the disparity up to 5-8 inches difference at 600 yards.

Is this normal? I always assumed it was straight math.

 

[Lowlight]

[MENTION=78556]DropinLead[/MENTION]

I am not sure what you are describing here ?

Are you trying to same the number between 200 & 300 then 300 $ 400 etc should be the same every 100 yards up to whatever ?

You're description as to the problem is not clear. Sounds like operator error as you are mixing values or something ?

 

[DropinLead]

Sure, thanks for responding.

Basically the clicks that Bullet flight tells me to do does not equate to bullet drop in inches it is also telling me happens. It tells me the bullet drops 35 inches yet it tells me to do clicks equivalent to 22 inches. That is not a real example but there is a difference. It is not in front of me. The farther the yardage the bigger the deviation is.


Using .1 for click increments exactly as described here in Metric scope mode. In non metric mode I use .344" like it wants and I even tried .394" like it really is. Switched to metric mode and entered .1 as shows above.

Essentially at everything north of 200 yards what it tells me to dial in for clicks does NOT equate the the bullet drop it shows unless I fundamentally do not understand something on the screen or I suck at basic math. I always assumed if a bullet drops 35 inches I need clicks equivalent to 35 inches. no?

I can post screen shots tonight.

 

[Easy_E]

Dropin did you chrono your loads ? Thats what it sounds like screen shots will help.

 

[DropinLead]

Sorry, not being clear. Maybe these pics will help. What it tells you the bullet will drop is not what it tells you to dial in elevation. The do not jive. Try the math.

With Metric Scope setup:ON
200 yds = 4 clicks * 344 = 1.576" at 100 yds x 2 = 3.152" inch dope. Yep the clicks are right.
600 yds = 41 clicks * 344 = 16.154" at 100 yds x 6 = 96.924" inch dope. Not even close. What gives?

BTW it does this with MOA (With Metric Scope setup:OFF) as well using .344 as well. Same answer.

I assume I am missing some critical piece of info because on paper I would calculate 38 clicks for 600 yards not 41, that's about 10 inches of difference.

 

[Lowlight]

Really who cares what the drop in inches is, it's irrelevant when using mils.

Secondly 1mil at 100 yards is 3.6" so 4.1 x 3.6"= 14.76 then x6 = 88.5

its an inch off...

 

[DropinLead]

Your right about inches, but I care to the extent that the program tells me bullet drop in feet not that matters, but when I do the math it does not jive.


My S&B scope says 1 click = 1 cm. Nice clean conversions from metric to SAE. Problem was I was doing conversion to inches with cm not mils, bullet flight was assuming mils. Until I saw you write it it did not click cm <> mil. Milradian does NOT appear to be Metric or at least it does not appear to be 1mil = 1cm.

People say 1 mil = 1 cm so I used .1 in the tool which uses Milrad when you then turn on metric. Milrad does not appear to be "metric" and my scope being Legit METRIC, I assumed I needed to turn on metric in bullet flight. It says metric not Milrad in the options.

cm = 36 clicks/ Mils = 41 clicks or a 10 inch difference at 600 yards according to bullet flight. Do not mix and match CM and Mils they are not interchangeable.

Anyhow, I have to turn off METRIC RANGE = OFF, then if I use .394 for click value (1 cm) it comes up with 36 clicks which puts it just over an inch off just like it thinks with mils. I have to use the tool in "SAE mode" and shut off all references to metric and then use .394 and not either of .344 or .250.

Works fine, just a bit confusing referring to metric. There are actual metric scopes. Milrad is not one of them. Works fine, just a bit confusing. Thanks and regards!

 

[Ring]

"My S&B scope says 1 click "

holy balls.... if u have a scope that has turrets, the word "clicks" should never come out of your mouth....

if drop is 4.3mil, dile 4.3 on the turret... if 4.3 matches your real life "trued" data, then again.. DONT WORRY about any "math"

true your data at 300-600-700y, now, if BF matches your data book, STOP WORRYING!... just dial and shoot