help and advice needed please

[triggersqueezer]

help me please i might be doing something stupid or expecting to much.i chronod a load and the fps was 2700 the ballistic cf was .435 weight 75 amax scope center 1.9 above bore line . i typed this into swarovski web sight ballistic program and a copy of exbal.the same info in both programs had a 1 click .38" inch at 300 yds difference =just over an inch (good enough),but when i shot at my target the bullets were easily 12"+ low.from this i can only take away i might as well scrap them and do it the old fashioned way,and how much faith can i have in windage.i'm learming so please go easy if i'm doing something stupid.

in short is it me ? can a more accurate ballistic program be purchased?

 

thanks in advance for any views on this.

mike

[1967spud]

mike have you tried the berger bullets one which can be found here http://www.bergerbul...gram/index.html i use it all the time and find it close enough to give good first shot indications then its a matter of allowing for atmospheric and relevent conditions to tweak the figures

 

 

is there any cock up in using a g7 co efficent on exbal as some versions only work off a g1 figure

 

 

ignore bullet load and example thay dony make any difference to drops for this exercise

 

[Deserttech Europe]

Hi I have I hope attached here the results from Cold Bore for you balistic curve.

 

Hope this helps you out

 

DTA

 

 

help me please i might be doing something stupid or expecting to much.i chronod a load and the fps was 2700 the ballistic cf was .435 weight 75 amax scope center 1.9 above bore line . i typed this into swarovski web sight ballistic program and a copy of exbal.the same info in both programs had a 1 click .38" inch at 300 yds difference =just over an inch (good enough),but when i shot at my target the bullets were easily 12"+ low.from this i can only take away i might as well scrap them and do it the old fashioned way,and how much faith can i have in windage.i'm learming so please go easy if i'm doing something stupid.

in short is it me ? can a more accurate ballistic program be purchased?

 

thanks in advance for any views on this.

mike

CB1_Ballistics_Results_1.pdf

[tackb]

no your not being stupid ! this is just the joys of ballistics, like turning your windage/elevation the wrong way or dialing 55 moa instead of 55clicks (i've done them both!)

 

that does seem quite a way off ? for the record it is always a good idea to validate any data you generate with actual target time for this very reason?

 

a couple of things

 

1 was the target at 300yds or metres? (military ranges are in metres)300m = roughly 330yds.

2 is your 100m zero smack on?

3 have you double checked your data input(it's very easy to get metric/imperial mixed up on one input)

4 did you get clicks/moa mixed up when you put your come ups in your scope? (did you dial the right way?!)

 

let us know when you sort it out?

[triggersqueezer]

great help there guys and thanks to all.your getting the same figures as me on exbal wich is showing a 14" drop but the reality is its dropping about 23". its great just to be able to check i'm not missing something stupid.if i'm honest i have taken these programs as a given and have allways missed more at longer range than i would like to admit.i think i have just found out why. .off to the feilds with a stack of targets i think.i was hoping there was a magic cure .thanks again all for taking the time to run the info through your programs.a big big help.

mike