ballistic charts way off from bench shots

[rammac]

rammac, that looks alot better than what mine shows...I'm using the Berger online (berger 140 hybrids) and the G7 (Gunwerks) online......I've looked for a good windows 10 ballistic program, but I don't know that the good ones are win10 compatible....I believed that the ones I was using would work, and have for other rifles, but yours works for this one....even at 600 yds, yours shows 9.3, and my bull was 9.2, which is great.Which program is yours? Rsbhunter

QuickTarget, it's the external ballistics software that works with QuickLoad.

 

[#40Fan]

Try this one.

http://www.shooterscalculator.com/ballistic-trajectory-chart.php

Free.

 

[mike a]

Do a tall target test at 500 yards. Make a target frame like this. This will give you your real live drop. Who needs a chrono! Mike

 

[338 dude]

Admittedly, not a bench rest shooter (at least a good one) but i chron'ed my 26" 6.5 creed and come up with 2762 fps ...140 Berger hybrid, 41.6 gr H4350, Fed gm205m....005 off. Lapua brass. On two different ballistic programs zeroed @200, for 500 yds, i get moa come up at 7.60 ( @75 degrees)...but to be on bull at this range, i only dial up 6.75,,,,right at 1 moa difference. Temp is right, scope height is right, all info on ball program is correct....so why the difference? one of the ballistic programs has a fps correction at corrected moa adjustement at given yardage,,,,it shows 3039 fps.....i believe the 2762 is a true fps.....so what am i doing wrong, or is that not a big moa difference? Thanks for any insight to this

You know your velocity if your environmental’s and rifle set up is correct the one thing that we are all guessing on his BC manufacturers stretch the truth some ballistic programs will let you run multiple B C’s or a custom curve where if you run only one BC it is an average of different velocities over the range therefore it can be off this is a picture of Bryan Litz’s book ballistic performance of rifle bullets third edition check information on the bullet

 

[moondog]

JBM ballistics online.