Question on ballistic app data inputs

[jackwagon]

There's your answer. An 8" target at 500yards is way too small for load development. Great for target practise when you square away your sights and ammo but right now you need a target that is as big as possible to see what's going on.

Especially when starting out with new loads and gun. The gun may only be capable of 2MOA which means the average group size at 500yards will be 10". Some bullets will always miss the target and there's not a damn thing you can do about it. Plus you don't yet know the velocity of your bullets.

I would suggest a minimum of 3ft square at that range. You can always 'borrow' a Corflute plastic sign on the side of a road if looking for something that big. Retailers sometimes leave them out at night...

Klem, You have disproved all my theories on what I did wrong with math, that was very cool, thank you. This is a work in progress and as long as i am on the right track I can work on the rest.
I have already purchased new scope VViper HST 6x24x50 mil/mil . Santa has my order for a chrono.
I am going to do a tall target test to get scope as correct as possible, might be good for drop data also?
I am going to stop second guessing myself and buy LARGER TARGETS.......OH, and work on the mil math.