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Need a long range ballistic program.......

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Unread 12-18-2006, 09:36 AM
Platinum Member
Join Date: Jan 2003
Location: The rifle range, or archery range or behind the computer in Alaska
Posts: 3,830
Re: Need a long range ballistic program.......

With a medium caliber such as the 308 with moderate velocity say 2550 you can have a BC error of about .040 and still hit the kill zone of a deer. You will need accurate pressure (altitude if you cant get pressure), temperature, velocity, scope height and angle of fire. If you enter correct air density, then 90% of the time using a rough estimate on your BC will get you fairly close at 600 and under. With a flatter shooting cartridge, it will be more forgiving.

Bear in mind I dont advocate trying to kill game with an unverified BC. The point in this thread is to show the limits of ballistic calculators without verifying data. Its that 10% that will cause a wounded loss. ALWAYS verify before attempting to harvest game.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.
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Unread 12-18-2006, 10:27 AM
Silver Member
Join Date: Feb 2006
Location: Nottingham, UK
Posts: 261
Re: Need a long range ballistic program.......

i was just wondering how far i would be out with a new round i will be developing in the next few weeks. just to get me on the paper with out putting up a large target.

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