Originally Posted by D.ID
Your comment about bc being accurate brings up another point of this discussion. I do not care what the numbers actually are, if it's 2837fps or 2976fps it makes no difference as long as it is 20moa at 870yrds 4000ft elv. in 75 degree weather (or whatever) as predicted.
Same could be said about bc weather it is .768 or .785 does not mean much to me as long as what ever numbers I am basing my calculations on give solid accuracy and predictable results.
As long as my calculations put me dead on my target the numbers are just numbers.
ES will show it's self plain as day at 800yrds, I do not even shoot at one or two hundred yards anymore except for initial zero. All my load development is done at 420yrds then zeroed at 100 and drop tested at 7-800 depending on what scope I'm using..
This approach can work well if you practice under the same environmental conditions you hunt in. Taken to the optimum, you set up your targets where you expect to ambush the game animal and then shoot enough to develop your drop data before the animal steps out where your target used to be.
With known and correct MV and BC (which can both be determined shooting over a chronograph during load development), a hunter whose limited to practicing at sea level can head out to hunt at 4000 or 10,000 feet. With accurate MV and BC, the hunter can use a quality ballistics software program and develop site and circumstance specific dope for any set of environmental conditions (variable station pressures and temperatures and winds) and shooting conditions (variable slopes, yardages, azimuths, latitudes). Again, the approach I'm identifying is helpful for guys who live in the lowlands and may have limited options to practice and develop measured drop charts at 4000 to 10,000 foot elevations in variable temperatures, yet hunt at elevations that vary from near sea level to 10,000 feet elevation. Employing a ballistics program to develop corrective dope for all environmental and shooting conditions encountered after the long range load has been developed does require accurate MV and BC