Re: ICAO or Army BCs data ??
First of all, thanks for the many answers!
Second, shooting and hunting in Argentina is simply fantastic!! We have many options to (for a price of course) but mostly we can go from the Pampas to Patagonia...very wild and somewhat unspoiled terrain. Also a perfect scenario for LRH
Take for example a BC of .400 (Army) if we convert it to ICAO the number goes down to .393 and now we can see that a long range the differences will show up very neatly so my original question.
Of course taking velocity readings will solve the issue to some extent, at least we can have a BC under actual firing conditions but it's not very practical...
In short, please correct me, only some companies acknowledge the atmosphere they used to compute BCs isn't it?