bob4432 Wrote:After messing with Hornady's Ballistic Calculator and Google Earth (for altitude), turns out I am not going stay supersonic or even close to 1000yd, maybe 800. The ranges where I will be shooting are about 300-500' higher than where I live, and when you add realistic air variables (less barometric pressure, need to read how that plays in), I think I was ~800fps @ 1000yd. So my plan is to step build - build a 600-800yd Grendel, still wanting to stay with a 16" barrel (I really like the size) and then when I become proficient at which I am supersonic at, move up to a 6.5Creedmoor. Figure it is the most cost effective way to get to 1000-1200yd being I would buy the optic for 1200yd or so, and on the reloading size, I can cross-pollinate bullets and primers, using Lapua Small Rifle 6.5Creedmoor brass. Trying to do this as cost effective as possible. I also have to remember that in the summer in Phx, AZ, we will stay no lower than 90F+ 24/7, so some people have a 'No Shooting in the winter, here it is limited shooting in the summer, as soon as the range opens".
Now, that I am going down 2-400yds, would a Faxon, BA Hanson or Green Mountain Barrel be adequate? Thanks all for the input and giving real world realities.
After reading your numbers, I jumped on my sterlok pro app and ran my chron data for the eld-m factory ammo out of my 16 inch aa barrel and at 1000 yards at 351 asl where I live it shows just over 1100fps, in fact it shows it hit 1000 yards at 1191.1 fps.
That's to close for me so I will only use my 20 at 1000 yards but just wanted to show what sterlok gives me with my data from a 16 inch at just above 350 altitude.
I think you might have entered something wrong when you ran the numbers.
I'm going to grab my notes and double check my data but that's what sterlok is giving me.
Edit to add.
Double checked my data everything is correct.
AA 16 inch
Hornady eld-m average muzzle velocity is 2494
Altitude 351 asl
1000 yards -1190.1 fps
Still a bit to close to for my liking but it seems possible to hit 1000 yards with a good handload you might reach it 1000 yards with 1200 fps.