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Posted: 8/29/2001 9:07:17 AM EDT
What is the drop of a 55 grain bullet at 600 yards?
Link Posted: 8/29/2001 9:10:57 AM EDT
What is the velocity? What bullet type, FB or BT? What is the B.C.? There some difference, even with different projectiles of the same weight. So many variables, so little info.
Link Posted: 8/29/2001 9:13:42 AM EDT
It is BT and the velocity is 3240 at the muzzle.
Link Posted: 8/29/2001 9:19:24 AM EDT
[Last Edit: 8/29/2001 9:23:10 AM EDT by Jack-B-Nymble]
A quick answer is about 88" with a 100 yard 0. To 0 for 600 you should set POA/POI at about 15" high at 100 yards. I could cut in finer, but that should get you in the ballpark. But, running a different brand bullet, same weight, lower B.C., you may have to go 20" over at 100.
Link Posted: 8/29/2001 10:04:15 AM EDT
http://www.ipgeneral.com/~renegade/rifle/rifle1.shtml M15A2: Check this link out, I believe your drop will be around 34" @ 600. Plug in your own numbers and check it for free.
Link Posted: 8/29/2001 11:32:49 AM EDT
Wilson, Go back to that site and plug it in yourself. Use a B.C. between .207 and .275. Now, go for 600 yards as your 0. When the graph comes up, look at the trajectory (bullet height) at 100 yards. LR trajectory for a 55 grain .224 projectile sucks. That's why for LR competition they use 69 grain and heavier projectiles. Even though the velocities are much lower, the high B.C.s more than make up for it. 34" drop at 600 yards from line of sight could not be had if that 55 grainer was going 4000fps.
Link Posted: 8/29/2001 11:39:08 AM EDT
Originally Posted By mr_wilson: [url]www.ipgeneral.com/~renegade/rifle/rifle1.shtml[/url] M15A2: Check this link out, I believe your drop will be around 34" @ 600. Plug in your own numbers and check it for free.
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Link Posted: 8/29/2001 12:12:17 PM EDT
With bc=.269, v=3,240 and zero=50 yards, I caluclate drop of 77.1" at 600 yards. If you went with a 30 yard zero, the bullet would drop 59.2" at 600 yards.
Link Posted: 8/29/2001 12:57:50 PM EDT
I got -86.29" and -76.41" with those 0s and that data, respectively.
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