How do I calculate my shot if 150gr bullet drops 30in at 500yds and I shoot..........
- Thread starter Jamie Young
- Start date
None that SETI will confirm, they haven't called me yet...
but so far my machine has processed 135 spikes, 6 pulses, and 11 triplets from Arecibo. Not exactly the stuff that would warrant a movie like "Contact", I'm afraid.
BobR is referring to the little radiotelescope icon in the taskbar. A BIG project, done on scores of individual computers, here's the URL:
http://setiathome.ssl.berkeley.edu/
but so far my machine has processed 135 spikes, 6 pulses, and 11 triplets from Arecibo. Not exactly the stuff that would warrant a movie like "Contact", I'm afraid.
BobR is referring to the little radiotelescope icon in the taskbar. A BIG project, done on scores of individual computers, here's the URL:
http://setiathome.ssl.berkeley.edu/
Gewehr98, I agree with KLN also. But all Soda pop was asking on his initial post was what the velocity was at certain distances. On page 211, volume 2 of Hornady's fifth edition manual it give the information I posted. It does however only show the muzzle velocity at 3500 fps. I never said that I would shoot a load with those velocites nor did I give him the data to do so.
But just for the sake of argument The 300 Remington Ultra mag and the 300 Weatherby Magnum will achieve those velocites with that bullet I listed. That's out of the Hornady manual also.
But just for the sake of argument The 300 Remington Ultra mag and the 300 Weatherby Magnum will achieve those velocites with that bullet I listed. That's out of the Hornady manual also.
Jeff Thomas
New member
Perhaps another helpful thread in General ...
I asked a related question in the last day - see http://www.thefiringline.com/forums/showthread.php?postid=432574#post432574 for some basic info on ballistics, expecially software.
Fisher, thanks for that comprehensive list of ballistics software.
Regards from AZ
I asked a related question in the last day - see http://www.thefiringline.com/forums/showthread.php?postid=432574#post432574 for some basic info on ballistics, expecially software.
Fisher, thanks for that comprehensive list of ballistics software.
Regards from AZ
Jamie Young
New member
52.5gr IMR 4064 out of a 24in barrel. I'm shooting 150grFMJ from IMI I got them from Wideners. I've also used Sierra 150gr HPBT and didn't notice any difference. I am shooting uphill but I don't really have a clue about angles. Its nothing extreme But I know it does have an impact. There are always crosswinds there but the bullets still hit the paper. I'm not shootng tight groups just happy hitting paper at 500yds. Maybe the crosswinds there are holding the bullet up a little longer? Some of the Ballistics tables seem to be pretty different. FYI folks I have the gun sighted in at 100yds for hunting and I shoot further just for fun. I recently figured out how to get my MOA at 500yds but haven't gone to the range to prove it yet. I may be wrong but I've fired about 50rds at 500yds and rarely miss and I'm only aiming approx 3ft about the target. Anyone live in PA want to let me shoot threw there Chrono? I greatly appreciate all your responses Thanks!
Merry Christmas Folks
I hope you all get something under your tree that goes BANG!
[Edited by SodaPop on 12-24-2000 at 04:03 PM]
Merry Christmas Folks
I hope you all get something under your tree that goes BANG!
[Edited by SodaPop on 12-24-2000 at 04:03 PM]
Ruben Nasser
New member
According to my Lyman 47th manual your velocity should be right about 3000 fps, so the table Gewehr98 kindly provided should fit exactly (I use the same program). I would guess your range is off by a few yards.
Jamie Young
New member
Thats another possibility! I have the same reloading book.
Off-the-shelf from Sierra Bullets. It's their Infinity Ballistics software, either available by itself, or bundled with their reloading data on CD-ROM. Check it out, either at http://www.sierrabullets.com, or find it at http://www.midwayusa.com
Edmund Rowe
New member
Best way to find out is go shoot
My experience with ballistics tables is that they get you in the ball park, but differences like barrel length, air temp, height of scope above bore, and numerous other gremlins all add up to throw a monkey wrench in the best laid plans.
The best way I've found out where I shoot at x range is go out and shoot at x range. Now, for SodaPop, if you want to find out what will get the bullet on target at 1000 yards, I'd do the following (if I had a suitable range):
-Find a range where you are confident of the true ranges, or buy a laser rangefinder to make sure. My local range's "200 yard berm" is actually like 225 yards away.
-Buy a bunch of the same lot # of ammo. Use ONLY this ammo for the workup below:
-Shoot for zero at 100 yards.
-Repeat at least twice to know where your zero is at 100 on different days. Note that zero tends to "float" from session to session so don't go changing zero until you've seen several groups over different sessions.
-Record and/or mark the zero settings on the scope (you ARE using a scope to shoot out to 1000, right??)
-Repeat above for 200 yards. Record scope settings for 200. One way is record your "come-up", or how many clicks to change from your 100 yard zero.
-Repeat in 100 yard increments out to 1000 yards. In other words, shoot 300 yards the next 3-5 sessions, record results, then shoot 400 yards the next 3-5 sessions, then 500 yards, etc. Drop in bullet impact (and change in come-ups) should increase dramatically around 300-400 yards.
It's a slow, painful process, but unless you have 30' x 30' targets, if you try for 1000 straightaway, you may be missing by a mile and have no idea where your shots are going.
Also, your scope should have a LOT of adjustment to shoot for 1000 unless you are real good at overhold.
Edmund
My experience with ballistics tables is that they get you in the ball park, but differences like barrel length, air temp, height of scope above bore, and numerous other gremlins all add up to throw a monkey wrench in the best laid plans.
The best way I've found out where I shoot at x range is go out and shoot at x range. Now, for SodaPop, if you want to find out what will get the bullet on target at 1000 yards, I'd do the following (if I had a suitable range):
-Find a range where you are confident of the true ranges, or buy a laser rangefinder to make sure. My local range's "200 yard berm" is actually like 225 yards away.
-Buy a bunch of the same lot # of ammo. Use ONLY this ammo for the workup below:
-Shoot for zero at 100 yards.
-Repeat at least twice to know where your zero is at 100 on different days. Note that zero tends to "float" from session to session so don't go changing zero until you've seen several groups over different sessions.
-Record and/or mark the zero settings on the scope (you ARE using a scope to shoot out to 1000, right??)
-Repeat above for 200 yards. Record scope settings for 200. One way is record your "come-up", or how many clicks to change from your 100 yard zero.
-Repeat in 100 yard increments out to 1000 yards. In other words, shoot 300 yards the next 3-5 sessions, record results, then shoot 400 yards the next 3-5 sessions, then 500 yards, etc. Drop in bullet impact (and change in come-ups) should increase dramatically around 300-400 yards.
It's a slow, painful process, but unless you have 30' x 30' targets, if you try for 1000 straightaway, you may be missing by a mile and have no idea where your shots are going.
Also, your scope should have a LOT of adjustment to shoot for 1000 unless you are real good at overhold.
Edmund
Jamie Young
New member
I think thats probable the best Advice so far. I am in the process of figuring out how to use a Scope the right way. I will have to plan a few trips to the range and borrow a range finder from someone. Thanks