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 02-06-2012, 05:27 PM | #1 | Junior Member Join Date: Dec 2011 Posts: 6 |  7mm rem. Mag 1000 yards?
I have a winchester model 70 in a 7mm mag if im shooting 100 grain bullets what kind pf drop would i expect at 1000 yards | 
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| 02-06-2012, 06:11 PM | #2 | Moderator Join Date: Feb 2008 Location: Third bunker on the right, Central Virginia Posts: 8,367 Liked 3 Times on 3 Posts
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With that bullet, drop at 1000 would be measured in yards.
Different bullets have different ballistic coefficents. Part is driven by weight/diameter, part by shape. The higher the BC, the better at very long range. All of the 100 grainers have pretty low BCs.
With a 200 yard zero, at 300 it will be about 5.5 inches low. At 400, 17 inches, and at 500, 36 inches. From there it sinks like an rainbow. __________________
What we have heah is.... failure to communicate. | |
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| 02-06-2012, 06:22 PM | #3 | Senior Member Join Date: Sep 2011 Location: fordland, missouri Posts: 4,782 |
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Originally Posted by c3shooter
With that bullet, drop at 1000 would be measured in yards.
Different bullets have different ballistic coefficents. Part is driven by weight/diameter, part by shape. The higher the BC, the better at very long range. All of the 100 grainers have pretty low BCs.
With a 200 yard zero, at 300 it will be about 5.5 inches low. At 400, 17 inches, and at 500, 36 inches. From there it sinks like an rainbow.
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C3 told you the truth. If you want to shoot that far w a 7mm mag and its for target shootin then try something like the Black Hills premiere 185 gr BT Fmj. Or the barnes tsx in 175 grain BT ballistic tip.
God didnt make all men equal colonel Sam Colt did __________________
Aim small miss small-the patriot
one well placed headshot=not known what hit it-me | |
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| 02-06-2012, 07:04 PM | #4 | Junior Member Join Date: Dec 2011 Posts: 6 |
Ok but im kind of confused with a heavier bullet wouldnt it just drop faster??? | |
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| 02-06-2012, 07:11 PM | #5 | Senior Member Join Date: Sep 2011 Location: fordland, missouri Posts: 4,782 |
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Originally Posted by big440dart
Ok but im kind of confused with a heavier bullet wouldnt it just drop faster???
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No bc it has more power behind it in momentum. It also has a better bullet coefficient(BC).
God didnt make all men equal colonel Sam Colt did __________________
Aim small miss small-the patriot
one well placed headshot=not known what hit it-me | |
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| 02-06-2012, 07:23 PM | #6 | Dead Wolves = Good Wolves Join Date: Nov 2009 Location: Rochester WI, Rochester WI Posts: 8,304 Liked 3 Times on 3 Posts
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Quote:
Originally Posted by big440dart
Ok but im kind of confused with a heavier bullet wouldnt it just drop faster???
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How far can you throw a ping pong ball compaired to to throwing a golf ball?? same principal applies to bullets.
You make a bullet too heavy your then thowing a bowling ball. The bowling ball does more damage at close range but you cant get it out very far.
Bullet design is a balance between weight and aerodynamics and diameter. Just because its a screamer at short range doesnt always hold true once you get downrange a bit. __________________
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
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A Liberal lives life fearing the evil a man might do. A Conservative lives life celebrating the good a man does. -JonM | |
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| 02-06-2012, 07:34 PM | #7 | Supporting Member Join Date: Oct 2011 Location: , IL Posts: 1,072 Liked 2 Times on 1 Posts
Likes Given: 1
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at a 200 yard zero with a Hornady SST 162 gr your looking at 34.8" drop @ 500 beyond that it really really falls off quickly after that range . if you looking at 1000 yards I would be looking at a different rifle , Something more like a 50 BMG , 6.5 to be honest. there are plenty of rifles capable of 1000 yards but if your looking for something that wont drop 10 ft there are better choices
Last edited by purehavoc; 02-06-2012 at 07:40 PM. | |
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| 02-06-2012, 08:04 PM | #8 | Senior Member Join Date: Sep 2011 Location: fordland, missouri Posts: 4,782 |
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Originally Posted by purehavoc
at a 200 yard zero with a Hornady SST 162 gr your looking at 34.8" drop @ 500 beyond that it really really falls off quickly after that range . if you looking at 1000 yards I would be looking at a different rifle , Something more like a 50 BMG , 6.5 to be honest. there are plenty of rifles capable of 1000 yards but if your looking for something that wont drop 10 ft there are better choices
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6.5 creedmore, 7.82 warbird, 338 luapa, 7mm ultra mag comes to mind
God didnt make all men equal colonel Sam Colt did __________________
Aim small miss small-the patriot
one well placed headshot=not known what hit it-me | |
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| 02-06-2012, 08:19 PM | #9 | Senior Member Join Date: Sep 2011 Location: fordland, missouri Posts: 4,782 |
Quote:
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Originally Posted by JonM
How far can you throw a ping pong ball compaired to to throwing a golf ball?? same principal applies to bullets.
You make a bullet too heavy your then thowing a bowling ball. The bowling ball does more damage at close range but you cant get it out very far.
Bullet design is a balance between weight and aerodynamics and diameter. Just because its a screamer at short range doesnt always hold true once you get downrange a bit.
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Exactly
God didnt make all men equal colonel Sam Colt did __________________
Aim small miss small-the patriot
one well placed headshot=not known what hit it-me | |
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| 02-06-2012, 09:28 PM | #10 | Iron Man Join Date: Apr 2007 Location: South central, NH Posts: 3,261 Likes Given: 1
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I had to calculate the 100gr at 3500fps. 375" drop w/ 100 yard zero. About -10+ yards! __________________
Freedom is not free. The best of us always leave too soon. | |
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