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Joined: Oct 2002
Posts: 289
Campfire Member
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OP
Campfire Member
Joined: Oct 2002
Posts: 289 |
Just got one of these in FS CZ. How many inches high at 100 yds to be on at 200 using 286 S&B cartridges with scope. Can not find table on 9.3. Tried doing calculations and come up with 5 inches. Must be using wrong BC. Thanks.
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Joined: Apr 2004
Posts: 61,130
Campfire Kahuna
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Campfire Kahuna
Joined: Apr 2004
Posts: 61,130 |
Assuming that the factory listed fo 2280 fps is close, and I'll use 2250 for the calculations, a 200 yard zero ought to put the S&B SPRN 3.71" high at 100 yards, and 6" low at 250. Here's the ballistics calculator: http://www.handloads.com/calc/index.html
Last edited by VAnimrod; 01/19/06.
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Joined: Jun 2004
Posts: 44,860 Likes: 4
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 44,860 Likes: 4 |
What BC and muzzle velocity are you using?
Looking at my tables, a Nosler 286 grain Partition starting out at 2350-2400 fps will need to be around 3" high at 100 yards to be on at 200. Nosler lists a BC of .482 for this bullet, which is pretty good and may not represent the S&B offering very well.
If the BC is more like a 300 grain round nose from a 375, on the order of .275, then you'll need to be closer to 3.5-3.6" high at 100 to be on at 200.
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Joined: Apr 2004
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Campfire Kahuna
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Campfire Kahuna
Joined: Apr 2004
Posts: 61,130 |
FWIW, the BC, IIRC, on the S&B round is about .300-.305
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Joined: Apr 2005
Posts: 7,259
Campfire Tracker
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Campfire Tracker
Joined: Apr 2005
Posts: 7,259 |
2 inches high at 100 yards and hold dead on at everything from 25 to 200. You are unlikely to be shooting beyond 200 yards.
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Joined: Jun 2004
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 44,860 Likes: 4 |
VAnimrod,
You're quicker on the draw than me. I just looked at the S&B website, and they claim 7" drop at 200 yards from a 100 yard zero, with a muzzle velocity right at 2300 fps. Reverse engineering my drop table tells me the BC should be .300.
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