Question about zeroing in at 200 yards?
11-01-2008, 11:09 AM
#11
Typical Buck
Join Date: May 2003
Location:
Posts: 920
RE: Question about zeroing in at 200 yards?
ORIGINAL: DM
There's the RIGHT answer...
DM
ORIGINAL: skb2706
If you don't know you certainly don't have any business shooting 300 yds. Why don't you take it out and shoot it, just like magic you will know. All the charts in the world won't help without more information.
If you don't know you certainly don't have any business shooting 300 yds. Why don't you take it out and shoot it, just like magic you will know. All the charts in the world won't help without more information.
DM
I am going on a northern hunt soon and was told the longest shots would be 300yds. I decided on taking a Sako 270WSM for this trip and yesterday I did some shooting. I dont take any ballistic tables as absolute fact, as described above there are just to many variables in the equation. I dont know how a resonsible hunter can only rely on charts without actually shooting at ranges they intend or possibly have. I will run someballistics on my laptop while shooting to get me in the ball park, other than that I shoot at different ranges andtake notes for future CU charts and reference.
Used +2.25 moa from my 100 yard zero for this 300 yard target, dead deer x3
11-01-2008, 02:37 PM
#12
Nontypical Buck
Join Date: Feb 2003
Location: Body in SE WI, mind in U.P.
Posts: 4,781
RE: Question about zeroing in at 200 yards?
I don't know about the magnum, but I've shot enough 30-06 and .223 in across the course competition to know the bullet drop like the back of my hand. Standard velocity cartridges like 30-06, .308, and .223 (yes its faster but gives up a lot in BC, or is about the same velocity with high BC bullets) usually follow the same trajectory, or close enough...
100-200 yards 2minutes drop
200-300 yards 3 minutes drop
300-400 yards 3 minutes drop
400-500 yards 4 minutes drop
500-600 yards 4 minutes drop
Wind is a completely different matter altogether. Its not going to cause that many problems out to 300 yards so long as its below 10mph, but beyond that, you'd better have a wind chart.
100-200 yards 2minutes drop
200-300 yards 3 minutes drop
300-400 yards 3 minutes drop
400-500 yards 4 minutes drop
500-600 yards 4 minutes drop
Wind is a completely different matter altogether. Its not going to cause that many problems out to 300 yards so long as its below 10mph, but beyond that, you'd better have a wind chart.
11-02-2008, 06:30 PM
#13
Typical Buck
Join Date: Jun 2005
Posts: 604
RE: Question about zeroing in at 200 yards?
The BC on the 7mm is .354. The factory loads usually run about 50 FPS below the claimed numbers. The 7mm is approx 5.3 low at 300.
The BC on the 06 .310. Assuming 50 FPS off the claimed numbers.
The 06 is approx 6.7 low at 300.
If you are grouping well at 200 yards 300really should not be a problem since the drop is not really that much. You are more likely to have a problem with winddriftthan bullet drop due to the low BC of those bullets.
The BC on the 06 .310. Assuming 50 FPS off the claimed numbers.
The 06 is approx 6.7 low at 300.
If you are grouping well at 200 yards 300really should not be a problem since the drop is not really that much. You are more likely to have a problem with winddriftthan bullet drop due to the low BC of those bullets.
11-03-2008, 09:58 PM
#14
Join Date: Sep 2003
Location:
Posts: 84
RE: Question about zeroing in at 200 yards?
http://www.biggameinfo.com/BalCalc.aspx
I use this calculator. It's usually pretty close when I check mine against it. You need to know the velocity of your ammo, BC, and height above the bore.
Craig
I use this calculator. It's usually pretty close when I check mine against it. You need to know the velocity of your ammo, BC, and height above the bore.
Craig
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