Question about zeroing in at 200 yards?
 

I have just zeroed in two of my hunting rifles at an inch high at 200 yards and would like to know how much of a drop there will be at 300 yards ....one is a Colt Sauer7mm mag shooting Federal Power Shok 150 grain ...the other is a FN Mauser in a 30/06 shooting the same bullet and weight ...any one know for sure what kind of drop with this set up at 300 yards?

dd

RE: Question about zeroing in at 200 yards?
 

200 yard zero, 300 yard target 150gr. 30-06 -8.2" 7Mag -6.6" I don't know for SURE, but that's whats on the chart.....

RE: Question about zeroing in at 200 yards?
 

Doc just go to Federals ammo web site and check out their ballistic charts. It will give you almost precise bullet drops. Remington has a very good ballistic chart on theirs also.

RE: Question about zeroing in at 200 yards?
 

Doc, Im sure this isnt the answer you want to hear, but the only sure fired way to know, is to shoot it. Having (2) 7mm myself I can guess and say you are probably ABOUT -5" at 300. Barrell length, FPS, wind, all come into play when shooting, and for someone to give an exact answer isnt going to be exactly right.

*My 7mm mag Ruger M77 Stainless 24" bar. zeroed at +1.5 @100 shooting handloads at 3080fps give me -8@ 300yrds tested

RE: Question about zeroing in at 200 yards?
 

It will also change with altitude,temp. and barametric pressure.

RE: Question about zeroing in at 200 yards?
 

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.

RE: Question about zeroing in at 200 yards?
 

DUHHHHHHHHHHHHHHHHHHHH

dd

RE: Question about zeroing in at 200 yards?
 

I have been tooling around with the ballistic calculator on the Hornady website. Populate the pertinent data fields and it will address your question about where the bullet may hit at various ranges. The default for zero is 200 yards because your 1" high at that range you will need to adjust the zero number. Plug in 240 yards for a zero and see if ityields data 1" high at 200 yards. I would imagine you are 3-4" low at 300 yards.
http://www.hornady.com/ballistics/

RE: Question about zeroing in at 200 yards?
 

Thank you Roz for the info and the work you did ...

dd

RE: Question about zeroing in at 200 yards?
 

There's the RIGHT answer...

DM

RE: Question about zeroing in at 200 yards?
 

+1 to the above



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

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.

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.

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