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re: Calling OB Ballistics Experts

Posted on 1/5/17 at 8:37 pm to
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
66763 posts
Posted on 1/5/17 at 8:37 pm to
You definitely need to get dead on at 25 before even trying to shoot 100. You'll probably be barely on the paper.
Posted by texag7
College Station
Member since Apr 2014
37514 posts
Posted on 1/5/17 at 8:55 pm to
You just need to shoot your gun more. Go put a target at 100 and 200 yards and go thru a few boxes of ammo.
Posted by TigerOnThe Hill
Springhill, LA
Member since Sep 2008
6811 posts
Posted on 1/5/17 at 11:04 pm to
quote:

No way I am taking that gun hunting before adjusting it left and shooting it again

1+

You SHOULD be 3-4" to the right at 100 yds and 6-8" to right at 200 yds.
Using the JBM Ballistics Calculator, at 1/2" low at 25 yds, you SHOULD be 4.9" hight at 100 yds, 6.1" high at 200 yds and 4.5" high at 250 yds. OTOH, a very small wiggle of the gun at 25 yds can make a BIG difference in point of impact at 100 yds and further

Do yourself a favor and shoot it some more.
Posted by PT24-7
Member since Jul 2013
4368 posts
Posted on 1/5/17 at 11:06 pm to
Go 16 clicks left and don't think about it again. If your hunting tomorrow no matter what worrying about it won't do any good
Posted by SportTiger1
Stonewall, LA
Member since Feb 2007
28502 posts
Posted on 1/6/17 at 12:54 am to
I know you know your stuff, but this doesn't sound right at all...


quote:

at 1/2" low at 25 yds, you SHOULD be 4.9" hight at 100 yds,
Posted by Carson123987
Middle Court at the Rec
Member since Jul 2011
66405 posts
Posted on 1/6/17 at 1:21 am to
quote:

at 1/2" low at 25 yds, you SHOULD be 4.9" hight at 100 yds


wtf
Posted by halleburton
Member since Dec 2009
1519 posts
Posted on 1/6/17 at 6:18 am to
.75" low at 25 yards is definitely fine and pretty close to a 100 yard zero. As others have said, the L-R needs fixing asap, that only gets worse with distance. Federal has an easy ballistics calculator, just pick a bullet with a similar BC and you can modify zero and yards.
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
66763 posts
Posted on 1/6/17 at 6:28 am to
Right, but shootjng a gun no farther than 25 yards and just assuming that translates into 100 yard zero is irresponsible.

Shoot the gun at paper as far as you plan to shoot at deer.
Posted by halleburton
Member since Dec 2009
1519 posts
Posted on 1/6/17 at 7:14 am to
Obviously it's not perfect, just pointing out that .75" low translates to a zero right at 100 yards. I've never shot a target past 100 yards but have killed several deer at 200 or a little longer.
Posted by ducksnbass
Member since Apr 2014
754 posts
Posted on 1/6/17 at 7:42 am to
If that's where it's hitting at 25 yards and you don't have a chance to shoot again before hunting, adjust your scope 16 clicks left and you should be on at 100. Definitely minute of deer.
Posted by biohzrd
Central City
Member since Jan 2010
5602 posts
Posted on 1/6/17 at 7:52 am to
I'm no expert, but I had about the same pattern and it is still a killer at 100yds. Take some test shots to make sure though.
Posted by TigerOnThe Hill
Springhill, LA
Member since Sep 2008
6811 posts
Posted on 1/7/17 at 9:45 pm to
Ok guys, apparently, some of y'all were paying more attention than I was. I reran the #'s and I was wrong. The #'s I posted were w/ the gun hitting 1/2" HIGH at 25 yds. My mistake. Sighted 1/2" low at 25 yds as the OP stated, it should be 0.9" high at 100 yds, 1.7" LOW at 200 yds and 5.3" LOW at 250 yds. OTOH, my error does point out that when sighting in a gun at 25 yds, a small wobble can make a big difference at distant ranges. My bad.
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