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j4lsu
LSU Fan
Pineville
Member since Aug 2006
2795 posts

question about a 30.06/sighting in related...
I have a 30.06 sighted in 1/2 inch high at 100 yards with 165 grain bullet... ran out of the 165 grain, and all I can find right now is a box of 180 grain...

any ideas on how the 180 grain will effect/change the shooting, versus the 165 grain, if at all? I would assume I would need to re-sight it in?



Huntinguy
Member since Mar 2011
1414 posts

re: question about a 30.06/sighting in related...
You need to re-sight if you are shooting any distance past 100 yards.

It likely shoots lower, but could very well group left or right of the original loading, and may not group at all.

Would I feel ok hunting with it from a hundred yards and in? Sure.


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56
civiltiger07
LSU Fan
Baton Rouge
Member since Dec 2011
11607 posts

re: question about a 30.06/sighting in related...
You need a lot more info. Velocity of both rounds, scope off set, and bullet data

Best thing is go shoot it and find out exactly where the new round is at.


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50
TheDrunkenTigah
Syracuse Fan
Baton Rouge
Member since Aug 2011
16292 posts

re: question about a 30.06/sighting in related...
You will definitely need to re-site. It will likely be hitting lower but how much is gonna depend a lot on the powder charge. Could be an inch or two, could be a foot.


Ol boy
LSU Fan
Member since Oct 2018
1055 posts

re: question about a 30.06/sighting in related...
Yes you must confirm and potentially rezero.
97% chance it will be at a minimum of 2-6in off and not just low like tin would assume.


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72
DownshiftAndFloorIt
US Space Force Fan
Here
Member since Jan 2011
57341 posts

re: question about a 30.06/sighting in related...
Check it. Sometimes the difference between loads isn't just vertical.


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70
fillmoregandt
Ole Miss Fan
OTM
Member since Nov 2009
14368 posts

re: question about a 30.06/sighting in related...
There are ballistic apps (I have the Winchester one) that let you enter in various bullets/weights/calibers/etc and compare. Not the same as actual range time, but can give you an idea

In your situation, there probably won’t be a ton of change until you get out to 200,300 yards. But I’d reshoot it just to be safe


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j4lsu
LSU Fan
Pineville
Member since Aug 2006
2795 posts

re: question about a 30.06/sighting in related...
thanks everyone for the ideas and info... I will definitely re-sight it; I was just looking for some info and I appreciate it....


257WBY
Baylor Fan
Member since Feb 2014
3028 posts
 Online 

re: question about a 30.06/sighting in related...
Shoot once for peace of mind. Adjust as needed.


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10
geauxtigs99
LSU Fan
NY
Member since Dec 2005
1036 posts

re: question about a 30.06/sighting in related...
I shoot a .306 168 ballistic silver tip my brother shoots a .306 180 grain silver tip. We were done at the range this past august and decided to run each other’s thru just in case we couldn’t get ammo. No difference at 100 or 150 yards the 180 grain dropped 1/4 inch at 200 yards. I would still sight it in just passing some info along, also two different guns.


baldona
Auburn Fan
Florida
Member since Feb 2016
14070 posts

re: question about a 30.06/sighting in related...
Yeah I would definitely shoot a couple, but chances are for hunting at under 250 yards you are likely more then fine and it will only be an inch or so off at most.


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20
rlp
LSU Fan
Shreveport
Member since Sep 2005
559 posts

re: question about a 30.06/sighting in related...
quote:

could be a foot.


C'mon man...


NoMoreKnees
Southern Miss Fan
Hartselle, AL
Member since Jan 2017
191 posts

re: question about a 30.06/sighting in related...
I shoot 150 gr 30.06 and sight in dead on at 25 yards. That will be 1.8” high @ 100 yards, dead on @ 200 yards and 8.2 low @ 300.
That will kill anything in the SE!


TheDrunkenTigah
Syracuse Fan
Baton Rouge
Member since Aug 2011
16292 posts

re: question about a 30.06/sighting in related...
quote:

C'mon man...


My 35 whelen sees almost a 10” range in POI from various ammo. It actually shoots a lighter Barnes low, because I suspect it can’t stabilize them. In all likelihood the change will be minimal in a 30-06 since he’s in the wheelhouse of normal bullet weight, but there is just no way to know how that load is going to perform in his barrel, or how this new one is loaded.


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10
Cossatotjoe
Arkansas Fan
Member since Oct 2020
635 posts

re: question about a 30.06/sighting in related...
Yes, you should probably re-sight it. But if you don’t have time before a hunt, I wouldn’t sweat it much. Probably still will be fine out to three hundred yards or so.
This post was edited on 12/22 at 3:34 pm


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257WBY
Baylor Fan
Member since Feb 2014
3028 posts
 Online 

re: question about a 30.06/sighting in related...
25 yard sight in is not a good idea.


DownshiftAndFloorIt
US Space Force Fan
Here
Member since Jan 2011
57341 posts

re: question about a 30.06/sighting in related...
Its what the national guard does baw


Megasaurus
Member since Dec 2017
783 posts

re: question about a 30.06/sighting in related...
quote:

I have a 30.06 sighted in 1/2 inch high at 100 yards with 165 grain bullet... ran out of the 165 grain, and all I can find right now is a box of 180 grain... any ideas on how the 180 grain will effect/change the shooting, versus the 165 grain, if at all? I would assume I would need to re-sight it in?



deer/big game hunting, say inside of 200 yards, and the same or similar bullet, no worries- fire away.
This post was edited on 12/22 at 6:35 pm


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12
257WBY
Baylor Fan
Member since Feb 2014
3028 posts
 Online 

re: question about a 30.06/sighting in related...
Do the national Guard snipers sight in at 25 yards?


subMOA
LSU Fan
Komatipoort
Member since Jan 2010
1321 posts

re: question about a 30.06/sighting in related...
Probably not- but the regular infantry men are shooting 300 meters open sight like that.

So, what’s your worry?


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