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Moving Scope Forward - POI Difference? #2672640
12/14/18 11:40 AM
12/14/18 11:40 AM
Joined: Apr 2015
Posts: 3,287
Hartselle, AL
N
NWALJM Offline OP
10 point
NWALJM  Offline OP
10 point
N
Joined: Apr 2015
Posts: 3,287
Hartselle, AL
I am needing to move my scope forward just a bit (on the rail) 1/2"-1". What changes should I expect with POI, if any, and how considerable would it be at say 100 yards?

Re: Moving Scope Forward - POI Difference? [Re: NWALJM] #2672650
12/14/18 11:46 AM
12/14/18 11:46 AM
Joined: Dec 2014
Posts: 1,609
SE Alabama
ChrisAU Offline
8 point
ChrisAU  Offline
8 point
Joined: Dec 2014
Posts: 1,609
SE Alabama
No way to know, the difference in POI will come from minuscule differences in how it seats back on the rail, not necessarily from the geometry change in moving the scope forward. Shoot it to be sure.

Re: Moving Scope Forward - POI Difference? [Re: NWALJM] #2672657
12/14/18 11:52 AM
12/14/18 11:52 AM
Joined: Jun 2015
Posts: 14,012
Some Marriott/Auburn
A
AU7MM08 Offline
Booner
AU7MM08  Offline
Booner
A
Joined: Jun 2015
Posts: 14,012
Some Marriott/Auburn
You'll need to visit the range.

Re: Moving Scope Forward - POI Difference? [Re: NWALJM] #2672661
12/14/18 11:53 AM
12/14/18 11:53 AM
Joined: Apr 2015
Posts: 3,287
Hartselle, AL
N
NWALJM Offline OP
10 point
NWALJM  Offline OP
10 point
N
Joined: Apr 2015
Posts: 3,287
Hartselle, AL
Rats...lol.

Re: Moving Scope Forward - POI Difference? [Re: NWALJM] #2672665
12/14/18 11:56 AM
12/14/18 11:56 AM
Joined: Apr 2015
Posts: 3,287
Hartselle, AL
N
NWALJM Offline OP
10 point
NWALJM  Offline OP
10 point
N
Joined: Apr 2015
Posts: 3,287
Hartselle, AL
I'm needing to adjust for eye relief so I don't get scoped. I bought the rifle and had the scope mounted/bore sighted at the store. They did a great job bore sighting it, was dead on at 25 yards first shot. But in doing so, they moved the scope a little far back (I guess in order to get the objective end as close to the barrel as possible. I've gotten slightly bumped a couple times while shooting, and am not a fan of the current relief.

Re: Moving Scope Forward - POI Difference? [Re: NWALJM] #2672666
12/14/18 11:56 AM
12/14/18 11:56 AM
Joined: Apr 2017
Posts: 4,597
Elmore county
GKelly Offline
10 point
GKelly  Offline
10 point
Joined: Apr 2017
Posts: 4,597
Elmore county
just bore sight it and go hunt lol

Re: Moving Scope Forward - POI Difference? [Re: GKelly] #2672689
12/14/18 12:17 PM
12/14/18 12:17 PM
Joined: Jun 2012
Posts: 4,580
Coosa County, AL
Coosa1 Offline
SOA Professional
Coosa1  Offline
SOA Professional
Joined: Jun 2012
Posts: 4,580
Coosa County, AL
Originally Posted by GKelly
just bore sight it and go hunt lol


I worked behind a gun counter for five years and this was my biggest pet peeve. I can't tell you how many guys I've seen get their rifle bore sighted and then just take off to the woods. One of my cousins bought a laser bore sighter one year and I personally watched him readjust his scope to the laser point about a half dozen times during one weekend, between hunts, without ever firing the rifle. He'd bump it on his truck seat, stick the bore sighter in it, crank away on his turrets, and head to the stand. slap

Re: Moving Scope Forward - POI Difference? [Re: NWALJM] #2672713
12/14/18 12:36 PM
12/14/18 12:36 PM
Joined: Oct 2012
Posts: 10,563
Central, Al
Bustinbeards Offline
Booner
Bustinbeards  Offline
Booner
Joined: Oct 2012
Posts: 10,563
Central, Al
If in doubt always check it. A few Bullets are cheap insurance. One shot and you should know.


Originally Posted By: Wiley Coyote
Well, the way I see it is there's just too many assholes
On a good day there's a bunch of assholes in here. On a bad day there's too many assholes in here.
Re: Moving Scope Forward - POI Difference? [Re: Coosa1] #2672901
12/14/18 03:33 PM
12/14/18 03:33 PM
Joined: Apr 2017
Posts: 4,597
Elmore county
GKelly Offline
10 point
GKelly  Offline
10 point
Joined: Apr 2017
Posts: 4,597
Elmore county
Originally Posted by Coosa1
Originally Posted by GKelly
just bore sight it and go hunt lol


I worked behind a gun counter for five years and this was my biggest pet peeve. I can't tell you how many guys I've seen get their rifle bore sighted and then just take off to the woods. One of my cousins bought a laser bore sighter one year and I personally watched him readjust his scope to the laser point about a half dozen times during one weekend, between hunts, without ever firing the rifle. He'd bump it on his truck seat, stick the bore sighter in it, crank away on his turrets, and head to the stand. slap

a guy in our club shot at a buck a few years ago and missed he came back to the camp shot rifle to check zero and it was about 8 inches to the left and 3 inches low on paper a 100 he acted surprised and said "that guy at Walter Craig told me he bore sighted this thing"

Last edited by GKelly; 12/14/18 03:34 PM.
Re: Moving Scope Forward - POI Difference? [Re: GKelly] #2672927
12/14/18 04:00 PM
12/14/18 04:00 PM
Joined: Jun 2012
Posts: 4,580
Coosa County, AL
Coosa1 Offline
SOA Professional
Coosa1  Offline
SOA Professional
Joined: Jun 2012
Posts: 4,580
Coosa County, AL
Originally Posted by GKelly
Originally Posted by Coosa1
Originally Posted by GKelly
just bore sight it and go hunt lol


I worked behind a gun counter for five years and this was my biggest pet peeve. I can't tell you how many guys I've seen get their rifle bore sighted and then just take off to the woods. One of my cousins bought a laser bore sighter one year and I personally watched him readjust his scope to the laser point about a half dozen times during one weekend, between hunts, without ever firing the rifle. He'd bump it on his truck seat, stick the bore sighter in it, crank away on his turrets, and head to the stand. slap

a guy in our club shot at a buck a few years ago and missed he came back to the camp shot rifle to check zero and it was about 8 inches to the left and 3 inches low on paper a 100 he acted surprised and said "that guy at Walter Craig told me he bore sighted this thing"


If it was between 2012 and 2017 there's a good chance that I'm the one who bore sighted that rifle. I've seen them shoot dead on the money with just a boresight and I've seen them off by a good bit like that. I always told people that it would get them within a 12" circle.

Re: Moving Scope Forward - POI Difference? [Re: NWALJM] #2672939
12/14/18 04:23 PM
12/14/18 04:23 PM
Joined: Apr 2015
Posts: 3,287
Hartselle, AL
N
NWALJM Offline OP
10 point
NWALJM  Offline OP
10 point
N
Joined: Apr 2015
Posts: 3,287
Hartselle, AL
I will definitely be heading to the range when I get a chance.

Re: Moving Scope Forward - POI Difference? [Re: NWALJM] #2672995
12/14/18 05:32 PM
12/14/18 05:32 PM
Joined: Oct 2008
Posts: 8,142
In front of my lathe
gundoc Offline
14 point
gundoc  Offline
14 point
Joined: Oct 2008
Posts: 8,142
In front of my lathe
Yeah you'll need to check it.

As for bore sight tools. The Alley Sight Align get them closer than anything I;ve every used in the past. It ain't cheap though. Fortunately I got one in a bunch of tool I bought from an old 'smith that was getting out of the business.


I've done quite a few for folks that say they were within 4" @ 100 yards. My neighbor actually went hunting - against my urging to shoot it first - and killed a doe at about 80 yards.

Alley Sight Align

Last edited by gundoc; 12/14/18 05:33 PM.

There are two types of gun enthusiasts ... Those who have been F#CKED by PTG and those who will be!

~ unknown
Re: Moving Scope Forward - POI Difference? [Re: NWALJM] #2673009
12/14/18 05:51 PM
12/14/18 05:51 PM
Joined: Jul 2005
Posts: 9,971
Hampton Cove
foldemup Offline
14 point
foldemup  Offline
14 point
Joined: Jul 2005
Posts: 9,971
Hampton Cove
You need to shoot the gun at 100 yards if you readjust the scope or not.


If you want to always win, never play anyone better than you!
Re: Moving Scope Forward - POI Difference? [Re: NWALJM] #2673011
12/14/18 05:52 PM
12/14/18 05:52 PM
Joined: Sep 2015
Posts: 5,241
Behind your shadow
R
Reloader79 Offline
Bitch Peas, I'm a Kitty Whisperer
Reloader79  Offline
Bitch Peas, I'm a Kitty Whisperer
R
Joined: Sep 2015
Posts: 5,241
Behind your shadow
I can look down the barrel and scope at 10yds and get it within 3” at 100, then I’ll fire the rounds to zero it in. I’ve developed this method through the years and it works really good.

Last edited by Reloader79; 12/14/18 05:53 PM.

If I agreed with you, we'd both be wrong.

Bluetick serpentines around green fields and rock spit a lease
Re: Moving Scope Forward - POI Difference? [Re: Reloader79] #2673016
12/14/18 05:59 PM
12/14/18 05:59 PM
Joined: Jul 2005
Posts: 9,971
Hampton Cove
foldemup Offline
14 point
foldemup  Offline
14 point
Joined: Jul 2005
Posts: 9,971
Hampton Cove
Originally Posted by Reloader79
I can look down the barrel and scope at 10yds and get it within 3” at 100, then I’ll fire the rounds to zero it in. I’ve developed this method through the years and it works really good.


Do you put the crosshairs a certain height above the bullseye you are looking at through the barrel at 10 yards?


If you want to always win, never play anyone better than you!
Re: Moving Scope Forward - POI Difference? [Re: Reloader79] #2673044
12/14/18 06:52 PM
12/14/18 06:52 PM
Joined: Jul 2011
Posts: 34,402
Boxes Cove
2Dogs Offline
Freak of Nature
2Dogs  Offline
Freak of Nature
Joined: Jul 2011
Posts: 34,402
Boxes Cove
Originally Posted by Reloader79
I can look down the barrel and scope at 10yds and get it within 3” at 100, then I’ll fire the rounds to zero it in. I’ve developed this method through the years and it works really good.


I do this too. I put the gun in sand bags or something that will hold it. I look through the bore and perfectly center it on a spot, then move the scope till it's above the spot about the distance it's mounted above the bore. Gets them really close. Did one many years ago and didn't have to move it any when shooting it!



"Why do you ask"?

Always vote the slowest path to socialism.







Re: Moving Scope Forward - POI Difference? [Re: NWALJM] #2673049
12/14/18 06:56 PM
12/14/18 06:56 PM
Joined: Jul 2011
Posts: 34,402
Boxes Cove
2Dogs Offline
Freak of Nature
2Dogs  Offline
Freak of Nature
Joined: Jul 2011
Posts: 34,402
Boxes Cove
Originally Posted by NWALJM
I am needing to move my scope forward just a bit (on the rail) 1/2"-1". What changes should I expect with POI, if any, and how considerable would it be at say 100 yards?




I don't think it will change it much , but you still need a trip to the range.



"Why do you ask"?

Always vote the slowest path to socialism.







Re: Moving Scope Forward - POI Difference? [Re: 2Dogs] #2673110
12/14/18 08:21 PM
12/14/18 08:21 PM
Joined: Dec 2009
Posts: 9,375
Jasper, AL
J
joshm28 Offline
14 point
joshm28  Offline
14 point
J
Joined: Dec 2009
Posts: 9,375
Jasper, AL
Originally Posted by 2Dogs
Originally Posted by Reloader79
I can look down the barrel and scope at 10yds and get it within 3” at 100, then I’ll fire the rounds to zero it in. I’ve developed this method through the years and it works really good.


I do this too. I put the gun in sand bags or something that will hold it. I look through the bore and perfectly center it on a spot, then move the scope till it's above the spot about the distance it's mounted above the bore. Gets them really close. Did one many years ago and didn't have to move it any when shooting it!



I’ve done this on several guns in the past. Even ARs but that’s a little more difficult


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