Zeroing M6 Tactical Laser/Light Problem - XDTalk Forums - Your HS2000/SA-XD Information Source!

BMFOTP · 07-18-2007, 01:56 PM

I went to the range today and attempted to zero my M6 Laser/Light and I encountered this problem. When I zeroed the M6 at 25 yards my XD .45 Compact would shoot low at 10 yards. When I zeroed my XD .45 Compact at 10 yards the weapon would shoot high at 25 yards. Do I have to choose between where I want my weapon zeroed? Is this a natural occurance with zeroing a weapon or am I doing something wrong. All advaice is appreciated on this topic.

Myk9noseknows · 07-18-2007, 03:12 PM

To "zero" is the concept of where you want the bullet to land at a certain distance.
You cannot expect to zero in at 25 yards and still have it perform point of impact at 10 yards. You're talking about 115% difference in distance from each point.

nickb · 07-18-2007, 03:21 PM

I'm sure you'll get an experienced answer, but I'm bored so here goes.

At those distances, I doubt the bullet will drop measurably. My suggestion would be to measure the distance below the barrel to the sight and adjust accordingly. In other words if the sight is 1" below the barrel, adjust it to aim parallel and hit the target 1" below the actual point of impact.

I'll bet it will be much more consistent at more distances this way.

Just curious though, how low is it at 10yds when you 0 at 25? If it's close to an inch, I'd probably go with that.

BMFOTP · 07-18-2007, 06:19 PM

Thanks for the responses to my question. From what I have gathered from the two post I will zero my weapon at 15 yards. That is the furthest I hope to have to shot at in a defensive situation. If I have to shot further I will adjust my aim accordingly since hopefully I will have more time to aim.

bherbert28 · 07-19-2007, 05:58 AM

Just remember that ballistics is a tricky little beast. You can zero your weapon perfectly, then change one small thing and it will change your zero. Such as if you zero with 165 gr target ammo, then plan to shoot 180 gr JHP that will affect your zero. Also temprature and a bunch of other factors will all effect your zero. My advice, try to zero with the same ammo you plan to use for "go time", and then zero it at a distance that is a happy medium to where you plan (or hope) to shoot. Then practice, practice, practice. If you have a tight shot group a difference of an inch won't be a huge deal. I am not a pro, but just an attempt to help. Take it or leave it. Good luck.

BMFOTP · 07-19-2007, 05:30 PM

Thanks for the input on the other factors that affect zero. I will take your information and put the information away for my next range day.

07-18-2007, 01:56 PM	#1
BMFOTP XDTalk 100 Member Join Date: Jul 2007 Posts: 309	Zeroing M6 Tactical Laser/Light Problem I went to the range today and attempted to zero my M6 Laser/Light and I encountered this problem. When I zeroed the M6 at 25 yards my XD .45 Compact would shoot low at 10 yards. When I zeroed my XD .45 Compact at 10 yards the weapon would shoot high at 25 yards. Do I have to choose between where I want my weapon zeroed? Is this a natural occurance with zeroing a weapon or am I doing something wrong. All advaice is appreciated on this topic.

07-18-2007, 03:12 PM	#2
Myk9noseknows XDTalk 1K Member Join Date: Dec 2006 Posts: 1,750	To "zero" is the concept of where you want the bullet to land at a certain distance. You cannot expect to zero in at 25 yards and still have it perform point of impact at 10 yards. You're talking about 115% difference in distance from each point. __________________ "When people need help, they call the Police. When Police need help, they call K-9"

07-18-2007, 03:21 PM	#3
nickb XDTalk 1K Member Join Date: Jul 2006 Posts: 1,949	I'm sure you'll get an experienced answer, but I'm bored so here goes. At those distances, I doubt the bullet will drop measurably. My suggestion would be to measure the distance below the barrel to the sight and adjust accordingly. In other words if the sight is 1" below the barrel, adjust it to aim parallel and hit the target 1" below the actual point of impact. I'll bet it will be much more consistent at more distances this way. Just curious though, how low is it at 10yds when you 0 at 25? If it's close to an inch, I'd probably go with that. __________________ No PM sent..... But the average human can travel 21 feet in just one second. Last edited by nickb : 07-18-2007 at 03:57 PM.

07-18-2007, 06:19 PM	#4
BMFOTP XDTalk 100 Member Join Date: Jul 2007 Posts: 309	Zeroing M6 Rail Laser/Light Thanks for the responses to my question. From what I have gathered from the two post I will zero my weapon at 15 yards. That is the furthest I hope to have to shot at in a defensive situation. If I have to shot further I will adjust my aim accordingly since hopefully I will have more time to aim.

07-19-2007, 05:58 AM	#5
bherbert28 XDTalk Member Join Date: Apr 2007 Location: Georgia Posts: 88	Just remember that ballistics is a tricky little beast. You can zero your weapon perfectly, then change one small thing and it will change your zero. Such as if you zero with 165 gr target ammo, then plan to shoot 180 gr JHP that will affect your zero. Also temprature and a bunch of other factors will all effect your zero. My advice, try to zero with the same ammo you plan to use for "go time", and then zero it at a distance that is a happy medium to where you plan (or hope) to shoot. Then practice, practice, practice. If you have a tight shot group a difference of an inch won't be a huge deal. I am not a pro, but just an attempt to help. Take it or leave it. Good luck. __________________ THESE are the times that try men's souls. The summer soldier and the sunshine patriot will, in this crisis, shrink from the service of their country. Tyranny, like hell, is not easily conquered; yet we have this consolation with us, that the harder the conflict, the more glorious the triumph. -Thomas Paine

07-19-2007, 05:30 PM	#6
BMFOTP XDTalk 100 Member Join Date: Jul 2007 Posts: 309	Medium Zero Thanks for the input on the other factors that affect zero. I will take your information and put the information away for my next range day.

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