Shot Group Card - Page 2

Sport45 · December 25, 2012, 05:17 AM

The gun is moving before the bullet leaves the barrel. Different holds/grips will get different impact points.

I too, would expect two different, accurate shooters to hit two different places on the target using the same sight picture.

On the card, are you sure anticipating recoil results in high/right hits? I thought that would manifest itself in pushing the gun down resulting in low hits.

sfmedic · December 25, 2012, 06:03 AM

if the sight picture is lined up the same then the strike of the round will be the same . In reference that graphic - bcd line up like it lines up - you could weld a steel bar from the rear site to the center of the bull - the lineup is what it is

what i am missing i guess is what goes on behind the rear site that could change the strike of the round if they have a correct sight picture.

I BZO / Zero guns for students all the time - when its zeroed its zeroed anyone can hand a gun to anyone else and get the same results. My job is to teach the students how to get consistent accurate shot-groups using the fundamentals after the zero is good. I've never been unable to do that and have never had to physically change the sights because of some "individual sight picture"

I think the high shot comes from the cowboy shooters stuff - I dont see high very often and when i do its having the front sight high in the sight picture - easy fix

Sport45 · December 25, 2012, 07:33 AM

But on many revolvers the line from the top of the rear sight to the top of the front sight lines up on the target well above the bore axis. Do you really think everyone is going to allow the muzzle to climb the exact same amount as the bullet travels down the barrel?

JimPage · December 25, 2012, 09:13 AM

There is no doubt that different people had different points of impact with what they assume to be the same. I don't know exactly what the difference can be attributed to, all I have are different theories why. But it IS a fact that it happens.

btmj · December 25, 2012, 12:10 PM

sfmedic, your graphic is excellent, and it makes it easier to discuss this target.

Your sight picture shown is how I sight a handgun, but others prefer (or naturally use) a different sight picture. I know many shooters who use a 6:00 hold, and they want the target centered above the front sight post. How high above? well, that is hard to say, and it is one reason why I like to center the target on the top edge of the front sight.

December 25, 2012, 05:17 AM	#26
Sport45 Senior Member Join Date: May 25, 1999 Location: Too close to Houston Posts: 4,196	The gun is moving before the bullet leaves the barrel. Different holds/grips will get different impact points. I too, would expect two different, accurate shooters to hit two different places on the target using the same sight picture. On the card, are you sure anticipating recoil results in high/right hits? I thought that would manifest itself in pushing the gun down resulting in low hits. __________________ Proud member of the NRA and Texas State Rifle Association. Registered and active voter.

December 25, 2012, 07:33 AM	#28
Sport45 Senior Member Join Date: May 25, 1999 Location: Too close to Houston Posts: 4,196	But on many revolvers the line from the top of the rear sight to the top of the front sight lines up on the target well above the bore axis. Do you really think everyone is going to allow the muzzle to climb the exact same amount as the bullet travels down the barrel? __________________ Proud member of the NRA and Texas State Rifle Association. Registered and active voter.

December 25, 2012, 09:13 AM	#29
JimPage Senior Member Join Date: February 21, 2010 Location: Rome, NY Posts: 941	There is no doubt that different people had different points of impact with what they assume to be the same. I don't know exactly what the difference can be attributed to, all I have are different theories why. But it IS a fact that it happens. __________________ Jim Page Cogito, ergo armatum sum

December 25, 2012, 06:03 AM	#27
sfmedic Senior Member Join Date: December 2, 2012 Location: Currently Erbil, Iraq Posts: 106	if the sight picture is lined up the same then the strike of the round will be the same . In reference that graphic - bcd line up like it lines up - you could weld a steel bar from the rear site to the center of the bull - the lineup is what it is what i am missing i guess is what goes on behind the rear site that could change the strike of the round if they have a correct sight picture. I BZO / Zero guns for students all the time - when its zeroed its zeroed anyone can hand a gun to anyone else and get the same results. My job is to teach the students how to get consistent accurate shot-groups using the fundamentals after the zero is good. I've never been unable to do that and have never had to physically change the sights because of some "individual sight picture" I think the high shot comes from the cowboy shooters stuff - I dont see high very often and when i do its having the front sight high in the sight picture - easy fix

December 25, 2012, 12:10 PM	#30
btmj Senior Member Join Date: November 1, 2011 Location: Near St. Louis, Missouri Posts: 864	sfmedic, your graphic is excellent, and it makes it easier to discuss this target. Your sight picture shown is how I sight a handgun, but others prefer (or naturally use) a different sight picture. I know many shooters who use a 6:00 hold, and they want the target centered above the front sight post. How high above? well, that is hard to say, and it is one reason why I like to center the target on the top edge of the front sight.