point of impact

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deputy bruce

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just would like to know or I should say we all including me shoot at 100 or 200 plus yards my question is have you fired your rifle at 40' to find out where it shoots at that number of feet? I just wanted to know thanks bdm
 
Sure. I have several rifles that I fire at distances closer than 100 yards sometimes, and it is helpful to know where the bullet will be at a given (closer) distance. Especially things like AR-15s and AKs which have a high sight or optics line over the bore and so can print a lot lower than you'd expect at closer distances.
 
In my experience if you sight it in at 100 yards it will usually be hitting within an inch of your original POI at 25 yards. The opposite is definitely not true. I know people that sight in at 25 yards and go hunting. You can be a foot off at 100 yards if you do this. I agree with the previous poster that on a rifle that has a high mounted optic like an AK and AR it can be off as much as 2 inches low at 25 yards but still that is on target in all practical instances. You sight in at 100 and you should be good to go at anything less than that.
 
I agree it is good to know where you gun hits at different ranges from where you zeroed. Also make sure you are sighting in at a good distance. A home defense rifle probably doesn't need to be zeroed past 50 yards. Just have an idea where it will hit at 100 yards or more.
 
My friend's granddaughter deer hunts with my Armalite M15A4 .223 Remington rifle. We've spent numerous hours on the range with her and that rifle. At 100 yards it is dead on and she can keep an entire 10 round magazine of Sierra 65 grain Gameking bullets inside of a chewing tobacco can. Just this past Sunday she shot the same rifle and bullet combo at steel targets set at 170 yards, 235 yards, 290 yards and 350 yards with first round hits on all targets except 350. She has killed 4 deer in the last 4 years, 3 of them with my AR .223. She missed two deer with it last fall before she got her nice 8 point out at 120 yards. I believe the first deer she missed last year was at around 75 yards and the second deer was at less than 20 yards. To boost her confidence after two misses I took the rifle out to the range and shot it at 100 yards, dead on...then I shoot it at 15-17 yards sitting on the ground just like she was and put two rounds on target that were touching each other. They were an empty .223 shell casing below my point of aim dot at that close range. After she got her big 8 point I teased her about missing on purpose so she could get that deer. I actually don't believe she missed on purpose but after checking the equipment she should not have missed anything.
 
Of course, some guns I shoot at 100 or two hundred yards are not even zeroed at that range. Pretty simple with some reticles, or actually change zero with a certain number of "clicks"
 
40' is 13 yards. At 13 yards, a POI being high or low won't make much difference. Closer than that can though. Missed a ground hog one time from prone at less than 3 feet. Still laugh about it.
 
I know people that sight in at 25 yards and go hunting. You can be a foot off at 100 yards...
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Uuuuuhhh... that would show up as 3" off at 25 yards, so I have a hard time with that.
A true zero at 25 yards using standard scope/AR sight height off the barrel is a dogone good battlesight [aka big game] for most all highpower rounds.
See: http://thefiringline.com/forums/showpost.php?p=4152236&postcount=9

Naturally I'm paranoid and want extended range data too. But if 25 is all I have to work with...
 
Uuuuuhhh... that would show up as 3" off at 25 yards, so I have a hard time with that.
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I have no trouble believing it at all. Yes, if it's sighted in perfectly at 25 yards, but more often, sighting in at close range does not make "being off" nearly as noticeable resulting in less than perfect sighting in. I can shoot pretty good groups with a smoothbore shotgun at 25 yards, that wouldn't be up to task at 100 yards.
 
Yes. It's more important the further the scope is mounted from the bore and the further distance the scope is zero'ed for. From zero in to near zero, POI will be higher that POA. At near zero, POI = POA. From near zero in, POI will be lower than POA. It's important if you want to hit a small target at close range.

I know someone that learned this lesson when using a truck bed as support when sighting in a 30-06. To make it worse, it was his mother's truck.
 
Being a foot high at 100 yards with a 25 yard zero would really be a stretch. But an AR with it's sights designed the way they are would be pretty close to a foot high at 200 yards and high enough at 100 to easily shoot over a target.

Standard hunting rifles typically have sights much closer to the bore and this is much less of a problem.
 
Use ballistic software to plot a chart bullet path from muzzle to some range further than target range. It will be worth a million words in print.

Here's what Sierra's software shows for a 55 gr. FMJBT bullet shot from a .223 Rem does zeroed at 25 yards through 425 yards:

21817687956_a2272e720f_b.jpg

I used a front sight height above bore of 2 inches.
 
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Uuuuuhhh... that would show up as 3" off at 25 yards, so I have a hard time with that.
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Depends on sight height above bore and bullet trajectory. If you're shooting a .223 with 55 gr FMJ @ 3,200 FPS and your optic is 2" above bore, a 25 yard zero will have you 4-1/2" high at 100, 7" high at 200, and back on zero at ~360 yards. But if your optic is 3.5" above bore, a 25 yard zero will have you 9" high at 100 yards, 18" high at 200 and 21" high at 300, not seeing zero again until about 500.
 
jmorris, did you ever think about changing your quote to:

"My right to swing my arm ends at least an inch back from the tip of your nose."

If it stop at the tip of ones nose, they'll barely feel it.
 
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