Yup....exactly know what you mean when PBR is portrayed like that. Irks the heck out of me when I'm the only one in the room that knows its total misconception of what PBR actually is.

I'm one of those people who thought it was distance from the muzzle. Interesting.

Point Blank Range is one of the most abused terms thrown around and abused by the media. Some many of my shooting buds will swear red faced that bullets will fly and rise.

Since when do tv news, movies get anything right?

I use a cap off a 2 liter drink bottle and sight my rifles in at 25 yards if I can hit that at 25 i can take any thing from deer to rabbit if I have a clear line of sight to 100 that is about as far as you can see something in the woods of east Tennessee

I shoot a 7mm and scope set at 100 yards would it still be accurate at closer range even tho it’s set at 100 yards?

@@John-ck7gv Yes, it will be real close. Maybe a couple inches low at 25 or so, depending on distance between reticle and center of bore.

ahhhh it's all over the internet-LMAO. Now I know why these type of videos are made-LOL I guess your mommy had to spoon feed you everything-lol

Vince F Your watching this video too fucking idiot

You need to add in the normal variability in you groups at that distance, so if the kill zone is 10 inch and your practical group is 5 inch at 400yards,(In the field conditions with reasonable margin for unknowns in windage, barrel temp and air conditions. 5" at 400 is still a tight 1.25MOA) then your maximum point blank target should be no more than 4.5 inch height(height is a more accurate term here than diameter) or 2.25" up or down from center. 4.5+5+0.5=10" top to bottom or 2.25+2.5+0.25=5" from center. Say you are mathematically at the top or bottom edge of the PBR, half of your group will be in your favor to the inside and half will be outside, so an extra 2.5" from center(5"total) must be added for a 5" group, and the 0.25" from center is just an extra margin to compensate for optimistic estimates and errors in baseline measurements. Since an ideal PBR at 400yds with most rifles will be larger than 4.5" total height and 1.25moa is pretty optimistic, the answer is no you can't stretch it to 400yds. That is total target height minus group diameter(at that range) minus any extra margin you want equals required PBR height. Divide this in half for distance from center. The allowable PBR height will be larger at closer ranges because the same MOA will result in smaller groups and have lesser effects from uncertainty in variables. So basically you do the calculation (target height minus group size minus margin=PBR height) for every 50 yards until you hit a PBR height that matches your rifle&ammo ballistic capability.

A good range finder that will read accurately off of soft targets (animals, safebrush, etc.) out to 400 yards is all a guy needs once your scope is properly zeroed in for MaxPBR. Or, you can use the mil dots /moa dots in your scope's reticle to quickly and "reasonably estimate" the range to target if you know about how big the target is compared to the spread between dots at 100 yards.

Really? So the bullet can rise after it leaves the muzzle? The reason I ask is because of gravity. Seriously though I am almost positive the bullet doesn't ever rise,only drops. What am I missing here? Thank you for any effort attempting to teach me.

@Klevee. The bullet rises above line of sight because the rifle bore is angled up relative to the line of sight. The bullet does not rise above the bore line after leaving the muzzle.

Not really. It could have been explained so much better. LMAO

@@vincef5832 And I seriously doubt you can do any better? 🖕🏽

In military marksmanship, this is known as "battlesight zero".

Not necessarily broken. You only hit the x-ring twice, but stay in the black from zero to 225 yards. Vertically. Accounting for wind drift and trigger control is still a matter of skill.

@@bgallaher77 skill helps but dumb luck can never be under estamated lol

@@bgallaher77 ringo isn't talking about the PBR height extremes. The bullet generally passes through the exact line of sight twice with scopes that are mounted above the barrel. The only exception is when the line of sight is exactly tangent to the bullet arc, which only happens with a zeroing range that results in a bullet rise exactly equal to the height of the scope line of sight above the muzzle. Any shorter zeroing range will have the bullet climbing through the reticle(and eventually falling back through if it doesn't hit anything), and any longer range will have the bullet falling through the reticle(after first climbing through).

Depends on the cartridge also

Yeah every gun I own except my 300 is zeroed 1 1/2 inches high at 100 yards easy peasy.

Thanks!

Hi, The video that you watched might have been how to bore site your scope to the barrel of your rifle. These guys are talking about ballistics and where to shoot after you have bore sited your scope. Hope that helped. Hope I'm correct. Peace

No, its called a 25yrd zero. It will keep you within the kill shot of a deer. From 100 to 300 yrds.

What about on a . 22?

Right on. I had an AR-15 a long time ago with the A2 configuration, and a scope mounted on top of that. It me a while to figure out that there was quite the arc with the scope that high above the barrel. All the ballistic calculators assume one inch sights above the bore axis, which I am pretty sure doesn't hold true in today's scope filled world, and definitely doesn't hold true on the AR platform.

It's all about the bullet data.

@Buddy Chat I seldom if ever kill past 400 yards ..... 178 grain zero at 325 ..... holdunder 6" between 100 and 200 yards ..... 275 is 3" holdunder .... 400 is 10" hold over .... that's it....yup .... I shoot off of top of crosshair ..... further out and for windage I use the graduations on the crosshairs ..... I am an old man and that is old school but it does pretty well for me..... I still shoot old model 70

@Meh Right you are my friend! Ex sniper here. 89-93". Cheers!

So what distance is close range zero? 26 yards ive got zeroed for on my 270, 130 grains. Its from a website on point blank range.

Usually I am not a fan of sighting in that close. Yes, the math/ballistics show that it can work. The propagation of error is what makes it tricky. Your range to target needs to be more exact than when sighting in at 25 vs 100 yards. One MOA is 1.04 inch at 100 yards, and rounding to 1 inch is good enough. 1 MOA at 25 yards is 0.26 inches. You have to be very precise if you are one quarter of an inch off at 25 yards, you are 4x off at 100, etc. So, it should work at 25 yards but bring a tape measure and be precise. Ahh, and you posted you would not be shooting past 100 yards. Kill zone on a deer is 10 inches wide and 18 inches tall when taking a broadside shot? The lungs alone are the size of a salad plate, with heart below and arteries and spine above. So, being off even a couple inches is fine in that scenario. My opinions. Oh, I usually sight in starting with a shot at 10-15 yards. Then a couple more at 50. Then final adjustments at 100. Sometimes I have to make larger than expected changes as I get further out.

Is good zero 25y zero for hunting loads I do the same i zero my 30.06 at 25 yard , from 0 yard to 325 yard is less then a 4” group with Hornady 150grain gmx superformer bullet . Use shooterscalculator.com

Well, gravitational acceleration is 32 ft per second squared. Bullet starts to drop immediately once it leave the barrel just as fast as if it fell of the end of the shooting bench. When the bullet has travelled a full second it will have fallen 16 feet.

@@bgallaher77 So basically the barrel is always slightly canted upwards, no matter what distance zero you are setting for? So everytime the bullet exits a barrel on any gun, it always climbs upwards first and peaks half way between the barrel and the set zero, before descending towards the set zero...right?

Think of the football quarterback. If you are throwing a long pass, you have to lob the ball pretty high up. One, the scope is around 2” above the barrel. So, no matter what the barrel will have to be turned slightly up for the bore of the barrel to be pointed where the scope points. After all, you cannot aim a gun by looking down the barrel. The “zero” is where the Point of impact is the same as the line of sight. Typical I sight in for a 200 or 230 yard zero. That means I want the bullet to hit about 3” above my point of aim at 100 yards. Between the shooting bench and the target the bullet has been lobbed so that it travels over the point of aim and then hits the target. If it had not hit the target it would continue to travel on the arc and then start to fall. With a 200 yard zero the bullet would hit the point of aim on a target at 200 yards. Now, air drag dramatically slows the speed of the bullet, so the peak or the arc is somewhat closer to the target at 200 yards then the rifle.

@@bgallaher77 Thank you for the excellent explanation. Would it be fair to say that with all things being equal, the arch of the typical 308 bullet would be less pronounced if zeroed at 100 yards as opposed to being zeroed at 300 yards? I kind of like the analogy of shooting through a 6 inch pipe...so basically instead of shooting through a 6 inch pipe, the closer distance would be like shooting through say 3 inch pipe instead?

Absolutely. In the real world, there would be very little arc to about 125 yards if you sighted in at 100 yards. And, if you only plan to shoot targets with 150 yards or so then that is fine. Where I hunt it pretty wide open and a 200 to 300 yards shot is not uncommon. So, I use a 230 ish yard zero so that I do not have to guess at distance or worry about hold over.

So, where the rubber meets the road is the change in point blank range. What is the difference in point blank range? Is it a meaningful difference? Most people will be shooting a 556 using. 16” barreled carbine. Yes, you can get 18”, 20”, 24” as well. 223 is probably shot out of a sporting rifle with a 22” barrel. Is there really a meaningful difference after the bullet leaves the muzzle? Edit: published velocity is almost always from a 24” barrel.

Make your own video

Pretty sure the video covered this. The arc of the bullet causes it to rise above the line of sight because of its trajectory (like a football... which is thrown up and not perfectly horizontal). The video did not imply or state that the bullet has lift like an airplane wing.

Calc Bullet Drop in MOA or Clicks come up ballistics kzfaq.info/get/bejne/idN0d7Oi28nYpJ8.html

@@bgallaher77 Probably because of 6:44 where you said it is rising. I understand you meant rising in relation to your viewpoint through the scope though.

en.m.wikipedia.org/wiki/Point-blank_range