When you zero, do you account for the distance between bore and sight?

[subscriber]

You seem to have a difficult time with this. I was not correcting anyone here, nor starting an argument, I was simply agreeing with a posters comment. Try to keep up while keeping your self-righteousness under control.

Actually; it is rather easy to make fun of people, that make fun of people.

You made fun of people not here to defend themselves. I made fun of someone currently wearing your shoes. What happened to your sense of humor?

[ourTINman]

The ballistic programs will interpret "zero" as meaning ignore the offset, that is, a 100-yard zero means that the crosshairs are right on the point of impact at that distance with your chosen cartridge, but if you want to use an offset, you could.

Ahh, I didn't know the ballistic calculators did that. So they can account for the fact that the barrel and the sight are not exactly parallel?

[kcheung2]

That "rising bullet" misconception is also perpetuated by the ammo makers themselves. On the boxes they often print, for example, a 25yd +1.7" adjustment, a 100yd zero, and a 200yd -3.5" adjustment, but it never mentions the fact that this phenomenon is because the barrel is angled slightly upwards. Someone unfamiliar with ballistics will assume the barrel is perfectly horizontal yet the bullet rose 1.7" above the boreline at 25 yds

[subscriber]

For those who are taking flat trajectories with rising bullets too seriously, a little light relief.

What has this to do with anything? Flattening the curve:

[SanDiego619]

Your simple image is very useful. We assume that everybody knows what a bullet trajectory looks like.

My grandfather told me that the 7 mm Mauser bullet was so fast that it "shoots flat up to 200 meters". That it started dropping only after that distance. He believed the bullet traveled in a straight line, because he just aimed at antelopes' vitals up to range, and dropped them every time.

The same misconception was repeated by my basic training instructors back in the old country, about the 5.56 x 45 . I felt it necessary to educated them; that being able to sight point blank from 50 to 200 meters did not actually mean the bullet was immune from gravity over that distance, or any distance. Just that the bullet did not drop very far in 1/10 second.

The same instructors told us that rifle bullets reached their maximum velocity at 100 m. Their grandfathers told them that, and they believed it. This basic error stems from the observation that a 7 mm Mauser would shoot through a typical Kudu broadside from 100+ meters. But, would have the bullet stop under the skin on the far side, when shot from 50 m or closer.

I explained how the accelerating force behind the bullet drops to zero as it uncorks from the muzzle. That the difference in observed penetration on the Kudu was actually due to greater higher velocity at close range. That higher velocity caused greater bullet upset on impact, creating a wider wound path with more meat damage. Rather than punish me for contradicting them, the Boer instructors had me deliver ballistics instruction to my fellow English speaking conscripts. That was 34 years ago...

ZA? I bet you have a lot of interesting stories if you were there 34 years ago. Thanks for the interesting story about the misconception regarding velocity. It is somewhat mind-boggling how they could believe the bullet was accelerating up until it reached 100 meters, but I can see how they concluded that based on the bullet penetrating only at long distances. Very interesting indeed.

There is a shop here that sells meat pies and boerewors, not my native food but I love it once in a while.

[SanDiego619]

For those who are taking flat trajectories with rising bullets too seriously, a little light relief.

What has this to do with anything? Flattening the curve:

Hah!! Oh man, that's great. See what people can do when they have a lot of time on their hands?

[subscriber]

ZA?

Dis reg meneer.

[Tanner68]

Just shoot C&R milsurp rifles. Many have the slidy adjustable rear sights. So anyone can just pick one up and shoot out to the mythical magical 1000 yard distance. Though you may have to do a little math, since the sights might be graduated in meters or arshini.

[subscriber]

[SanDiego619]

My AK47 has the sights marked for like 800 meters but I can barely hit a sheet of paper at 100 yards because the sights are so course. How the heck would you hit something that is like 1/10th the size of your front sight post?

[subscriber]

My AK47 has the sights marked for like 800 meters but I can barely hit a sheet of paper at 100 yards because the sights are so course. How the heck would you hit something that is like 1/10th the size of your front sight post?

At the risk of pissing off everyone; your AK question reminds me of another basic training anecdote:

We were told on good authority that the terrs set their AK sight to 800 meters, because they believed that increased bullet velocity - and would cause more damage. So, not to worry because if we engaged them at 200 m, the incoming rounds would pass safely overhead.








Ok. I am done, hogging this thread for my own amusement.

[ourTINman]

My AK47 has the sights marked for like 800 meters but I can barely hit a sheet of paper at 100 yards because the sights are so course. How the heck would you hit something that is like 1/10th the size of your front sight post?

Put a scope on it?

[SanDiego619]

Put a scope on it?

Komrad, we are eating tree bark soup. Do you think they will give us scopes?

[Barang]

i knew it! the gubs is telling the truth when they say "flatten the curve" will happen at 75 days if we all stay at home and do our part. enjoy corona beer while in lockdown.

[Transient]

I always thought all you needed was a sling?

Come on devil dog. The sling is for support with the hand holding the hand guard. The person using the rifle still moves, including up and down movement when breathing. Don't make me take you back to Edson Range, lol. Prone is the most stable position, but using a device that holds and supports the rifle is a more left scenario. I have found that it doesn't take much to use a sandbag or decent sized pack to support the rifle while in the prone or sitting position works good enough with consistently hitting the target and making adjustments on the sights. I was taught on the A2.

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