The right way to make a battle rifle!

[m4brian]

https://m.youtube.com/watch?v=XEFALN8D8t0

[Fox33]

I'm oberdorf gemacht

[SteyrAUG]

That was completely fascinating.

[Leaveammoforme]

Interesting, definitely worth a watch.

Hammer forged for the win along with an original boresnake sighting.

OP video, just going to embed.

[halmbarte]

They don't make them like that anymore, unless you go to Pakistan, Iran, or Turkey.

H

[The Dumb Gun Collector]

Holy crap that is awesome. They should have just kept developing that thing.

[pinzgauer]

Interesting, definitely worth a watch.

Hammer forged for the win along with an original boresnake sighting.

OP video, just going to embed.

Amazing, how did we not find this earlier!

Answers some questions (hammer forging process, etc).

All also was interesting to see the flyer on the target. I'm wondering if they just loaded five rounds and that was on the last round.

[Firefly]

I love these old films. The AR-10 and now this.

FAL was good but the HK G3 was pretty high speed for its era.

To be fair, they did develop it well into the 1980s with the HK G41. But by then money and so forth kind of killed it.

It was an HK 33 style rifle that took AR mags.

The cold war was an interesting era for small arms

[SteyrAUG]

I love these old films. The AR-10 and now this.

FAL was good but the HK G3 was pretty high speed for its era.

To be fair, they did develop it well into the 1980s with the HK G41. But by then money and so forth kind of killed it.

It was an HK 33 style rifle that took AR mags.

The cold war was an interesting era for small arms

The G11 and end of the Cold War is what almost killed HK. All that R&D for a weapon that might never have been completely worked out so the contracts never came. Then Germany unified and the west absorbed the cost of restoration for the east.

[Aries144]

Amazing, how did we not find this earlier!

Answers some questions (hammer forging process, etc).

All also was interesting to see the flyer on the target. I'm wondering if they just loaded five rounds and that was on the last round.

I'm curious, what did you find interesting about the flyer?

Trying to figure out what factors influence mechanical firearm accuracy has been a pet project of mine for the last year or so.

Here's another video that displays parts of the cold hammer forging process: https://youtu.be/bNjCtpeMYHk?t=1016

More info on cold hammer forging: http://projects.nfstc.org/firearms/m...m04_t06_07.htm

Note the first paragraph on this page regarding "what makes a barrel accurate"

Comments from the last link match comments from other sources I'm finding.

Here's a post from Definitive Arms on Facebook on CHF AK barrels that's since been removed:

"Russian CHF barrels can be a bit of a gamble when it comes to accuracy.
Some are better than others, and this becomes apparent when dialing them in on a lathe for fine machining. In particular the concentricity between the lands and grooves inside the barrel. Not all barrels are consistent. They can be out of round and not capable of achieving <.001" run out, or better, between the grooves.

In this particular case, Robs action (born of a 5.45 Saiga) was hand picked from our own stock for one of the better barrels. Dialed in to damn near perfect zero, with the width of the lands seemingly consistent as well."

Considering that Steyr does make a sniper rifle that features a CHF barrel, this leads me to understand that cold hammer forging can either produce very precise barrels or poor shooting barrels, depending on some factor or factors.

It appears that an important factor is whether or not all the grooves are pressed into the barrel to uniform depths. I can see how not having uniform groove depths could result in a situation where the bullet's center of rotation (from the rifling) and the bullet's center of mass don't line up. An exaggerated visual representation of the bullet traveling down such a bore would be an aircraft performing a barrel roll. The bullet fully stabilizes shortly after leaving the barrel, but no two bullets are going to stabilize exactly the same, so the greater the bullets' initial angle of attack, the greater the likelihood that any group of bullets are going to stabilize on more widely varying trajectories from one another.