Notices by Account: Firearms (gat@mu.zaitcev.nu), page 3

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Account: Firearms (gat@mu.zaitcev.nu)'s status on Saturday, 02-Mar-2024 04:23:03 JST Account: Firearms

There is a lot of intuitive understanding of how the gun actions work floating around that is simply wrong. And a lot of it has to do with human everyday common sense being unable to grasp a scale greater than 1 hundred. You must trust the math in order to operate in this area of gun design.

My favourite example is how many people assume that the recoil spring does anything in a blowback action aside from pushing the bolt into battery. But I made calculations for some common guns (such as AR9), and it never delivers more than 1% of the force resisting the bolt thrust when firing, and less than 0.2% for larger calibers like 10mm. The whole work of keeping the breech closed is done by the mass of the bolt. Spring does absolutely nothing!

Some of the blowback actions, such as Astra 600, have heavy recoil springs. But they only do that in order to improve the longevity of the gun.

P.S. I did not look into the numbers for the Oerlikon 20mm. I don't have the data or the time. Yes, its recoil spring is crazy strong, enough to require a pulley to charge. Even so, it may yet fall under the 1% - this is how great the bolt thrust of 20mm cartridge is.

#guns #銃

In conversation Saturday, 02-Mar-2024 04:23:03 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Thursday, 22-Feb-2024 06:59:13 JST Account: Firearms
in reply to
@shibao @evelyn @animeirl @kaia @vivi @meso @lucy @anemone I'd just get a modern AR-10. I have a CETME-L and while it's quite enjoyable, it's practical value is a bit suspect. Night sight dots have long since fell out. Also it's heavy! Not quite BAR heavy, but AK feels lightweight in comparison.

In conversation Thursday, 22-Feb-2024 06:59:13 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Thursday, 22-Feb-2024 05:42:31 JST Account: Firearms
in reply to
@meso @kaia @anemone @shibao @evelyn @vivi @lucy @animeirl Cheap substitute mags for G36 go well with dumb scribbles on the skin.

In conversation Thursday, 22-Feb-2024 05:42:31 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Thursday, 15-Feb-2024 12:38:36 JST Account: Firearms
in reply to
- 受不了包
@shibao I was wondering how it was possible for the average to be this low. If you divide guns by population, then sure. But these studies supposedly remove the gunless.

Then one day my wife told me about her friend, who has "a Colt". She is a widow and inherited it from her dead husband. I presume it's a 1911 and not a SAA or Pocket Hammerless. But apparently there's a ton of people who only have one or two. They skew the average.

In conversation Thursday, 15-Feb-2024 12:38:36 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Thursday, 08-Feb-2024 08:58:26 JST Account: Firearms

https://matadorarms.com/product-category/magazine-adapter/

Apparently, Matador Arms no longer offer a CZ-75 adapter for AR9 builds. Last time I checked was in 2019, or 5 years ago.
In conversation Thursday, 08-Feb-2024 08:58:26 JST from mu.zaitcev.nu permalink
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1. Domain not in remote thumbnail source whitelist: matadorarms.com
  
  Magazine Adapters - Matador Arms LLC
  
  Convert your AR-15 lower receiver into an AR-9 that can utilize Glock® or SigSauer® double-stack mags with our Mag-X Magazine Adapter!
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Wednesday, 24-Jan-2024 08:05:44 JST Account: Firearms
in reply to
- narcolepsy and alcoholism :flag:
@hj Yeah but if they don't stick to the print, then you should be able to peel them off by hand. For some of the more convoluted prints, I upped the horizontal distance to 120% of shell.

In conversation Wednesday, 24-Jan-2024 08:05:44 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Wednesday, 24-Jan-2024 07:46:11 JST Account: Firearms

I understand now why everyone is so obsessed with organic supports. The weight of the print went from 50g to 37g. That's a quarter less filament!

#3dprint
In conversation Wednesday, 24-Jan-2024 07:46:11 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Monday, 22-Jan-2024 23:30:04 JST Account: Firearms

I see what happened. The SHOT Show started today.

In conversation Monday, 22-Jan-2024 23:30:04 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Saturday, 20-Jan-2024 02:00:01 JST Account: Firearms
@0 @shibao @splitshockvirus If you like it, why not? A universal value is a marxist myth.

In conversation Saturday, 20-Jan-2024 02:00:01 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Saturday, 20-Jan-2024 01:59:59 JST Account: Firearms
in reply to
@0 @shibao @splitshockvirus I do not do it often, but I paid in excess of market value for my SU-16. Most of the time it's done for expediency.

In conversation Saturday, 20-Jan-2024 01:59:59 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Thursday, 11-Jan-2024 21:35:00 JST Account: Firearms

https://www.youtube.com/watch?v=D5gXify4scA

Ian McCollum posted a video on SVT-40, talking about its seminal gas system, among other things, but he neglected to mention one of its most unusual features: the barrel has no gas port. The front part, which includes the gas diverter and the set for regulator, front sight tower, and the muzzle brake, is made in one piece, and attaches to the actual barrel as a muzzle device. Heck I think it's not rifled.

The gas port phobia around the 1930s was a real thing, and that is why early Garands and G.41 had gas traps. But in case of SVT-40, there's no trap as we recognize it, only a barrel extension.

I admit, I'm curious if Ian is aware of this.

#guns #銃
In conversation Thursday, 11-Jan-2024 21:35:00 JST from mu.zaitcev.nu permalink
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1. SVT-40: The Soviet Standard Semiauto from WW2
  
  from Forgotten Weapons
  
  Get Entered to WIN this incredible Tokarev SVT-40!https://go.getenteredtowin.com/forgottenweaponsDEADLINE to ENTER is 01/26/24 @ 11:59pm (PST). The Red Army ...
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Thursday, 14-Dec-2023 03:06:48 JST Account: Firearms

https://www.congress.gov/bill/117th-congress/house-bill/4225

Always the but.

Also! Every time someone talks shop on a forum, we always have the weak-minded come in with "but the barrel is not preeeeeeented", "but my AR is so much cheeeeeeper". Look how scared the 3D made them. Print more guns!
In conversation Thursday, 14-Dec-2023 03:06:48 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Tuesday, 12-Dec-2023 14:31:50 JST Account: Firearms
- 受不了包
@shibao I was hoping on getting to shoot together somewhere, but I guess I'm not enough to a social butterfly.

In conversation Tuesday, 12-Dec-2023 14:31:50 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Tuesday, 12-Dec-2023 13:00:31 JST Account: Firearms

I swear I didn't see this video before I ordered the C-note for Christmas.

https://www.youtube.com/watch?v=szezihfY4oU
In conversation Tuesday, 12-Dec-2023 13:00:31 JST from mu.zaitcev.nu permalink
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1. Mark LaRue's Latest Meme
  
  from Hop
  
  The C-Note looks like what would happen if Mark LaRue set out to make an QD bayonet mount to compete with the Geissele Super Stabby Mount, but changed his mi...
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Tuesday, 12-Dec-2023 13:00:30 JST Account: Firearms
in reply to
- Account: Firearms
Because I live in the same town with Mark LaRue, I met a number of people who met him, but I have not met the man. It just have not happened ... yet.

In conversation Tuesday, 12-Dec-2023 13:00:30 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Friday, 08-Dec-2023 02:58:13 JST Account: Firearms
- SuperDicq
- 受不了包
@shibao @SuperDicq https://knowyourmeme.com/memes/gondola
In conversation Friday, 08-Dec-2023 02:58:13 JST from mu.zaitcev.nu permalink
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1. Domain not in remote thumbnail source whitelist: i.kym-cdn.com
  
  Gondola
  
  from @knowyourmeme
  
  Gondola is a mutation of Spurdo Spärde consisting of a head placed directly on a pair of legs with no arms or torso. The character does not speak and is usually depicted as melancholic or sad.
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Thursday, 23-Nov-2023 12:12:54 JST Account: Firearms
- 受不了包
@shibao I hoped the thread would give you ideas.

In conversation Thursday, 23-Nov-2023 12:12:54 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Wednesday, 22-Nov-2023 09:45:05 JST Account: Firearms
- 受不了包
- shibao
@shibao @shibao FYI https://www.ar15.com/forums/Armory/Ammo-Inventory-App-/2-547821/
In conversation Wednesday, 22-Nov-2023 09:45:05 JST from mu.zaitcev.nu permalink
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1. Domain not in remote thumbnail source whitelist: www.ar15.com
  
  Ammo Inventory App? - AR15.COM
  
  from AR15.COM
  
  Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Tuesday, 21-Nov-2023 12:45:42 JST Account: Firearms

RBC-9 is rad af
(despite the wimpy cartridge)
In conversation Tuesday, 21-Nov-2023 12:45:42 JST from mu.zaitcev.nu permalink
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Account: Firearms (gat@mu.zaitcev.nu)'s status on Tuesday, 21-Nov-2023 01:08:11 JST Account: Firearms
in reply to
- Slow Rodriguez
@Rocc I am not Jerry Miculek, but I think that the only time you need to account for height over bore is when aiming for the head A zone at closer than 10 yards.

In conversation Tuesday, 21-Nov-2023 01:08:11 JST from mu.zaitcev.nu permalink

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