Comments on: The Pedersen device https://gunlab.net/the-pedersen-device/ Adventures in gun building! Sat, 11 Apr 2026 23:49:22 +0000 hourly 1 https://wordpress.org/?v=4.1.41 By: Hrachya H. https://gunlab.net/the-pedersen-device/#comment-5269 Wed, 05 Nov 2014 22:26:48 +0000 http://gunlab.net/?p=1465#comment-5269 Here is a nice video on Pedersen device (IMT with Jerry Miculek):

]]> By: juver https://gunlab.net/the-pedersen-device/#comment-4664 Mon, 27 Oct 2014 18:57:50 +0000 http://gunlab.net/?p=1465#comment-4664 where did you get a copy of the manual , i didn’t even know any existed or survived ?

]]> By: Chuck https://gunlab.net/the-pedersen-device/#comment-4575 Sun, 26 Oct 2014 15:09:35 +0000 http://gunlab.net/?p=1465#comment-4575 Thanks for the additional information. It added to my reference library on this project. I will post a copy of the manual in a few days

]]> By: Chuck https://gunlab.net/the-pedersen-device/#comment-4574 Sun, 26 Oct 2014 15:08:15 +0000 http://gunlab.net/?p=1465#comment-4574 I agree but for the time period and concept it was intended for it was good.

]]> By: Chuck https://gunlab.net/the-pedersen-device/#comment-4573 Sun, 26 Oct 2014 15:06:50 +0000 http://gunlab.net/?p=1465#comment-4573 Yes but you are getting that velocity from a rifle in the Pedersen device. I don’t think the device as design and built can handle the pressure.

]]> By: Chuck https://gunlab.net/the-pedersen-device/#comment-4572 Sun, 26 Oct 2014 15:05:04 +0000 http://gunlab.net/?p=1465#comment-4572 I have your book in my library and I will check it out. Thanks for the reminder. Chuck

]]> By: Chuck https://gunlab.net/the-pedersen-device/#comment-4571 Sun, 26 Oct 2014 15:04:16 +0000 http://gunlab.net/?p=1465#comment-4571 I would love to see that filmstrip. Thanks for the heads up on it and I will look for it. I have a video of it shooting that will answer your questions.

]]> By: Rod https://gunlab.net/the-pedersen-device/#comment-4550 Sun, 26 Oct 2014 03:51:30 +0000 http://gunlab.net/?p=1465#comment-4550 Is there some way of rotating the stub barrel of the device to align the rifling with the rifle barrel? If not, I would be inclined to leave the stub barrel smoothbored and allow the rifle barrel to do its thing. It seems to me that if the stub barrel and the rifle barrel were not perfectly aligned then there could be excessive distortion of the bullet as it transits from one lot of rifling to the other, resulting in impaired accuracy.

]]> By: juver https://gunlab.net/the-pedersen-device/#comment-4486 Sat, 25 Oct 2014 12:55:02 +0000 http://gunlab.net/?p=1465#comment-4486 Chuck

i have been facinatide for some time now by The Pedersen device and i must say that it is a remarkably simple device and there are enough pictures and drawings on the web to reverse engineer it

what i have figured out so far
-it’s a open bolt straight blowback mechanism (no fancy delayed blowback)
-it uses the firing pin as a ejector
-its locked in the receiver of the bolt action rifle by the bolt stop
-the big lump that sits on top of the device above the trigger of the rifle is what provides the mass for the open bolt straight blowback mechanism and is also the charging handle

but this is how it’s described in the patients , i have handled the real thing

this drawing has a nice cutaway http://www.sodcity.com/gallery2/view_photo.php?full=1&set_albumName=US-rifles%2C-Ammunition-Accessories&id=Pedersen

i have collected some pictures and highlight some text in the patient’s
which you can download here
https://copy.com/zsWEOAFl2NnToUUl

the drawings in the patient are to scale and help a lot

https://www.google.com/patents/US1355417
https://www.google.com/patents/US1355418
https://www.google.com/patents/US1355419
https://www.google.com/patents/US1355420
https://www.google.com/search?tbo=p&tbm=pts&hl=en&q=ininventor:%22Pedersen+John+D%22

]]> By: John D. https://gunlab.net/the-pedersen-device/#comment-4405 Fri, 24 Oct 2014 19:47:05 +0000 http://gunlab.net/?p=1465#comment-4405 A 1918 vintage, 35mm U.S. Army training filmstrip (not a movie, but a sequence of stills) I viewed a long time ago suggested that the Pederson Device magazine articulated as the bolt actuated. Sort of like a bird wing flapping. Any idea why the Pederson Device magazine would cycle between near vertical and about 45 degrees starboard? At the time I figured that it had to be an attempt to allow the rifle sights to be used, or some kind of mechanical delay on the bolt.

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