L1A1Rocker
03-14-2011, 02:25 AM
A while back I started on an internally suppressed 300 Fireball project. Most of the way through AAC and Remington came out with the 300 BLK leaving me in a bit of a quandry. . . I finished my project and then reamed the chamber to 300 BLK specs when a conversion reamer was available.
I was drawn over to this forum by 82airborn, on another forum, with the concept of a cast boolit specifically designed for the 300 Whisper/Fireball/BLK. I have since ordered, not only the NOE Whisper mold, but 3 of Miha's molds.
Someone recently posted their 300 BLK project and expressed interest in my project so I thought it may be worth reposting here. This is a 5 part project that took about a year to do. I'm posting as a copy of my original post that I did on another forum.
Here it is:
Disclaimer: Please do not start a silencer project without having your approved Form 1 in hand.
The project is actually finished but there are lots of pics so I'm breaking the post down. Here in this post I'll deal with cutting the barrel down and threading it.
So I received the Model 1 Sales kit and put it together to see how it would look.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0356.jpg
Not too shabby. I was impressed with how well M1S packaged and shipped the kit. I ordered it with the gas port in the pistol location.
I decided to follow the design I used with the Mauser project and have the tube come way back over the barrel stopping just an inch and a half shy of the barrel nut. My first step was to locate where I was going to have the rear end cap of the tube and thread the barrel for it.
These two pictures show how I turned down part of the barrel to where the threads would begin.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0358.jpg
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0361.jpg
Now with the thread relief cut.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0362.jpg
And the threads done.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0363.jpg
The threads are 13/16ths - the same as the barrel threads on a Ruger Mk-II Barrel/receiver.
The next step was to cut the barrel down to 10 inches. Some of you may be thinking that this is now a two stamp gun but no, it will not be. The overtube will extend 8 inches beyond the end of the barrel and blind pinned in place. Works like the extra long muzzle break used to make the AMD-65s legal.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0364.jpg
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0365.jpg
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0366.jpg
I then crowned it using a hand crowning tool from Brownells. I seem to use a lot of their stuff. . .
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0367.jpg
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0369.jpg
Humm, I'm limited to linking to 10 images. I'll have to finish this with Whisper 1A. . .
Link to 1A: http://castboolits.gunloads.com/showthread.php?t=109905
I was drawn over to this forum by 82airborn, on another forum, with the concept of a cast boolit specifically designed for the 300 Whisper/Fireball/BLK. I have since ordered, not only the NOE Whisper mold, but 3 of Miha's molds.
Someone recently posted their 300 BLK project and expressed interest in my project so I thought it may be worth reposting here. This is a 5 part project that took about a year to do. I'm posting as a copy of my original post that I did on another forum.
Here it is:
Disclaimer: Please do not start a silencer project without having your approved Form 1 in hand.
The project is actually finished but there are lots of pics so I'm breaking the post down. Here in this post I'll deal with cutting the barrel down and threading it.
So I received the Model 1 Sales kit and put it together to see how it would look.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0356.jpg
Not too shabby. I was impressed with how well M1S packaged and shipped the kit. I ordered it with the gas port in the pistol location.
I decided to follow the design I used with the Mauser project and have the tube come way back over the barrel stopping just an inch and a half shy of the barrel nut. My first step was to locate where I was going to have the rear end cap of the tube and thread the barrel for it.
These two pictures show how I turned down part of the barrel to where the threads would begin.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0358.jpg
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0361.jpg
Now with the thread relief cut.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0362.jpg
And the threads done.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0363.jpg
The threads are 13/16ths - the same as the barrel threads on a Ruger Mk-II Barrel/receiver.
The next step was to cut the barrel down to 10 inches. Some of you may be thinking that this is now a two stamp gun but no, it will not be. The overtube will extend 8 inches beyond the end of the barrel and blind pinned in place. Works like the extra long muzzle break used to make the AMD-65s legal.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0364.jpg
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0365.jpg
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0366.jpg
I then crowned it using a hand crowning tool from Brownells. I seem to use a lot of their stuff. . .
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0367.jpg
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0369.jpg
Humm, I'm limited to linking to 10 images. I'll have to finish this with Whisper 1A. . .
Link to 1A: http://castboolits.gunloads.com/showthread.php?t=109905