Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Hunting > Long Range Hunting & Shooting

Long Range Hunting & Shooting Nightforce Optics


Reply

Muzzle brakes that don't blow off

 
LinkBack Thread Tools Display Modes
  #15  
Old 04-17-2012, 10:19 PM
Platinum Member
 
Join Date: Mar 2005
Location: Utah
Posts: 1,377
Re: Muzzle brakes that don't blow off

Timing is next. The first photo is where the brake started. I view the brake and barrel as a clock face. The black line on the barrel is top dead center. The line is at 12:00. The brake is at 10:30. I divide one by the thread pitch. In this case, twenty eight threads per inch. This gives me .0357 per revolution. I divide this by twelve to get my clock face (.0029 per twelfth). I now multiply by 1.5 to get the brake to top dead center. I take .0044 off the barrel shoulder. In practice, I would take .003, test fit, and approach the final cut carefully. The brake has been timed in the second photo.
Attached Thumbnails - Click to View Larger
Muzzle brakes that don't blow off-timing1.jpg   Muzzle brakes that don't blow off-timing2.jpg  

Reply With Quote
  #16  
Old 04-17-2012, 10:25 PM
Gold Member
 
Join Date: Nov 2011
Location: Saratoga Springs, Ut
Posts: 512
Re: Muzzle brakes that don't blow off

I look forward to more of your posts like this one!
Reply With Quote
  #17  
Old 04-17-2012, 10:30 PM
Platinum Member
 
Join Date: Mar 2005
Location: Utah
Posts: 1,377
Re: Muzzle brakes that don't blow off

I check my dial in before cutting the crown. This crown has two steps. The main cut is eleven degrees. The second cut is a tiny forty five degree chamfer. All cuts are made from the center out to avoid pushing a burr into the bore. The tiny chamfer breaks the sharp edge so the crown doesn't wear quickly, and provides a very visible indication the crown is perfectly concentric to the bore.
Attached Thumbnails - Click to View Larger
Muzzle brakes that don't blow off-crown1.jpg   Muzzle brakes that don't blow off-crown2.jpg  

Reply With Quote
  #18  
Old 04-17-2012, 10:36 PM
Platinum Member
 
Join Date: Mar 2005
Location: Utah
Posts: 1,377
Re: Muzzle brakes that don't blow off

The brake is now bored to the correct size, and chamfered. I start with a centering drill, finish with a drill bit or chucking reamer. I cut the brake bore .020 over bullet diameter. Clearance and alignment is checked with the indicator rod.
Attached Thumbnails - Click to View Larger
Muzzle brakes that don't blow off-brakebore1.jpg   Muzzle brakes that don't blow off-brakebore2.jpg  

Muzzle brakes that don't blow off-brakebore3.jpg  
Reply With Quote
  #19  
Old 04-17-2012, 10:40 PM
Platinum Member
 
Join Date: Mar 2005
Location: Utah
Posts: 1,377
Re: Muzzle brakes that don't blow off

The brake is now chucked in the lathe, dialed in off a mandrel, and tapered to match the barrel.
Attached Thumbnails - Click to View Larger
Muzzle brakes that don't blow off-braketaper.jpg  
Reply With Quote
  #20  
Old 04-17-2012, 10:45 PM
Platinum Member
 
Join Date: Mar 2005
Location: Utah
Posts: 1,377
Re: Muzzle brakes that don't blow off

The threads of brake and barrel are cleaned. Anti seize is applied to the threads to prevent galling. Sorry, no red lock tite or JB weld. The brake is installed and torqued on.
Attached Thumbnails - Click to View Larger
Muzzle brakes that don't blow off-brakeinstall1.jpg   Muzzle brakes that don't blow off-install2.jpg  

Reply With Quote
  #21  
Old 04-17-2012, 10:52 PM
Platinum Member
 
Join Date: Mar 2005
Location: Utah
Posts: 1,377
Re: Muzzle brakes that don't blow off

The barrel and brake are now blended and polished to 320 grit. I use a barrel spinning jig and a belt sander.
Attached Thumbnails - Click to View Larger
Muzzle brakes that don't blow off-blend.jpg  
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Muzzle brakes that don't blow off
Thread Thread Starter Forum Replies Last Post
muzzle brakes skandlus Rifles, Bullets, Barrels & Ballistics 16 12-16-2009 07:23 AM
Muzzle Brakes fnsakdel Rifles, Bullets, Barrels & Ballistics 1 07-19-2009 10:22 PM
Muzzle brakes??? tadge Rifles, Bullets, Barrels & Ballistics 9 11-02-2007 09:16 PM
Muzzle brakes milanuk The Basics, Starting Out 11 02-05-2002 08:18 PM


All times are GMT -5. The time now is 03:20 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC