porting rifled barrel question

22lr

22lr

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I am thinking about porting M14 barrel (308) rather than threading and buying muzzle break. I have never done it though. How effective portnig may be or can it be as effective in recoil reduction as muzzle break of a good design? And how is it done? I am thinking - should I bore out last 2" or so and if yes than to what diameter? Assuming it is 308 barrel. Or should I live that portion rifled and just drill some holes. Holes - how big where and if there is any sence in drilling them at the angle in hope to deflect gases backward a little more? I also asked same question on main battle rifles forum. Thanx in advance
 
It's easy to do. A Black and Decker drill and a few bits, 3/16" and 1/4 " in your favourite pattern and counter sink with a 3/8". :D

It's called how to bubba a rifle...
 
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ok. Now about chromed barrel - I understand I will have to plug resulting muzzle with bullet and make final cut for chrome not to flake? That is something I heard from "unreliable source". Tell me its ok and I will roll up my sleeves right now.
 
22lr said:
ok. Now about chromed barrel - I understand I will have to plug resulting muzzle with bullet and make final cut for chrome not to flake? That is something I heard from "unreliable source". Tell me its ok and I will roll up my sleeves right now.
Click to expand...

I think it is not a good thing to try. It is very doubtful the result will be good in any aspect. Try doing it on a scrap piece of barrel and see...

"Bubba ing" a rifle is not a compliment.
 
You might be able to port the barrel without ruining it if you have access to an EDM machine. MagnaPort is the commercial process. Whether it works with a chromed bore, I do not know. If you shorten the barrel to the legal minimum, and then ruin it, you will need a new barrel.
Cutting, threading, crowning and installing a brake works.
For brake information, get the book about making brakes by Newlon.
 
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