school me on brakes..

ultimate_monkey

ultimate_monkey

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so iv been looking into brakes for my 5r in 308, i have a very specific look in mind that i would like to acheive, so im probably goin to have to make somthing, its fairly simple and i can make it on a lathe and a mill/drill. i just need some basic info.

being .308, how much clearance should i have? i was thinking to make the hole .3125 as its commen (5/16") and bits are hella easy to find. or will the 4.5tho be incorrect clearance?

the part im not sure about... when i have my barrel turned down and threaded, whats the most comming O.D and thread pitch? im going to have to order an endmill bit, and tap, so id like to go with the "standard" thread pitch / size so i can run a different brake down the road if i choose too


thanks for the input
 
4.5 thou is way to tight. The norm is around 20 thou, so .010" all the way around. It is critical to ensure the brake is true and that it is mounted true to the bore. If your new to this I highly suggest you have it professionally done. The outcome of a misaligned brake would not be good.

If you are making your own brake do not open up the hole until it is on the rifle, trued up in the lathe. This will ensure that the hole is as close as possible to the rifle bore.

As far as threads are concerned there is no real standard. If you go to brownells website and look at the different brakes they sell you might find some sizes more common that others.


Dave

Oh ya, You have now been SCHOOLED!!!!
 
ultimate_monkey said:
school me on brakes..
Click to expand...

Unless your time means nothing, you can buy a brake better than you will make and for less money.

24 tpi is good, and a large diameter depending on the barrel diameter.

The brake is finished after it is installed on the barrel.
 
guntech said:
Unless your time means nothing, you can buy a brake better than you will make and for less money.

24 tpi is good, and a large diameter depending on the barrel diameter.

The brake is finished after it is installed on the barrel.
Click to expand...


Haha my time means alot! I just get a satisfaction from doing something heck anything! With my own hands even if it only works 1/2 as good as a professionally made product I see it as a learning experience! And I honestly love to learn about things I enjoy. I don't think any one can put a price on knolage and in the end it will cost me a bit of time and money but I will understand the process better.


Guntech, I highly value your opinion as iv only ever heard that your the 700 guru and are one of the best. If possible I'd love to pick your brain to do this at the very least safely. If you honestly think undertaking something like this is a bad idea then I won't do it. I just have a love of making things.


Thank you very much for your input!
 
This would probably be better in the gunsmithing forum...

Machining your brake is simple... the bore should be 20 thou over bullet diameter and the bore, the threads, and and the rear of the brake should be machined in one set up so they are perfectly true to one another... that's critical.
 
thank you Mr. Tech! thats the kind of info i was hoping to get!

your right, this probably would be better in the gunsmithing forum, im not sure why i put it here, minds been else where the last few days.
 
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