quote:

Originally posted by jeffeosso:
the shell holder providing the headspace.. that's just clever as all get out.. make the chamber a bit long, and never worry about trimming more than usual...

pretty neat!

yep that was the idea

here it is with out the brake. man it swings nice and feels good. I made the thread protector out of titanium.

I knew what he was doing. Thats why I asked for photos knowing it would become obvious.

I have been wondering about this idea lately and do not know if it has been done before or cannot be done. I think Robgunbuilder may be one of the best to ask this question but I will just throw it out there. I do not have the equipment to build it so someone else would have to try.

If you had a muzzle brake drilled into the barrel or it could be a screw on brake and then made a larger solid screw on shell to cover it up so the blast and noise would be redirected forward. There would have to be a small space between the vents and the outer shell for the gas to flow out to exit the front. I was even thinking you could make both pieces screw on by using a choke wrench type tool to tighten them up. By using this method the end of the barrell would have 2 different sized threads so you could install the outer first then the inner muzzle brake that way the parts would be easier to create.

If this is possible and would help reduce recoil substantially then the rifle would be no more offensive than a regular barrel. It could also be made low enough not to interfere with a front sight. It would make a rather large bulge at the end tho....maybe call it a counterweight for balance or something. Anyway if it works someone would make a fortune from it. It may be that the design would negate any benefits from the brake and that is what I am wondering. I will always be curious to know either way so please shoot the idea down or let me know if it may have potential.

To add another thing to the above idea. What if the outer tube had fins machined inside its chamber that are angled slightly forward. These would add additional push forward and still propel gas and noise in the direction the gun was pointed. I'm thinking of something like threads in a nut but with intermitten gaps staggered to let gas escape forward. Of course the depth would have to be enough to offer resistance. It could even be welded together into one piece for strength and simplicity.

What you are talking about is basically putting the gas back into an enclosed space at a lower pressure...depending on just how much space you have between the barrel and the "can" and unless you had some way of channeling that gas toward the front by directed grooves, you wouldn't know for certain WHICH way the gas would go or if it would do nothing but blow that thing off the muzzle or back up the barrel and out the chamber...if you want the gasses and noise to go out the front, just leave the brake off.

You are basically defeating what the brake does, namely redirecting the gas and energy to the side.

But you never know for certain until YOU try it... ... I will wait for the results to be posted.

Luck

Yeah that's what I am wondering. It may offer so little benefit in recoil reduction that it would be useless. It would also be a bit labor intensive and therefore cost ineffective but I still keep thinking about it. You know the old build a better mousetrap thing.

You are having a lot of fun with that.
I wonder how fast some 300 grain aluminum bullets would fly out of that.

quote:

Originally posted by boom stick:
You are having a lot of fun with that.
I wonder how fast some 300 grain aluminum bullets would fly out of that.

o you read my mind. the other night i was thinking OMG i could turn some long 500gr aluminum bullets and get them zipping right along

Would be a cool deer stake bullet.
Make it a bore rider.
Maybe get some video of it hitting water jugs.
The short barrel might be good for high 3k velocity.

Aluminum bullets make a little Flash when they hit something solid.
Its all the kenetic energy being converted to thermal, and aluminum does burn to a small extent.

Cheers, John

The .729 Aluminum Darwins of about 300grs went over 4000fps out of my NEF. felt Recoil was obviously markedly reduced. I used the full size 12 GaFH case too with about 250 grs of Rl-22 as I remember. Yes they do emit a very visable flash when the hit stuff. I was actually very impressed with Aluminum bullets. No major barrel fouling and great accuracy at least to 100 yrds. Not much penetration, but cheap fun. There are pics of these on the 12 GaFH thread somewhere. I made some in .620 and .510 also and had very good results. Gerard once told me he made some in .30 caliber and had a similar experience.

On some guns, I just counter-bored the end of the barrel for 2 inches or so for a 0.30 clearance for the bullet and just drilled a bunch of holes in it with a indexing head. Usually six rows of six holes. Lots of small holes actually worked best. I then internally crowned the brake and it worked surprisingly well. Even did this on guns with front sights installed. If you look at the NEF shotgun I made on the 12 GaFH thread you will see what I'm talking about. -Rob

Get yourself a golf ball launcher for that baby, screw it onto the muzzle, and have some real fun.

What is it with the knife makers building super guns these days????
JT needs to go hang out with Bradshaw, God only knows what cannon they could put together.

Cheers, John

here is the video of mine that is getting passed around online.

http://youtu.be/kFYXTH7Gdhk

Wow! I enjoyed the read, thanks for sharing. That is impressive!

quote:

Originally posted by Phatman:
Aluminum bullets make a little Flash when they hit something solid.
Its all the kenetic energy being converted to thermal, and aluminum does burn to a small extent.

Cheers, John

I wonder how a MAGNESIUM bullet would react?

BTW, the 700 WTF just made The BLAZE, Glen Beck's website.

http://www.theblaze.com/storie...ing-rifle-in-action/