I use 316L. Stainless is kinda stringy when turning it....be cautious don't let it get a hold of you.

"Shift1" Nice machining and great look with the snake print. What baffles did you go with, same as the end cap - concave? Can you give us more details about your QD system? Pictures explanation? Gunny Gunny, baffles are a bit of a hybrid design. The core is basically a coaxial design usin...

Okay here are a couple of pics to prove existence will endeavor to do proof of function vid this weekend Pic of project http://img6.imageshack.us/img6/5426/nohb.jpg Pic of project on host left side http://img507.imageshack.us/img507/9540/jv7f.jpg Pic of project on host Right side http://img24.images...

Baffled wrote:Nice looking work, even though I missed the first part about what it is!
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Its a can for a shorter barreled .308 class weapon system. (16 1/2 barrel.) The earlier discussion was related to the muzzle pressures associated with these shorter barreled platforms.

All your doing here is making me want to get a mill..... All of the sudden, "just a lathe" doesn't seem good enough for me anymore. :lol: cool stuff. Oh it goes much farther than just the mill.....recesses were done with a super spacer :wink: Just like the lathe....the real money is in th...

Okay okay I know the rules of not holding out on pics for new projects. Earlier I posed the question about muzzle pressures on shorter barrels and that soon would be posting a proof of life vid. Well .... still do not have that vid. Have been playing with my toys and to be frank I have been working ...

mollinst wrote:We checked with the guys at JPL and DARPA last fall and, they said that this is, in fact, rocket science...

Bill

Along that line...I like to equate it to being an Astronaut...."f"n with the unknown.

Can the muzzle blast in a can be regarded as gas flow at any time ? Can Bernoulli's principle be applied to estimate the max pressure in the can from the muzzle pressure ? That's basically how I did it; I harbor no illusions that its exactly accurate, and I add a significant 'safety factor' when ap...

Fulmen wrote:It's obviously load dependent, but I ran a few through QuickLoad and 10-12'000psi seems like a very reasonable estimate at 16".

Thanks for that....

Okay so here is a silly question, but is does have some merit to the addiction we are all feeding. Anyone have an inkling about the muzzle pressure of a 16 inch .308? I believe the port pressure for an M14/M1A is designed at 12000 psi but the way it is designed, is to dump excess gases once the pist...

Okay so this question has more than likely been asked to death and I apologize if it has but....in regard to a registered SBR such as an AR-15, can a different caliber/barrel length be used on that registered lower? I suppose it would depend on how the form was filled out when approved.

Well said my friend....

pneumagger wrote:Wasn't that dude a member here a few years ago?

Yes you are correct...

Good to hear you are back up and running

Great info...

Does it come apart or did it take the bath in one piece?

Crash damage.....sucks. Bright side is that at least you know what's wrong and it isn't gonna cost your left giggle berry to fix.

Nicely made fixture....uniform attributes to all components makes for a predictable outcome.

What are the chances that there is an issue with the scroll...could have been damaged when machine crashed or an overzealous operator yankin' the lever in a panic trying to do a shut down. Thinking you should plan on a disassembly of the apron to inspect the parts. If you find nothing wrong, you can...

ChimeraPrecision wrote:could you shoot slugs and avoid this barrel porting?

Still uses a wad. After barrel wad separates ....do not want it staying in the can and screwing things up

That would be useful to for general milling. The way I am talking about would be when I need rotary indexing with the part mounted in the chuck....just like the stuff enfeild was doing with his. The main gear on the lathe right behind the chuck has indexing holes drilled in the side of it so the la...

Wondering which is the best way to make the 60 degree angle cut for the cone on K baffles? i'm fairly new to lathe work, just picked up one and have only had a limitted time on it so far, mostly just turning down aluminum tubing to get the hang of it. Would a countersink be ok? it's for a 22 form 1...

What type of equipment are you using? Are you using a 3 jaw or a 4 jaw chuck. Dialed in the stock yes? Tailstock is centered yes? Using center drill is a good thing...Were you using a large drill to open up the spacer section? what was your process? Care to post a drawing of your cone? Maybe we coul...

I sent in a form 1 for a .308 suppressor and got it back a few months ago. I designed the suppressor on solidworks and went to start machining cone baffels... I am an okay machinist, but my first cone baffel took me 14 hrs to turn on my uncles old lathe... It did not come within my specs. Does anyo...

Also if it is 6 inches shorter than approved, an addendum should be sent in to reflect the more correct physical dimension.