licensed reamer Screw'em. Look at the 300, it wasn't JDJones who made it popular, it was freely available reamers and finally a standardized round that gave us the availability wee see today. Nor do I believe he was the first to make such a round. Everything (or at least something very similar) has...

Every k will have to be strong, not just the blast baffle. Correct, in fact the last baffle will need to be the strongest as it gets the thrust of the entire stack. From a structural POW the classic K's are a terrible design, but it is of course possible to improve it. One way would be to make a X-...

Yeah, not much you can do with most stainless steels (except stuff like 17-4). But don't worry too much about it, some slight wear on sharp edges can appear quite fast. Most times it stops once the edges has been rounded a bit.

17-4 is a precipitation hardening steel, the HT of that is more comparable to a tempering process that shouldn't affect dimensions much. For normal steels you would have to austenitizise, quench and temper, and the quench can affect shape and dimensions. Especially if it's an asymmetrical shape or y...

I concur. It should help, although it won't be magic. Whether or not it's worth it depends on how much extra work it is for you.

I'm just not sure if it is super stringy or if it will work harden Haven't machined much 7xxx, but as it is stronger it should be less stringy than 6xxx. And work hardening shouldn't be a problem either, it can't get much harder than it already is. When machining aluminum (usually 6068T6) I prefer ...

making the "weapon" illegal when there's already a law against excessive force won't prevent the crime. I think you're missing the point. Imagine a person properly trained in unarmed combat. Equip him with something equivalent to a brass knuckle without any additional training. Now imagin...

doubloon wrote:The whole point of the Nielsen device is to disengage the weight of the can from the barrel at the moment recoil begins.

True, but it can only decouple the axial motion. Most guns have a tilting barrel, so the weight still has an effect.

Without changing the gas system your options are limited. First make sure everything moves with as little friction as possible. You might consider cutting the spring a bit, removing weights from the buffer should help some as well. A lightweight BCG is another possibility. But I would try loading wi...

Definitively the wrong gas system for subs. A bigger port might solve it, but the risk of bullet shaving increases. Besides, as you're already at tube ID it might help all that much. Plugging the original port and fitting a pistol length tube would probably be the best solution. Themonk: Using a car...

Sodium hydroxide will dissolve lead (and aluminum). It is however safe for steels.

Jeeez. I broke one of my rules this time and was promptly disappointed. Nothing wrong with the trick itself, but 3 minutes of talk and more talk to explain something that could be done with a single image?

This one should work:
http://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi

The BAR can be fitted with a silencer. At least they do that here in Norway, the distributor even claims it to be one of few semis that can be suppressed. The gas system must of course be adjusted, this voids the factory warranty for any faults that can be attributed to the gas setting.

Gas blowback is mostly a matter of adjustment. The best setup I've tried used a carbine spring in a rifle tube and adjusted to the absolute minimum. No gas and silky smooth cycling.

Capt. Link. wrote:A muzzle brake inside a suppressor has Zero effect on recoil reduction.Physics 101

Assuming the same level of suppression, sure.

A muzzle brake is in essence a reverse thrust device that redirects gas to cancel rearward movement of the rifle. Not quite. Yes, the most effective brakes strive to send gas backwards, but all you need to reduce recoil is to reduce the forward velocity of the gas. And this is exactly what a silenc...

Any decent can will reduce recoil, adding a front brake will probably not make much difference.

Historian: While slow speeds and small cuts reduce the need for cooling HSS does last longer when cooled. For carbide it's not as straightforward, many coatings are designed to work at high temperatures. I seldom use HSS for anything except drilling and boring very small holes, but I prefer to use c...

BinaryAndy: There is a huge difference between CNC with high quality tooling and the tooling and manual machines that most people here have access to. I use flood cooling quite often, if not for the finish then to avoid getting burned by hot chips. And while I don't have to justify the time spent I ...

While not absolutely required for some (even many) operations, cooling is beneficial. Especially when running heavy cuts. Ever tried hogging aluminum dry? It quickly turns into a mess of stringy chips and chip welding. Steel usually breaks fine dry, but the parts can heat up enough to mess up a prec...

Asymmetrical baffles can disturb the bullet, especially the fist one (blast baffle) where the pressure is highest. if you haven't done so already, try staggering the baffles so the notch is rotated 180 degrees. This might mitigate the effect. Making the first baffle symmetrical might also help.

HansohnBrothers wrote:As long as demand is high, prices will not go down.

That's not an unreasonable assumption, short term. All mfgs are set up to handle the current demand, if the tax & hassle disappears demand will increase while supply remains the same.

That IS fun

mr fixit wrote:Since it would be easily replaceable, it doesn't have to last forever.

Exactly. And considering the current marked this will probably take some time getting used to.

Here's one of the more successful local manufacturers: http://www.a-tec.no.