Square Bores?

[redleg11b]

Saw something on Liberty Suppressor's site about having a square bore. Anybody else doing this or are most companies still doing R&D on it? I'm assuming the benefit is retarding gas flow more, but does it also have the same effect as having a can overbored for the caliber and slightly increase noise? Or is that problem corrected for with a correct caliber end cap? Just heard of this today after being offline for a while. Thanks for info.

[Capt. Link.]

The square bore is just the shape of the baffle design and they are trying to use it as a marketing tool and yes in theory the square edges allow gas blow by.Ask your grandpa about( blue coal )another marketing ploy.

[JasonAAC]

Anybody else doing this or are most companies still doing R&D on it?

I can speak that we're not doing R&D on it and i doubt anyone else is.

While there are an infinite number of subtleties to baffle designs, one thing is pretty clear- the tighter the bore around the bullet, the better the reduction. Making a square bore for a round projectile simply lets more gas pass along with it- like shooting a 9mm through a 45 silencer.

If we could build a 5.56 can with a .225 bore and still avoid strikes, that would be awesome.

[Lindenwood]

Yeah, a square of a given minimum radius will have greater area (and thus greater gas blowby) than a circle with a given minimum radius.

Plus creating square bore holes sound expensive!

[roberbr22]

How much larger do you typically bore over the size of the bullet?

[smcharchan]

How much larger do you typically bore over the size of the bullet?

Use the search function to check out the silencersmithing section. There is a ton of great information available, including caliber-specific guidance.

[redleg11b]

So my first inclination was correct then Thanks for confirming.

[kbuck20]

Uh oh, not to sure its just a marketing tool. Check it out

http://www.youtube.com/watch?v=e881i3yP ... Va9-acZa8w

[silencertalk]

I won't do it because cracks will more easily form in the corners than they would on a round hole.

[Mageever]

I won't do it because cracks will more easily form in the corners than they would on a round hole.

Good call Robert. Greeno did that hexagonal bore hole on the endcap for tightening and removal of his 5.56 can. When I heard it was the whole bore I pointed this out to him as well. I don't think he quite got it.