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Jeff Siewert

๐Ÿ‘ค Speaker
1310 total appearances

Appearances Over Time

Podcast Appearances

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

Do you?

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

Well, okay.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

Yeah.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

All right.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

So so the foster slugs are a bit of a I think the word I want to use is enigma.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

So they start off as this, you know, kind of hollow based dome shape that you see on the on the far left hand side where it says foster slug.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

And, you know, it's got a big cavity in the base.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

I know a federal uses what they call their true ball design where they put a little plastic ball underneath that thing to help it maintain shape during the launch.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

But, but basically the lead has such high density and such low yield strength that it

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

When it exits the tube, if it doesn't have that little true ball underneath it, it's going to come out like the picture in the middle.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

It looks like a dinner plate flying flat face on.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

And so as a result, that is quite high drag, which limits the range, which is one of the desirable features of it.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

But it also doesn't have anything for stability.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

It doesn't have gyro stability.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

It doesn't have static stability.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

The only reason that it is able to do what it does so well is it's, okay, in other words, as the bullet yaws, as it tilts relative to its velocity vector, it can't generate much energy.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

lift to swerve the thing off the flight line, okay?

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

And then, yeah, if you go look at Tau Flater Maus on YouTube, he's got a high-speed video of foster slugs, and they do rotate, but it's pretty slowly, okay?

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

So that helps from a dispersion standpoint, group size standpoint.

Firearms Radio Network (All Shows)
Reloading Podcast 565 โ€“ Jeff from Bulletology

But it's not enough spin to actually stabilize, okay?