Jeff Siewert
๐ค SpeakerAppearances Over Time
Podcast Appearances
And for whatever reason, they could not get that bullet to group.
And so we looked at the dimensions of the barrel.
Turned out that the lands were a little on the large side.
The grooves were really on the large side.
But that turned out wasn't the issue.
There was some issue with, let's just say, roughness in the forcing cone of the barrel.
And that turned out to be what caused them grief with the plated bullet.
They swapped the barrel out.
Problem went away.
So I don't think we need to cover any more here unless people have specific questions.
No.
Okay, we will move on.
Okay, rifle bullets and ballistic coefficient.
So here I've got three different .30 cal bullets, 170 grain flat point, 178 grain ELDX, and a 220 grain ELDX, okay?
Okay.
And I've got, you know, kind of some recommended usage ranges listed along with the twist rates that are required for gyro stability.
And then a comparison of the ballistic, G1 ballistic coefficient.
So for the flat point, it's 0.189.
For the 178-grain ELDX, it's 0.552.
And for the 220-grain, it's 0.65.