Jeff Siewert

There's no one-size-fits-all answer to that question.

Questions here?

No, sir.

Okay, we'll move on.

All right.

Why do some powders shoot smaller groups than other powders in my rifle?

This is a little bullet barrel powder interaction study that I did, kind of, you know,

I had been yakking at the guys at Hornady a little bit, and they said, oh, yeah, powder, changing the powder, changing the dispersion.

And I was, you know, for a very long time, I was of the camp that, you know, powder is just a push.

How can it affect the dispersion?

And so I started looking into it.

We have a...

what's called an inbore balloting code.

It looks at the dynamic interaction between a flexible projectile and a flexible gun tube, okay?

And so you can put in different propellants

and look at what the dynamic response is for a given powder in a given barrel with a given bullet.

So that's what I did here.

So I looked at H4350, W760, H100V,

and Varget, okay?

And each of these had a slightly different average muzzle velocity, and the muzzle velocity variation that you see is unique for each propellant.