Powley calculator

[Aggie01]

This is neat - in 20 years of guns and internet, I have never run across this, so I thought I would link it for y'all.:

kwk.us/powley.html

I found this looking for some guideline on efficient expansion ratios to determine what rifle cartridges suffer more or less when launched out of short barrels.

Parent site is here:
kwk.us/
Some neat articles.

[ericp]

That is a nice update to the old cardstock ones. Neat link, thanks for sharing it!


Eric

P.S.
Here is a photo for those who are not familiar with them.

[contender]

I have,, or at least I had one of those in my stuff. I haven't seen it or looked for it in a long while. But it also reminds me of another "old" chart I'll dig out.