The "facts" as I have accepted them, from people who really know what they are talking about, as opposed to the CYA, old-wives'-tales parrots, is that the pressure peak with both smokeless and black powder occurs about 1 to 1-1/2" from the breech face. Very little difference between the two. The fact that the thickest part of the barrels on any gun, very old to very new, is at the chamber area. This pretty much validates the above, doncha think?
The often repeated idea that smokeless pressure peaks out by the forend, "right where yore fangers are", is utter nonsense.
P.S. I have Dupont's Pressure curve graph in my saved documents. I've never learned how to post pictures here but I'd be happy to attach it to an e-mail to anyone who's interested enough to send me an e-mail.
Click on my name, my profile and you'll see my direct e-mail address. Please don't waste your time with a PM.
Last edited by Jim Legg; 08/12/07 11:53 AM.
