Thanks.

This discussion points out the fact that there is a real dearth of good interior ballistics information available to the reloader. I am pretty sure that the powder and ammunition manufactures know a lot but it certainly is not in their best interest to share. This makes me want to put together my own test setup and get after it
C.G.B.

That’s what Sherman Bell did and dispelled many long held myths

Yes he did and, as far as I know, still does. I wish he lived next door, I would love to have access to some of his toys. Unfortunately in the 'information' world the guy that tells the first lie usually wins. Once a myth gets entrenched it is very hard to kill. Where I worked before I retired there was a saying above the door. Paraphrasing, it said "One properly conducted experiment is worth more than all the expert opinions in the world".
C.G.B.

One of these would be fun to play with...


https://www.youtube.com/watch?v=uP6Alb6V17U

I'll be dam he mention that shot column height came change pressure in the shell.

Think I'll sell my bowling equipment and go back to reloading.

Pretty sure Bell had Tom Armbrust do his actual pressure testing. Bell provided the loads and designed the procedures for the testing, and wrote the articles.

I've had Tom test loads for me over the years since the series of articles was published.

SRH

You may be right, I don't have the entire series, just a couple. In this one, however, he seems to have done the testing himself. He shows his test equipment and describes how he conducted the tests.

Of course it can change the pressure -- it could go up if the the column consists of lead -- you increase the height of the lead, you also increase the weight. It could also go down if, like in my example, you used rice instead of lead -- a load of rice could be twice as tall as a load of lead and the pressure will go down because the weight of the load of rice is less. But you said: "a taller or "longer" load column will increase pressure every time" -- it's the EVERY TIME that makes your statement wrong. A taller or longer load column doesn't increase pressure every time.

The nice thing about bowling is that you don't have to know how to read. It's a great sport that way.

"The nice thing about bowling is that you don't have to know how to read. It's a great sport that way.":rotf::rotf:

I take it you do alot bowling.


Yes , when using the same weight of different shot types . Everything else in the load being the same pressure will change . Sometimes alot. Doing that is a guessing game, a chance I'm not willing to take without test data .


Carry on with out me.

Mark