Al in Mi wrote:I had a couple of simular things happen with 296 back in my 454 Casull days. One of the guru's back then, suggested compression of the powder, a heavy seperate crimp and I've had no problems since with 296.
After reviewing MAD's Side Crimp pictures and now with Al's and the Doc's assertions. I'm thinking you really do not have enough crimp going on here.
In your pictures you show us a case that is .482" at the mouth, .476" is the std. and it looks like the side crimp is not deep enough. You might be right that the crimp is at the bottom of the bullet and that could part of the problem.
I am thinking that the problem here is all about the crimp and if true, 296/297 area powders are at our ragged edge for slowness in our burn rate, something I'd have never believed after all those years using 1680 in the Pro. Bottom line.. MR might be actually answering some very important data questions..
Can you supply us several side views of a pulled bullet, that has been side crimped?..