.44-77 and paper patch?

[Distant Thunder]

Arnie,

Thank you for linking to those two chamber casts that Kurt posted. Those two side by side show exactly what the difference is when a shallow taper comes from the outside of the case mouth or when there is a 45* chamber stop.

I understand the problems with the 45*, but it does work and for me it has worked well. I confess that I don't understand how the long, shallow angle coming from the OUTSIDE of the case mouth works. It just seems there is a large area of empty space right in front of the case. Someone help me understand this?