Roll Crimp vs Fold Crimp

[Keith Doty]

Beware! Paper hulls may be addictive.

[Mike of the Mountain]

Some paper hulls definitely load better than others. I find Federal Gold Medal and Fiocchi paper to load the best whether they are fold crimped or rolled.

[6pt-Sika]

I’ve only roll crimped 8 and 10 gauge . And all that were rolled were for buckshot , balls or slugs . I find it a bit time consuming but then again I find single stage presses time consuming . Sorry the only pics of rolled in my phone are 10 gauge balls and slugs .

[edgarspencer]

Originally Posted by Clark McCombe

It’s just one of those things…The next step will be paper hulls

They're almost too pretty to shoot

Originally Posted by Keith Doty

Beware! Paper hulls may be addictive.

No argument there, Keith

Originally Posted by Mike Koneski

Some paper hulls definitely load better than others.

Buzackly! Cheddite 12 and 16 paper roll perfectly, but the yellow paper 20s don't. They looked like a kindergarten art project.

Many years ago, I had Tom Armbrust test my 12 and 16 roll crimp loads and from several recipes i had for plastic star crimped loads. What I found was interesting, in that they resulted in approximately 500psi lower pressures, irrespective of recipe or gauge. A 6700psi 12gauge load came back at roughly 6200psi, and a 6000psi 16gauge load came back at 5550psi.

Something someone told me, or maybe I read, was that is was important to keep the depth of the rolled edge the same as it's width. Excessively deep rolled edges can produce Higher pressures.