44 mag roll crimping?

[DoubleA]

I have been reloading the 44 for a few months now, and I have heard people mention "heavy roll crimping" a few times.  What is roll crimping?  I use RCBS carbide dies, and I have had descent accuracy, but I am always up for new things, especially if it improves my accuracy for my 44's.

[newfalguy101]

The short and easy answer is that "roll-crimping" is what your RCBS dies do when the seating dies is set properly.

All it means is that the case mouth is rolled into the crimp groove on the bullet.

The degree of crimp is where the terms "light" or "heavy" crimp come into play, the more the crimp the heavier the crimp.

Does that make sense???


As a general rule, the hotter the load the heavier the crimp, this is to allow a more even  and complete powder burn.


In my plinking rounds, 8 to 9 Gr of unique and a lead semi-wadcutter, roughly 800 FPS, I don't use any crimp.

in the heavy hunting load, 24 grains of 296, hardcast 240 semi-wadcutter MAX LOAD, I use a heavy crimp.

[Jim n Iowa]

I have been loading the 44 for some time now using jhp with and with out a cannular. I have started to load various hard cast bullets now and It has been recommended to roll crimp them. I bought a Redding profile die for this, rather than re-adjust my seating die to crimp, works fine.
Jim

[Hcliff]

I have been using the Dillion die for crimping and it works great and it is easy to clean (Cast bullets leave lube behind)  Roll crimping is what you use in a 44 mag because it head spaces on the rim.  The RCBS dies have a rol crimp built into it.  Crimping is best done in a seperate operation for the best accuracy

Hcliff